CN108033775A - A kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate - Google Patents
A kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate Download PDFInfo
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- CN108033775A CN108033775A CN201711170452.4A CN201711170452A CN108033775A CN 108033775 A CN108033775 A CN 108033775A CN 201711170452 A CN201711170452 A CN 201711170452A CN 108033775 A CN108033775 A CN 108033775A
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- Prior art keywords
- magnesia
- parts
- brick
- mass percentage
- dextrose monohydrate
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- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 43
- 239000011449 brick Substances 0.000 title claims abstract description 40
- 229960000673 dextrose monohydrate Drugs 0.000 title claims abstract description 25
- SPFMQWBKVUQXJV-BTVCFUMJSA-N (2r,3s,4r,5r)-2,3,4,5,6-pentahydroxyhexanal;hydrate Chemical group O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O SPFMQWBKVUQXJV-BTVCFUMJSA-N 0.000 title claims abstract description 23
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 1
- 239000007767 bonding agent Substances 0.000 abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 abstract description 6
- 230000023556 desulfurization Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 239000003595 mist Substances 0.000 abstract description 2
- 235000012245 magnesium oxide Nutrition 0.000 description 14
- 235000019580 granularity Nutrition 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011822 basic refractory Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229960001031 glucose Drugs 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical group [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to fire resisting material field, more particularly to a kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate.Include the raw material of following parts by weight：92 22 41 parts of brickmaking magnesia；92 useless 18 parts of bricks；Calcine Al2O335 parts of micro mist；35 parts of bonding agent Dextrose Monohydrate；Its physical and chemical index：MgO mass percentage >=92%；Al2O3Mass percentage≤0.4%；SiO2Mass percentage≤3%；Fe2O3Mass percentage≤1.10%；CaO mass percentage≤1.05%；Compressive resistance >=100.4MPa；Apparent porosity≤17.0；Bulk density >=2.92g/cm3.Its production method, includes the following steps：1) raw material crush, sieve, fine grinding；2) dispensing；3) it is kneaded；4) it is molded；5) dry, