TWI249570B - Cerium-based abrasive containing fluorine and method of producing the same - Google Patents

Abstract

The disclosed is a cerium-based abrasive, which contains fluorine and has a 90 wt% or more mass ratio of a reduced mass of a total rare earth oxide (TREO) to an abrasive mass, a 0.05 wt% or less mass ratio of a total content of Th and U to the TREO ((Th+U)/TREO), and an average particle size according to Blaine's method (DB) of 1.5 mum to 2.5 mum. The cerium-based abrasive in which the particle size had been set based on the average particle size according to Blaine's method (DB) has been controlled in terms of particle size distribution of the abrasive particles so that necessary abrasion rate can be secured. Therefore, application of the average particle size according to Blaine's method (DB) to standards for setting particle size decreases content of elements such as thorium and uranium and provides a cerium-based abrasive having a higher abrasion rate.

Description

V. EMBODIMENT OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a fluorinated lanthanum-based abrasive material and a manufacturer thereof. [Prior Art] Manufactured as a decorative material fluorocarbon 钸The ore concentrate is used as a raw material to carry out ^ k (> Japanese Patent Laid-Open No. 2 0 〇 3 - 2 1 3 2 5 0). The manufacturing method is the wet pulverization of the fluorocarbon antimony ore, and the obtained slurry is dried, calcined and allowed to cool, and the obtained calcined product is pulverized and not graded. In such a manufacturing method, the baking temperature of the baking process is set to a relatively low temperature in a state in which the polishing material having high polishing precision such as polishing scratches is not easily generated, and the material of the higher grinding speed is produced. , state y, the calcination temperature is set at a relatively high temperature. However, the bastnasite concentrate contains an appropriate amount of fluorine and the like, and has good characteristics as a raw material of the abrasive material, but on the other hand, it has a known ruthenium (Th) or uranium (u) and fluorocarbon ruthenium. The ratio of the total rare earth oxide equivalent amount (TREO) of the concentrate to (Th + u)/TRE〇 is a characteristic of about 〇丨^%. Because of this, it is intended to provide a method of reducing the amount of uranium containing "2" abrasive material. In addition, the Hai manufacturing method refers to! In the case of a rare earth ore such as a fluorocarbon ore concentrate, it is found that the light rare earth carbonate is reduced by the radioactive element or the alkali gold content of the earth or the shaft. Gas's partial fluorination for this, for the background technology of the winners

2169-64l4-PF(N2); Ahddub.ptd

Page 11 1249570 V. Description of invention (2) Journal No. 9-183966). Block: When H is used in the latter method, it is obtained by reducing the toe or the content of 1 by the abrasive material. However, in the latter method, even if the vertical firing temperature is made at a relatively high temperature, $σ cannot be manufactured, for example, by the abrasive material of the former speed, and the abrasive material of the grinding speed is high. The subject of the 聿 ΓΓ 提供 提供 提供 提供 提供 之 之 之 之 之 之 之 之 之 之 之 之 课题 课题 课题 课题 课题 课题 课题 课题 课题 课题 课题 课题 课题 课题 。 。 。 。 。 。 。 。 。 The present invention is directed to solving such a problem, and is characterized in that the material is characterized by a total rare earth oxide conversion mass = grinding = TRE0) mass ratio with respect to the mass of the abrasive material. The total content of the load (8) is equal to the total = two: upper, and the ratio of the ratio of (B) is (〇 + U / TRE0) to 〇 · 05wt%, and the average particle size (4) is 15 (four) ~ 2.5 (four) . His Majesty Brian Faping

Check it out. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> The material is suitable for example for liquid crystals. The one-time grinding of the money board is more expensive or the first cover is made of glass. The reason for preventing the decrease in the polishing rate is not that the basis of the particle size setting of the abrasive material is considered to be 2N-6169-6414-PF(N2); Ahddub.ptd page 12 m 1249570 ' ---- V. Description of the invention (3) The average particle size (DB). In the production of the lanthanum-based abrasive material, for example, the grain of the abrasive material produced by the use of the abrasive material such as "finishing" is set. Then, in the particle size setting, the particle diameter (Dm) of the particles having a cumulative volume on the small particle diameter side measured by the laser diffraction/scattering platelet distribution measurement method was 5 〇wt%. However, in the state in which the content of bismuth or uranium is reduced and a high polishing rate is produced, even if the particle size is set using the granules (% 〇), most of the materials are manufactured. It becomes a state of low grinding speed. Because of this, even if the particle size is set using the conventional particle diameter (Dm) on the basis of the standard, the particle size distribution of the polishing material particles cannot be controlled, and the necessary polishing rate can be ensured. Therefore, even if it is performed so far With the particle size setting, it is also impossible to produce a particle size distribution with the grinding speed performance of the above-mentioned required level [the use of the Bryan method for granules in the particle size setting;; ΐ ΐ: the abrasive material has the aforementioned required level or this degree setting The abrasive material is the material that controls the abrasive material. That is to say, it is considered that the particle size setting is the standard: the abrasive material diameter (db) of the f ί degree and the average: the soap becomes the Brian method average granulation material system has the : 研 research state of the invention before the invention. The speed state of the particles of the dry grinding speed performance is 3;::: the state of the state of the special requirements, etc. The high range of the high grinding (4) is positive: the average particle size of the Brian method of the two f-materials is JU Π1 It becomes 15 #m~2. m 2169-6414-PF(N2); Ahddub.ptd No. 3 page 1249570 V. Description of the invention (4) Because of the average particle diameter (D), the speed of Ge. In addition, the lower limit of t cannot ensure sufficient grinding to cause large scratches or bending. When the value is 'on the surface to be polished, it cannot be removed. Therefore, in the test; ί, even if it is finishing the grinding 'the average particle size (Db) of the method becomes broad 7: the two sides are more ideally the total content of the blister relative to the fine t j &quot;m~2.3#m . In addition, tantalum and uranium are used in the TRE〇 of the tantalum-based abrasive material ((Th + U)/TRE0) to become 〇5wt〇/Beri ratio of ^1 is more preferably 0. 0005wt% or less °, the best is 〇 005wt% or less, the content is best to try ^. under. The so-called radioactive material of the shaft or sputum. The mass ratio of the mass of the abrasive material is 90 (4). The ratio of the additive phase β i : G / , ° brother, TRE 系 is preferably 90% by weight or more, more preferably more than 93% by weight. Because in each ancient case, the quality of TRE〇 is higher than that of the more honed material “: it is the most beneficial to the oxidized enamel of the grinding. , the proportion of the mountain jin, which can ensure the high grinding speed of '2 ^ m, is the content of the impure substance that becomes a cause of the scar, and it is more sure to prevent the occurrence of the scar. However, the review is carried out. The proportion of tre〇 (Ce〇2/T_ is preferably 5〇wt%~7..::=二容W, the wound is more than the above two: low, the grinding speed is lower, In the front of:: The ratio of the paving becomes more and more sufficient to maintain the grinding speed. When the 纟 is lower than the lower limit, the content of the fluorine (F) cannot be determined to be 4 〇wt%~1〇wt%. In the case of fluorine 5, the description of the invention (5), when the content rate is too low, 'there is a sufficient polishing rate cannot be ensured. In the case of =, the polishing scratches occur when the content is too high. Then, On both sides of these, it is more desirable that the content of fluorine is 5. Owt% 〜9· Owt% 〇 In addition, fluorocarbon antimony concentrate In addition to the radioactive materials of uranium or thorium, the ore system used as the material of the lanthanide abrasive material also contains: calcium (Ca), barium (Ba), iron (Fe) and phosphorus (P). Therefore, 呤 manufactures a #-based abrasive material containing many impurities composed of these elements. Most of the abrasive materials containing such impurities are likely to cause abrasive traces and become low polishing speeds. Moreover, in these impurities ( In particular, "When grinding the surface, the electrical or magnetic properties of the member to be polished are lowered. Therefore, it is preferable that the material used as the paving abrasive is the mass ratio of the dance, the 钡 and the % of the material to the TRE ( ( (Ca + Ba + Fe + P) / TRE0) becomes 2. 〇wt% to 1. Owt% . τ ^ ^ t ^ 5wt% ^ τ 〇-- The raw material, also preferably the quality of the gold GP 疋The following is even more preferably 0.5% by weight. Next, it is preferable that the lanthanum-based abrasive material is 1.0 mVg to 3.5 mVg. Since the RFT and the "μ | T method have a specific surface area, the grinding speed is lowered. When the /, ft E+T method has a larger specific surface area, the grinding speed is increased. To ensure that it is sufficiently small, it is easier to produce peaks and complexes. Because the BET specific surface area becomes more and more high-precision grinding is required. 4:: domain ===* 1249570 V. Invention description (6) ί i°. 2!νΛί Φ a ^ -ΒΕΤ ^ ^ ^ ^ Up to now, the ancient and the syllabus are less described, but then, the ti invention is invented for the purpose of the description. j吏 using fluorocarbon shovel : Department:: The manufacturing method of materials and the ore raw materials such as concentrates and concentrates, rare earths such as China's complex mineral carbonates: the content of im is obtained from the thin material. 〇Specially used as the raw material of the 研磨-based abrasive material, the manufacturer of the grinding material> go 'fit with the need before the simmering process, =

Drying &quot;chemical process or removal of impurities. ^Special wet treatment' or after the cooking process, process, drying process, classification process, etc. In the case of the fine-grained material, the method of producing the decorative material of the ruthenium-based ruthenium-based process is used, and the fluorine-containing rare earth compound obtained by the calcination is contained in the raw material supplied to the calcination process. The proportion of the oxide-converted mass of the fluorine-containing rare earth compound which is contained in the total rare earth oxygen/substance conversion mass of the raw material is 30% by weight or more, and the total content of cerium (Th) and uranium (u) is relative to the total rare earth. When the mass ratio of the oxide-based conversion amount ((Th + U)/TRE0) is 0.05% by weight or less, the production is equal to or higher than that of the lanthanide-based abrasive material produced by using the fluorocarbon sulphide concentrate as a raw material. Known as the lanthanide abrasive material for the grinding speed of the abrasive material. In the case of using such a raw material, the reason for the goodness is not necessarily clear, but it is considered to be deeply related to the inclusion of the raw material in the raw material, which is obtained by the calcination. Page 16 1249570 V. Inventive Note (7) One or two compounds. The gas-containing rare earth compound in the raw material is produced at the stage of cultivation. In other words, the material composition of the product was subjected to two or more rare earth-based abrasive materials in two or more stages. Then, the production is carried out until it becomes a sputum-like sample containing fluorine; ί 犬 。 。 。 。 。 。 = = = = = = = = 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 糸 粒子 粒子 粒子 粒子 粒子 粒子 粒子I Wα -人^烧者日才, 钸 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨The ^^ value (grinding speed) produced by the plurality of firing processes is delayed. 70 枉 枉 枉 w 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 作为 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟 含氟) for the sake of it. Therefore, the ideal is 7 〇 wt% or more. 〇 ^ 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好 最好After that, for the mixture obtained (Sparse page 17

2169-6414-PF(N2); Ahddub.ptd 1249570 V. Inventive Note (8) A mixture of compounds) is obtained by calcination. The calcination temperature of the fluorine-containing rare earth compound is preferably 3 〇〇〇 c 11 11 ° C, more preferably 40 (TC 〜 l 〇〇 (rC. used in baking at a temperature below the full temperature) When the obtained fluorine-containing rare earth compound is used as the original, it is easy to produce a lanthanum-based abrasive having a low polishing rate. On the other hand, the fluorine-containing rare earth compound obtained by calcination at a baking temperature exceeding the upper limit is It is easy to be a large-sized and hard-wearing material, and it is easy to manufacture the bismuth-based abrasive which is likely to cause scratches by using the above-mentioned four. ^Two strontium is a fluorine-containing rare earth compound obtained by culturing It can be obtained by the method of 1 m / kind. As an example, it can be exemplified by the manufacture of the material containing the 钸糸 、, the grading of the 在 制 after the (4) process, and the addition of the granules to the granules. Later, in the grading process to recover

In addition to the 3:: fluorine-containing rare earth compound, the carbonate, oxalic acid: dilute: carbon: salt, monooxycarbonate, salt-based rare earths: substances: special rare earth compounds or It is for those who are even in the line 1 (or fake burn). The rare earth compound listed in the strong heat and the smoldering is preferably 1 〇 to 5% or less, preferably 15 lin % or less, and the rare earth liquefied or sputum is long at high temperature. The time-calcined compound system is particularly preferably eight, and it is easy to obtain a portion other than the particle size large difluoro rare earth compound after the strong heat loss is almost 0% by weight. Because of the most, in the former Jinshi abrasive materials. Manufacture method of abrasive material for the invention, 2169-6414-PF(N2); Ahddub.ptd page 18 1249570 V. Invention description (9) ' --- $ 1 Reduce the content of bismuth or uranium The method in which the raw material (intermediate raw material) is supplied to the roasting garment is considered in various methods. For example, if the content of radioactive halogen or the like is reduced as a starting material, the raw material (intermediate raw material) having a low content of ruthenium or uranium or the like can be supplied to the baking process. The raw material is preferably a mass ratio ((Th + U) / TqRE 〇) of the total amount of lanthanum (Th) and uranium (u) to the total amount of the rare earth oxide of the raw material of 〇.05 wt% or less. More preferably, 〇〇〇5wt% is:,, or even preferably 〇·〇〇〇5wt% or less. When such a raw material is used, the total content of (Th) and the axis (u) is changed with respect to the total rare earth oxide, and the mass ratio ((Th + u) / TRE 〇) is equal. Or a cerium-based abrasive material which is higher than the polishing rate of the cerium-based abrasive material, such as a cerium-based abrasive material manufactured by using a mineral concentrate as a raw material. In addition, a method of reducing the enthalpy of the ruthenium or the like by using a radioactive element such as ruthenium or ruthenium or the like is a conventional method described in the chemical treatment of Patent Document 2. In the case of exemplifying one specific example, for example, by using a sulfuric acid decomposition method or an alkali decomposition method to decompose the concentrate of the fluorocarbon antimony ore, '-, etc., to separate or dissolve separately, etc., ^To remove impurities such as uranium, thorium, calcium, barium, iron, phosphorus, etc., to obtain rare earths:: liquid, 1 f: the rare earth component of the rare earth solution obtained by Zhou, and the composition of the rare earth solution Precipitant (such as hydrogencarbonate, &amp; reverse naphthyl hydrogenate, sodium carbonate, ammonia, oxalic acid, ammonium oxalate, oxalic acid urea) to form rare earth compounds (such as carbonate, base = ruminant salt: single The oxidized carbonate, hydroxide, oxalate, etc.) is filtered and washed with water to obtain the lanthanide abrasive of the present invention.

2169-6414-PF(N2); Ahddub.ptd Page 19 1249570 V. INSTRUCTIONS (10) ___ Method of raw materials for materials. In addition, the oxide of the sham-burning or the county shovel 4 is burned by these (by the raw material, such as the intermediate of the ^^/interstitial, the 壬 containing the method) The content of impurities such as low calcium, barium, iron, phosphorus, etc. 胄: can also be reduced at the same time, as described above, in the particle size determined by the degree of distribution measurement method 2 _ ray diffraction. 'In the case of the evaluation of the so-called flaw evaluation 5° or the grinding = the characteristics of the broken grinding characteristics and the polishing relationship of the grain of the abrasive material (grinding speed), the phase between the various physical properties of the second and fourth

The particle size (DB) becomes the two of the established range = the average value of the 'Brian's method of grinding (grinding speed)', and the tyL material is evaluated in the flaw or sample. Therefore, the manufacture of the lanthanum abrasive material: 2: f: sex. Since the average particle size of the Ryan method Q) 丨#, &quot; and δ is determined to be the basis of the invention of the abrasive material of the invention, the average particle diameter becomes the particle of the above-mentioned range. The grinding speed t is then followed by a plurality of baking reviews. As a result, it was found that the temperature of the calcination process in the firing process was the most = two = and was higher than the dry circumference of the raw material.

The calcination temperature of the calcination is above 101 degrees. When the ruthenium compound is formed, when the simmering temperature becomes low, the particle size is not changed at the same time, and the polishing speed is changed to φ = = = = = = = = = = = = = = = = = = = = = = = = = On the other hand, since the calcination temperature becomes higher 2169-6414-PF(N2); Ahddub. ptd第20页

II 1249570 V. INSTRUCTIONS (11) k 'There will be a tendency to produce the final grinding/abrasion scar, in the super; the second diameter, the large diameter is also prone to become too large, and at the same time, produce a ° When the upper limit is exceeded, the grain considers these aspects, 2 2: the cause of grinding scratches. Therefore, 11 5 〇 t. The calcination temperature of the inner core is 950 t~ In addition, the rare earth of the gas contained in the production method = temperature and the temperature difference in the raw material become smaller and smaller. It is easy to become low-polishing between firing temperatures: the particle size becomes smaller, and it is expected that it is more than 20 tons, or even the most: = the temperature difference is more reasonable: in addition, in the state of using a gasification treatment method Next, even if the + is made of m + system: the content of 钲 、 研 研 研 研 研 研 研 钲 , , , , , , , , & & & & & & & & & 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿 矿The finishing material is ground with a grinding speed and a grinding speed of the material. 10 S knows that the manufacturing method of the nm1-based abrasive material M ^ is in the raw material of the 钸糸 abrasive material, and the temperature is ίν=2 5 5 steps and has the number of times after the fluorination treatment process = after the firing process 2 times or more 'The total amount of 焙 (Th) and uranium (U) of the baked object (intermediate raw material) supplied to the first sinter 2 is the mass ratio of the total amount of lanthanum to the total rare earth oxide - ((Th+U)/TRE0) becomes 〇·〇5wt% or less. Page 21

2169-6414-PF(N2); Ahddub.ptd 1249570 V. Description of invention (12) ___ In the review, it was learned that only the abrasive materials that could not be obtained more than 2 times were required; #王' is also the original two of the abrasive materials containing the gas, and the process of containing each two: ;; therefore, it is thought that the second bismuth has a fluorination treatment process before the roasting process, and the second enamel method is treated. It is carried out before the first roasting process.: The chaos is _: After the mouth is just (four), the additional fluorination treatment is carried out between the recipes of the simmering process. Next, two twenty-two

= ; = = with;: ί;: = = make: 习 研磨 研磨 研磨 研磨 : :: :::: 磨 速度 速度 研磨 研磨 研磨 。 。 。 。 。 。 。 。 。 。 。 。 。 : A calcined product having a large particle size is appropriately produced by simmering, and it is used for the purpose of making a polishing material having a higher polishing rate. Easy, ~: 乍 is confirmed as a raw material system 'But, using rare earth carbonate趟' = , salt-based carbonates, oxalates, hydroxides, etc.: dilute compounds or rare earths for these rare earths, etc., even if it is in these.

2 L: The strong heat loss obtained by the rare earth compound from the under-fired/] is taken as or. In the case of ▲, it is preferably 15% by weight or less, more preferably i〇wt% or less, and the rare earth compound obtained by (2) has a large particle size of the grinding system. :&quot;Chemical. Since it is easy to obtain the fluorination treatment, it can be made by mixing the raw materials of the decorative materials (including

1249570 5. Inventive Note (13) Intermediate raw material) and fluorine-containing compound. It is a rare earth compound containing &quot; or rare earth fluorine X ^ X Λ 3 containing "hydrofluoric acid, ammonium fluoride, ammonium hydrogen fluoride, etc.", and the use of a compound, a rare earth oxidized fluoride, and the like. Bo,

The rare earth-containing compound does not need to be obtained by calcination, and the rare earth compound such as rare earth carbonate or the like can be obtained by mixing the compounds. This is because the raw material which is subjected to the fluorination treatment by containing f: such as = t is burned twice to produce a right rate 2: Li: ί is manufactured using the present manufacturing method to reduce the content of defects or pins. The method of grinding the material is to consider various methods. For example, if the content of the radioactive element such as ruthenium or uranium is used as the starting material for the four methods, it is possible to produce a reduction of yttrium or uranium, etc. (the order of ThKLt as a raw material system is also as described above). In the case of (5), it is preferable that the mass ratio of the total content of ':, (u) to the total rare earth oxide equivalent amount of the raw material ((Th+u)/TRE0) becomes 0, 0. 0β0 0 05 ^ f ί f ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί =, review, the results, starting with the first roasting process: the firing temperature of the process is preferably 70 (rc or more, the final calcination temperature of the roasting process is preferably 9 〇 (rc ~ 12 〇 〇t, after the second and subsequent: ^ io clothing private baking temperature is preferably higher than the firing temperature of the roasting process of each of the roasting processes 丨〇〇 c above the temperature. 2169-6414-

PF(N2); Ahddub.r 1249570 V. Inventive Note (14) ~ Since the calcination temperature of each firing process is less than 70 ° C, there is almost no effect of growing particles by roasting. The reason is that an abrasive material having a grinding speed of = is produced. Then, even if the calcination temperature of each of the calcination processes is 70 kt or more, and the calcination temperature of the final calcination process becomes low, there is a tendency that the particle diameter of the finally obtained abrasive material does not become large and the polishing rate becomes low. ±, less than 9〇〇. . At the same time, the particle size is not increased, and the polishing rate is not sufficiently increased. On the other hand, when the calcination temperature of the final calcination process becomes high, there is a tendency that the particle size of the second abrasive material becomes large and the scratch is likely to occur, and the particle size is more than 1 20 0 °C. It has become too big, and at the same time, many households have become A qtn. . In view of these aspects, it is more desirable that the baking temperature be 950C to 1150. (&quot;1士从.^^,,立,深制11 DU C. In addition, in the mouth after the second time = ^: 正"" Cheng Zhi Pei burning temperature system is best more stone plus I 刖The calcination temperature of the roasting process of the square, however, the smaller the temperature difference of the crucible is, the addition is not easy to roast the roast: the crucible is changed and the temperature is tempered; the decorative abrasive material is made into various calcining processes. In front of the second: 匕: / 丄 is better - ^ . . , . θ φ 尨 k clothing private roasting temperature of 10 °c or more:: more ideal 疋 more than 2 (rc above the 鬲Temperature above 50 °C. Cangjie is better than the 'different from here, the daily method / method, the manufacturing method described previously (made into the A, the scoop of eight grinding materials, the raw materials of the manufacturing side (4) Fluorine (manufacturing method of rare earth compound in a rare-burning process) is 1249570. 5. Description of the invention (15) A manufacturing method of a fluorination treatment process is not necessarily required, but when the manufacturing method is used, a flaw on a polished surface can be produced. #系研磨材料 that has a good state or a grinding value (grinding speed). Due to the previous description The manufacturing method is a method of using a raw material containing a fluorine-containing alumina compound. If the raw material contains a fluorine-containing rare earth compound which already contains a fluorine component, it is not necessary to perform the fluorination treatment at the manufacturing stage of the abrasive material. Further, in the respective manufacturing methods of the present invention which have been described so far, an abrasive material having a predetermined particle diameter is produced (for example, the Bryan method average particle diameter (DB) becomes 1. 5 //Π1 to 2·5 // In the state of the abrasive material of m, as described in the embodiment described later, powder (crushing), classification, etc. are carried out at an appropriate stage. Next, as the use of the present invention as described so far The method for producing a lanthanum-based abrasive material having a reduced content of calcium (Ca), barium (Ba), iron (Fe), and phosphorus (ρ) by each production method is to reduce the rate of calcium, barium, iron, and As a raw material method, in the case of using such a raw material, it is preferable that the raw material of the lanthanum-based abrasive material is calcium or lanthanum of the raw material: the total content of iron and phosphorus is converted relative to the total rare earth oxide. The ratio of berry ratio (^Ca + Ba + Fe + P) / TRE0) is 2.0 wt% or less. The total content of calcium, barium, iron and phosphorus is reduced relative to the total rare earth oxide by using the raw material %2. The mass ratio of the converted amount is ^^ + ^ + with + ^^ / ^ (8) to 2 · Owt /. The following lanthanide abrasive materials. In addition, as explained earlier, in the manufacture of radioactive elements such as reduced uranium or uranium In the case of the raw material of the content rate, the raw material of the content of calcium, barium, iron and phosphorus is also reduced, and therefore, the manufacture of the raw material for reducing the content of the deuterium, tantalum, iron and the dish is omitted here.

Page 25 2169-6414-PF(N2); Ahddub.ptd 1249570 V. Description of the invention (16) Description of the method. In addition, even if the manufacturing method is such that the amount is 5.0 to 12 wt% with respect to the total dilution, the f/treo becomes this 1 Owt%, or even 5.0. As above, the so-called polishing rate of low bismuth or uranium or the like is The above is the most preferred range of the oxidation of the soil at the end of the -9. Owt% of the fluorine content (TRE0) of the raw material supplied by the roasting process of any of the lanthanum abrasive materials indicated by the yield and the abrasive characteristics. The mass ratio (F/TRE0) is preferably 疋6 · 0~1 1 wt %. This makes it possible to easily produce a bismuth-based abrasive material having a fluorine content of 4.0 Å. According to the present invention, it is possible to provide a lanthanide-based abrasive which is excellent in equivalent or equivalent to the conventional one. [Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a suitable solid wire form of the fluorine-containing fluorene-based polishing material of the present invention will be described. &lt; 田田心贝儿形 The first embodiment is applied. ^ Embodiments The material for the abrasive material shown in Fig. is prepared. τ Table 1

ΓρΠ Th 丄 I I lrv_~^ _sm Content rate (wt%) F Strong heat loss (wt%) TREO (wt%) &lt;0.1 9.7 8 —

— 2i69-6414-PF(N2); Ahddub.ptd Page 26---- 1249570 V. INSTRUCTIONS (17) Among the two raw materials, the raw material A is at 65 (TC, for rare earth carbonates) The obtained rare earth carbonate-based total rare earth oxide-converted mass (TRE〇) prepared to obtain the raw material a is 45 wt%, and Ce02/TRE0 is 61 wt%, (Th + U)/TRE0 becomes less than 0. 0005wt%, (Ca + Ba + Fe + P) / TRE0 is less than 〇 · 4wt%, and (卩) is less than 0 · 1 wt % 〇 Example 1: This embodiment is Raw material A is used. Briefly, raw material A is subjected to wet pulverization, gasification treatment (first time), washing, filtration, drying, pulverization, calcination (first time), dry pulverization, and fluorination treatment ( 2 times), washing, filtration, drying, pulverization, calcination (second time), dry pulverization, and classification to produce a decorative abrasive material. Hereinafter, the method will be described in detail. First, the raw material A is mixed. 2 times the mass of pure water, and the obtained mixture is subjected to wet pulverization by a dry pulverizer. The oxidized hammer ball having a system diameter of 5 mm was pulverized for 8 hours. Next, the raw material slurry obtained by pulverization was stirred, and 10 wt% of hydrogen fluoride was added thereto, and then stirring was continued for 1 hour. The second fluorination treatment). l〇wt% hydrogen fluoride acid is added by the addition of 1 lining% hydrogen fluoride acid and the quality of the total rare earth oxide conversion mass (TRE0) The ratio (F/TRE〇) is 4.5% by weight. Then, the solid component in the body of the precipitate is precipitated, and the supernatant liquid is pulled out to re-slurry the C 2 water. After filtering, the j body is filtered, and then 'at 15 (rc 'for the obtained filter, it is carried out' # is broken by a roller crusher to obtain m check. The average particle size (I) of the obtained scrap product is 1.12. _. Next, for getting

1249570 V. Description of invention (18) ' ^ Disintegration, roasting (the second cooking process). The firing conditions were: calcination temperature 95 (TC, calcination time 12 hours, after calcination, the obtained calcined product was dry-pulverized by a sample rolling mill. Next, the pulverized product was mixed twice as much as the pulverized product. Pure water of mass, adjust the slurry for the obtained pulverized product, stir this in the slurry, and simultaneously add 10% by weight of hydrogen fluoride, and then perform fluorination treatment of so-called stirring (the second fluorine) The amount of 1% by weight of hydrogen fluoride added is the fluorine mass (F1) of the calcined product to be subjected to the fluorination treatment and the fluorine mass (F2) added by the addition of the i%w port t% hydrofluoric acid. The mass ratio σ ((F1+F2)/TRE0) between the total mass of rare earth oxides (TRE0) of 9 and the calcined product is 0.001 wt%. Further, (F1+F2)/TRE〇 It is also expressed as F/TRE0 as F1+F2 = F. Then, it is re-slurryed and washed, and the washed slurry is filtered by a filtration press method at 丨5 ° ° C for The filter residue is filtered, dried for 24 hours, and the dried filter residue is obtained by a roller crusher. The obtained pulverized product is calcined (the second baking process). The calcination conditions are a so-called calcination temperature of 1 〇 5 〇 C and a calcination time of 12 hours. After calcination, the obtained calcined product is obtained by a sample rolling mill. The dry pulverization was carried out, and the obtained pulverized product was classified by a turbo classifier (setting a classification point at 9 # m) to obtain a lanthanum-based abrasive. Further, the obtained abrasive material (Th + u) / TRE 〇 It becomes less than 0.00 0 5Wt%, (Ca + Ba + Fe + P) / TREO becomes less than 〇. 4wt% / ^ Comparative Example 1: This comparative example is compared with Example 1, except that it is always in the light The dry pulverization process after the first baking process makes the addition amount of the 10% by weight of the fluorination treatment and the baking temperature different.

2i69-6414-PF(N2); Ahddub.ptd page 28 1249570 V. Inventive Note (19) &quot; The rest is the same as Embodiment 1. Then, in this comparative example, after the dry pulverization after the calcination, the fluorination treatment in the first embodiment (the second time) was not carried out, and the dry type was used by the thirteen round classifier (set point = point at 9 vm). The obtained pulverized product (average particle diameter (D^1·17 &quot;m) is pulverized and classified to obtain a lanthanum-based abrasive. Further, in the fluorination treatment, the addition amount of 丨0 wt% of hydrogen fluoride is added to cause Acid, adding the added fluorine mass and the whole slurry of the raw material slurry; the mass ratio (F/TRE0) between the Zheli variation quality (TRE0) becomes the established mass ratio (f/tre〇) and culture The burning temperature conditions are starting from 22 cases! 6 and Comparative Examples 2 to 5: These examples and comparative examples are 1 day in comparison with the case of Ba, and except for the fluorination treatment, the fluorine in the first _ person Treatment, adding J 〇wt% 曰 藉 藉 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 The mass ratio. In addition, the amount of the turtle above the τ:〇) is converted to chloric acid, so that it contains fluorinated The sum of the masses and the mass of the gas added to the gasification (10)) ^ ^ f *(TRE0) # % The established mass ratio. The established f quantity 〇) is as shown in Table 2. Negative ratio (F/TM〇) And the calcination temperature condition of the embodiment 7 ···································································· Description (20) The amount of 10% by weight of hydrogen fluoride added in the fluorination treatment is changed until the dry pulverization process after the first firing process is the same as in the first embodiment. In the comparative example, after the dry pulverization after the calcination, in the fluorination treatment (the second time) of the first embodiment, the pulverized product by the dry pulverization was further subjected to the second calcination. The calcined product obtained by the calcination process is subjected to dry pulverization and classified to obtain a lanthanide-based abrasive. The second calcination process is the same as in the example 匕. In addition, the fluorine treatment at the i-th time is added. "II:: Addition of hydrogen fluoride acid added =dm ί Wangί Berry between the amount (tre〇) (0) become established the mass ratio. The calcination temperature of the established Zengdanshi (F/TRE0) and each roasting process is as shown in Table 〖, Comparative Example 6: This comparative example is a conventional method of manufacturing the raw material B (fluorocarbon). Antimony ore concentrate: = This is to produce a grinding speed of 1 ton, and the same conditions as in the example, for the original example. One hundred crushing. Then, by pulverizing, it is obtained. At the same time, adding 5w= of the amount of liquid f corresponding to the slurry, stirring this, acid, and then, continuously performing 3 hours of salt in 1 hour of stirring

In the case of the hydrochloric acid T which is used to reduce the impurities of some mothers and the like, the solid component J slurry in the so-called sinking slurry is carried out. Next, one ^ page 30 2169-6414-PF (N2); Ahddub.ptd 1249570

V. INSTRUCTIONS INSTRUCTIONS (21) _ Drying, the average particle size of the mashed product by the roller crusher f ( D ) # 〗 The dried filter residue. The decomposed product is obtained and calcined, and the sample is too = m by 5G. Next, for the obtained calcined product, dry pulverization is performed = the point obtained for the profit is 9 #m), and the obtained powder is wrong, and the quenching wheel classifier is set (the grading mill material is set. The roasting process, the furnace _ ,, w, and grading to obtain the evaluation of the abrasive materials of the enamel system. The conditions of the dish are as shown in Table 2. By using the various examples and comparisons, the I content is determined, and Blyin is served. Then, the abrasive material is sprayed and scattered, and the particle size distribution average particle diameter (Db) is based on the area around the laser. Next, the average particle diameter (~) and the BET method are used to grind the material. And the evaluation of the flaw on the polished surface of the decorative system obtained in the comparative example?: Measurement 2: In addition, the measurement method, the polishing history and the Guangbei result are not as follows. The evaluation method and evaluation of various polishing characteristics The test will use the test materials (sodium carbonate, potassium carbonate, hydrogen to obtain the lanthanide abrasive material; the examples and (4) examples of the sample test melt. Temperature: J: test, and warm water extractor as the right Chu was adopted by the ruler and the rat ion electrode method. Physical test methods ^ K 52Q1_1 997 (cement Santos P (g / m3). Next, by equation (1) and uncle

2169-6414-PF(N2); Ahddub.ptd Page 31 1249570 V. Description of invention (23) ---- 19.6kPa (200g/m3), set the rotation speed of the grinding tester to 200 rpm 〇 grinding value Evaluation of (grinding speed): After 3 minutes from the start of the polishing, the flat panel for polishing the object was exchanged for the glass, and the flat surface of the polishing value was used. In addition, the glass system for the flat panel installed by the exchange is only measured. Then, after the glass for the flat panel was exchanged, it was polished for 10 minutes to determine the decrease in the quality of the glass due to the polishing, and the "grinding value" was obtained from the value. Further, the polishing value of the abrasive of Comparative Example 1 was used as a reference (10 〇 ). Evaluation of the polishing scratches. The glass for the flat panel to be polished is cleaned by pure water, and the dried polished surface is cleaned in a dust-free state to perform flaw evaluation. The scar evaluation was performed by using a 300,000 lux tooth source lamp as a light source reflection method to observe the glass surface, and the number of large scratches and fine flaws was counted to become a full point at 100 points. The evaluation of the flaw was made by reducing the price. In this evaluation, the polishing accuracy required for the polishing of the glass substrate for hard disk or LCD is used as a criterion for determination. Specifically, in Tables 2 and 4, "〇" indicates 92 points or more (suitable for polishing of HD and LCD glass substrates), and "△" means less than 92 points and 85 points or more (can be used) For polishing, the polishing of the glass substrate for LCD) "Next" "x" indicates that it is less than 8 5 points (cannot be used for polishing of ηd or glass substrate for LCD).

1249570 -15, invention description (24) Table 2 Force) Manufacturing conditions: 研磨-based abrasive materials 寅Examples/Comparative examples 2) Starting materials fluorination treatment 溧 1 time) TREO (Wt%) Inflation process Chengze 1 time Calcination temperature (C) Deuteration treatment (H2 times) TREO (wt%) Burning process CH2 times) Calcination temperature CC) TREO (Wt%)

Th + U

Ba Fe + P

Ca TREO (wt%) TREO (Wt%) S(F) content (wt%) ^3) Average particle diameter Db embedded 4] Average particle size Dso (μηη) (μηι) BET specific surface area (m2/g ) Grinding characteristics to 5) Grinding flaws evaluation ratio 1 WT m 5T W3ΪΕΤ 寅4 S2 寰5 Jing 6 寰7 to 6 3.0 Ts&quot; 8.0 1050J5〇7 &quot;950~~ 150~jlF 75" 850-4.0

8.0 IT 3H W &quot;8F 1050 1050 1050 1050 1050 850 950 94.2 96.8 95.3 94.0 91.9 91.5 93.4 93.8 &lt;0.0005 &lt;0.0005 &lt;0.0005 &lt;0.0005 &lt; 0.0005 &lt;0.0005 &lt;0.0005 &lt;0.0005

&lt;0.4 &lt;0.4~ &lt; 0.4 &lt; ΰ A &lt;0_4 - &lt;〇X &lt;0.4- &lt;〇T

6.5 ~ 22 Mutual *9TTT3 ΎΙ ~6T 1.23 T35 T59 Z07 Z43 274 F89 T52 2.45Z3T Ίλϊ Z65 T24 3Λ2 ΪΤ57 Z24 2.5 T.9 T.7ΤΓ1.4 T94 T8 ΤΓ100 Ϊ52 21? 257 287 305 JTll3

A

A

A

A

A 950 1050 1200 8.0 8.0 8.0 1050 1150 1300 94.0 94.4 96.0 6.0 8.0 1050 950 1050 8.0 1050 1050 93.6 93.6 86.1 &lt;0.0005 &lt;0.0005 &lt;0.0005 &lt;0.0005 &lt;0.0005 0.10 &lt;0.4 &lt;0.4 &lt;0.4

&lt;0.4 &quot;&lt;〇T 5.2 6.8 4.3 6.9 6.6 6.2 2.07 2.46 2.71 1.82 1.73 1.78 2.51 2.87 2.92 2.45 2.56 2.38 1.6 ”2 2.2 2.4 257 295 314 206 201 193 Δ Δ Χ 1) “1” in the table Indicates that no fluorination treatment/or baking process has been carried out. X2) For details of each raw material (Α, Β), #表表1. X3) DB: Brian's method average particle size X4) D5D: particle size distribution in the laser diffraction scattering method and the particle size of the 50% by weight of the accumulated particles of the small particle size side X5) 〇: almost no abrasive scratches, Suitable as an abrasive material. △: There are thousands of abrasive scratches, but they are less suitable and are suitable as abrasive materials. X: Grinding scars are not too many, and are not suitable as abrasive materials. As shown in Table 2, when comparing the abrasive materials of each of the various examples and the abrasive materials of the six cases of the vehicle, the fluorine content and the average particle diameter (d ^ BET specific surface area were found, but the difference was found, but the grinding was not performed. The characteristics of the abrasive materials of the respective B examples were relatively good. As a result, it was found that in the state of manufacturing the abrasive value (grinding speed) of 1, the fluorocarbon was used instead of the fluorocarbon. The antimony concentrate (raw material B) is also more the most ", /, / the original rare earth carbonate pseudo-sintered product (raw material A). The abrasive materials of Comparative Example 1 and Comparative Example 2 are compared with the examples ^~

2i69-6414-PF(N2); Ahddub.ptd Page 34 1249570 V. Inventive Note (25) ^ When grinding materials, the grinding value 辔 ^ ^ The abrasive material of Example 3 is in the ratio compared with the text in Xiaoshi ^^3 Dry/mark. In addition, it is more prone to grinding scars. Compared with this: ': two, when the two grinding materials, the capacity has good grinding characteristics. Because of the particle size of the abrasive material, the average particle size (mouth = eye on the average of the abrasive material, the value of the junction, the abrasive material is carried out ~ 2 · 5 / zm. The upper (B) becomes 1 · 5 = When manufacturing conditions, 'as a manufacturing condition, ν is good === Research::Material: Compared with: 4 grinding value, the research is in comparison with you, you 2, ζΐ, ς * 卜b When the material is damaged #.® #, the abrasive material is prone to grinding

The exhibition is carried out on the basis of the average particle size (Db) of the material. It is best to use the Brian method to achieve the average particle size (db) of 丨5 R as the manufacturing condition. The sound of the sound is 9〇Qt: ~1200 °C. 1 dish per # ί 9 When the abrasive material of Example 2 and the abrasive material of Comparative Example 6 were compared, the two/column 2 series had better polishing characteristics. As a result, it was found that, in the state in which the θ 烧 firing process was carried out, the simmering temperature of the second sinter firing process was taken to be higher than the firing temperature of the first firing process. When ρ was compared with the abrasive material of Example 3 and the abrasive material of Example 7, the Example 3 was comparatively excellent in polishing characteristics. The result, I learned: the best

1249570 V. INSTRUCTIONS (26) Secondly, in the state of the roasting process of 2 times, in the sputum, the rat is treated.圪I private second embodiment in the form of Benbe's mixed rare earth carbon and false side of the rare earth: = : (originally, the obtained fluorine-containing rare earth compound is used as a raw material for the cooking. Here, AM t $ 〃, 糸 糸 糸 糸 糸 〃 〃 糸 糸 糸 糸 〃 〃 〃 〃 AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM Each of the fluorine-containing rare earth compounds produced by the rare earth compound (the physical properties of D1 to D5 and Εΐγ are shown in Table 3. The production of the compound of the second gas and the two earth f (D1): for the rare earth carbonate fake (10) (original A) Wet pulverization, fluorination treatment, washing, pulverization and sintering to obtain a gas-containing rare earth compound m; starting from the dry smashing - until the smashing of the various processes of the cattle: except for wide: gasification The amount of gas acid added and the calcined sputum I were pulverized from the first wet pulverization of Example 1 to the first solution. In addition, the gas (1) phase obtained by the Dunhua treatment was obtained. ΐ ΐί稀. The mass ratio (F/TRE0) between the soil oxide conversion fi(TRE0) becomes Wt%. The baking temperature of the baking process is 70 (TC (refer to FIG. 3) ° The manufacture of the fluorine-containing rare earth compound (D2 to D5): The manufacturing method of the compound is 10% gasification of chlorine-acid 3 except gas treatment: thin force ^ And/or the firing conditions become different, the rest are the same as the fluorine-containing rare earths

1249570 V. INSTRUCTION OF THE INVENTION (27) The method for producing the compound (D 1 ). The mass ratio (F/TRE〇) between the fluorine (F) obtained by the fluorination treatment of each of the fluorine-containing rare earth compounds (D 2 to D5) relative to the total rare earth equivalent mass (TRE0) The firing conditions are as shown in Table 3. As shown in Table 3, the firing of the fluorine-containing rare earth compound (D2) was not carried out. In addition, the firing condition of the fluorine-containing rare earth compound (D3~) is a sintering condition of the fluorine-containing rare earth compound (D1) in addition to the baking temperature, and the fluorine-containing rare earth compound (E1). Manufacture: In addition to the rare earth carbonate calcined product (raw material 6), it is added to the drought/k', dry _, smashing and simmering 糸 ^ / treatment of 10% hydrogen fluoride Y is the same as that of the fluorine, and the rest is the same as that of the rare earth compound (D 1 ) containing L = 去 .. L 釭 釭 釭 釭 釭 釭 釭 釭 釭. The temperature of the (TRE0) is the calcination temperature of the whole rare earth roasting process of 85 〇. The heart (F::RE0) becomes 8.0 wt%, the manufacture of the soil compound (El), and _ by: 3). Next, the calcined product obtained by the fluorine-containing rare product is subjected to a 9-inch mill, and the classification point is 6&quot; m) by the roasting, and the crushing is performed by a turbo classifier (provided by the sample mill) Powder, graded, and smashed, dry pulverized, and recovered from the coarse powder side by the knife level

Then, the obtained pulverized product f is fed into a wheel classifier (particles collected on the coarse powder side at a classification point of 4 A), and classified. Then, a fluorine-containing rare earth compound (E1) is obtained by this fraction. 1249570 Table 3 Manufacturing conditions Composition of fluorine-containing rare earth compounds (D1 ~ D5, E1) Fluorination treatment conditions F Burning temperature ΓΟ TREO (wt ° / 〇) Fluorine (F) content rate (wt ° / o) F TREO ( Wt%) TREO (wt%) A D1 20 700 87.1 15.2 17.5 is called] D2 15 - 83.8 10.5 14.5 D3 15 700 89.1 11.6 13.0 D4 15 1200 94.3 7.3 7.7 D5 10 700 93,8 7.6 8·1 ~ dunn 8.0 850 94.4 6.8 7.2 ---____ 糸1) In the manufacture of D2, τ is not burnt,

V. INSTRUCTIONS (28) A ^ 彳久比巷 Use mixed rare earth carbonates: D4, Ε 1). The rare earth class ^ is shown in Table 4. For example, the treatment of Comparative Example 1 in which the first embodiment was carried out by the mixing, the calcination, the calcination, the dry pulverization, and the seeding process were carried out, and the fluorination treatment was carried out. Therefore, the raw material system (raw material A) and the fluorine-containing rare earth compound (D1 acid salt and fluorine-containing rare earth compound) which are used as the decorative material for the decorative system are omitted for each of the processes κ, the examples 8, 9, 11 and the comparative example 8 In the examples, the raw materials of these examples and the comparative materials were subjected to wet pulverization, drying, and classification to obtain a lanthanum-based abrasive. In the production method of the method for producing the abrasive material, the washing method of the 7 # ”卜, the detailed description of the fluorination is the same as the other embodiment 1 〇, 2 2 as a lanthanide abrasive material = Example 7 · In these examples and comparative examples, Α) and fluorine-containing rare earth _ # material system use mixing Rare earth carbonates (large raw materials (Dl H, soil D5 E1). Rare earth carbonates and

Page 38 2169-6414-PF(N2); Ahddub.ptd 1249570 V. DESCRIPTION OF THE INVENTION (29) The ratio of the fluorine-containing rare earth compound is as shown in Table 4, and in these examples and comparative examples, the raw materials of $, Wet pulverization, fluorination treatment, ice = finely obtained by mixing, smashing, simmering, &amp; pulverization and classification to obtain the output; ^ • over-drying, drying, say 'these examples and comparative examples J: is an abrasive material. In other words, the amount of fluorinated hydrogen fluoride added is different, and the fluorination treatment is more common! . Further, the remaining 10% by weight of the fluorination treatment is the same as the raw material which is the object of the fluorination treatment (the raw material slurry::! _hydrofluoric acid added, the fluorine content added to the second and the worse The evaluation of the total rare earth oxide conversion mass (TR σ ', ((FHF2)/TRE〇--F/TREO) of the slurry is 8·〇wt%] According to various embodiments and the production, the I content, Bryin, and:: the amount of the abrasive material to be applied and the particle size distribution of the particle size distribution (Db), according to the laser In addition, the average particle diameter of the dream A (the D and BET method is used to grind the material, and the flaws of the polished surface of the decorative system obtained in the examples and the comparative examples are measured. The polishing value (polishing rate) and the obtained value 4. In addition, the measurement method, the measurement value, and the evaluation result are shown in the table of the price method, which is common to each of the polishing methods, and the evaluation of various polishing characteristics. form.

2169-6414-PF(N2); Ahddub.ptd Page 39 1249570 V. Inventive Note (30) Table 4 Example Example % &gt; Manufacturing Conditions 铈 System Abrasive Material 2) Mixed Ratio of Raw Materials %) (TREO standard) ® treatment F baking temperature (C) TREO (wt%) Th + U Ca + Ba + Fe + PS (F) content rate (wt%) to 3] average particle diameter Db (μιη楽4] Average particle size Dso (l^m) BET method grinding characteristics Rare earth carbonate false sputum source material A) Contains ® Rare earth lanthanum compound (D1 ~ D5 Έ1) Specific surface area (m2/g) Grinding 値 5 〕 Scar evaluation TREO (wt%) TREO (Wt%) TREO (wt%) 寅8 A+D1 55 45 — 1050 94.3 &lt;0.0005 &lt;0.4 6.5 1.73 2.41 1.6 239 Δ W7 A+D1 75 25 3.0 1050 94.2 &lt;;0.0005&lt;0.4 6.4 1.31 2.53 2.1 135 △ tt8 A+D2 45 55 — 1050 93.7 &lt;0.0005 &lt;0.4 6.8 1.27 2.17 2.6 122 Δ A+D3 40 60 — 1050 94.2 &lt;0.0005 &lt;0.4 6.7 1.98 2.73 1.5 263 〇 9 9 A+D4 0 100 — 1050 93.6 &lt;0.0005 &lt;0.4 7.1 2.69 3.03 0.91 298 X g1〇A+D5 50 50 3.0 1050 93.9 &lt;0.0005 &lt;0.4 6.5 2.11 2.62 1.7 285 〇宝11 A+E1 10 90 — 1050 95.3 &lt;0.0005 &lt;0.4 5.5 1.83 2.52 1.6 234 〇寅12 A+E1 10 90 3.0 1050 93.5 &lt;0.0005 &lt;0.4 6.9 2.24 2.65 1.5 259 〇X1) "One" guarantees that no fluorination treatment has been carried out. Χ 2) Details of the substances in each raw material (A, D1 ~ D5, Ε 1) are listed in Table 1 茇 Table 3» X3) DB: Brian's average particle size X4) D5i): scattered in the laser Particle size distribution and particle size of 50% by weight of the edge of the small particle size side of the edge of the X5) 〇: almost no honing scar, suitable as a honing material. Δ: There are thousands of abrasive scratches, but it is less suitable and is suitable as an abrasive. X: There are many grinding scars and it is not suitable as an abrasive material. As shown in Table 4, the abrasive materials of Comparative Example 7 and Comparative Example 8 were smaller than the abrasive materials of the examples. Further, the abrasive material of Comparative Example 9 was liable to be scratched when compared with the abrasive material of the example. In contrast to these, the abrasive materials of the examples all have good abrasive properties. Therefore, the average particle size (DB) of the abrasive material is reviewed. As a result, it is found that the average particle size (DB) of the Brian method is 1. 5 // m~2. . Then, it is understood that, when focusing on the raw material of the polishing material, for example, it is understood from the comparison between Example 9 and Comparative Example 8 that the fluorine-containing rare earth compound having a higher fluorine content is used, and a smaller amount is used. It is good to prepare a fluorine-containing rare earth compound having a low fluorine content to make

Page 40 2169-6414-PF(N2); Ahddub.ptd 1249570 V. INSTRUCTION DESCRIPTION (31) Use more. Next, the ideal material is obtained from the comparison of the abrasive materials of Example 8. In other words, the material of the abrasive material of the example 7 contains the content obtained by the calcination; the second $ is known to be the best compound in the original total rare earth oxide conversion and the raw material The ratio of the oxide-converted mass of the material is the same as that of the above-mentioned fluorine-containing rare earth compound, and the abrasive material of Example 8 and the raw material. Therefore, it is known that the composite material contained in the raw material π is compared with D2. That is to say, it is known that the fluorine-containing rare earth compound which is the best for the soil-based compound is better than the drum: it has been obtained. In addition, it is then learned by the ship's implementation; each comparison of more geographical materials: grinding in the heart and the example 12

It is an abrasive material that pays for better abrasive properties. The clothing I glass is used in, for example, a glass substrate for a disk or a magnetic disk, an active matrix type LCD (liquid crystal display), or a liquid crystal film. Clock, computer, camera (3), solar cell, etc.: Glass substrate for display, glass substrate for LSI mask, glass substrate for light = optical lens, etc. (4) Mirror 4 2169-6414-PF(N2); Ahddub. Ptd 1249570 Schematic description of page 42 2169-6414-PF(N2); Ahddub.ptd

Claims (1)

Sixth, the scope of application for patents 1 · A lanthanide abrasive material containing a topography (F), wherein the mass ratio of the total rare earth oxide conversion mass (TREO) to the mass of the abrasive material is 90 wt% or more, Syria (Th) and uranium 5 / The ratio of the total content of the (U) to the total amount of the total amount of the rare earth oxide ((Th + U) / TREO) is 〇 〇 wt 5wt% or less, and the average particle size (DB) of the Bryan method is 1. 5 / / m~2. 5 // m. 2 · For example, in the scope of patent application 苐1, the proportion of cerium oxide (Ce〇2) occupied by the total rare earth oxide conversion mass (TRE0) is 50wt%~70wt °/〇. 3. The decorative abrasive according to the first aspect of the invention, wherein the fluorine content is 4.0% by weight to 10% by weight. 4. The abrasive material according to item 2 of the patent application, wherein the fluorine content is 4.0% by weight to 10% by weight. 5. The lanthanide abrasive material according to any one of claims 1 to 4, wherein the total content of calcium (Ca), barium (Ba), iron (Fe), and phosphorus (P) is relative to the total rare earth The mass ratio of the mass of the oxide-like conversion ((Ca+Ba+Fe+P)/TREO) is 2.% by weight or less. 6. A method for producing a lanthanum-based abrasive material, which comprises a method of calcining a raw material, wherein a raw material supplied to the calcination process contains a rare earth compound obtained by calcination, and the whole rare earth oxide of the raw material is converted. The ratio of the mass of the oxide of the fluorine-containing rare earth compound to the mass of the fluorine-containing rare earth compound is 30% by weight or more, and the total content of the yttrium (Th) and the uranium (u) is proportional to the mass ratio of the total rare earth oxide (( Th + u) / TRE is 0.05 wt% or less. 7 · The manufacturer of the abrasive material according to item 6 of the patent application scope 1249570 6. The patent application scope method, wherein the calcination temperature of the raw material is 90 ° C ~ 1 2 0 0 C and is more enthalpy than the roasting temperature of the roasting of the fluorine-containing rare earth compound 1 0 ° Above C. a method for producing a lanthanide abrasive material, comprising at least one fluorination treatment process containing fluorine in a raw material of the lanthanide abrasive material, and having a baking process performed after the fluorination treatment process, wherein The number of times of the baking process after the fluorination treatment process is two or more times, and the total content of the enthalpy (Th) and uranium (U) of the object to be fired in the first baking process is equivalent to the total amount of the rare earth oxide. The mass ratio ((Th + u) / TRE 〇) is 0.05 wt% or less. 9 · The manufacturing method of the 研磨-based abrasive material according to item 8 of the patent application 'wherein the firing temperature of each roasting process is 70 〇 or more, and the calcination temperature of the final baking process is 9 〇〇 ° c 〜 1 20 0 ° C. The calcination temperature of each of the second and subsequent calcination processes is higher than the calcination temperature of the calcination process before the respective calcination processes. (1) The manufacturing method of the decorative abrasive material according to any one of claims 6 to 9, wherein the raw material of the lanthanum abrasive material supplied to the baking process is calcium (Ca) or strontium. The mass ratio of (Ba), iron (Fe), and phosphorus (P) to the total rare earth oxide equivalent (TREO) ((Ca + Ba + Fe + P) / TREO) becomes 2. Owt% the following. 2169-6414-PF(N2); Ahddub.ptd Page 44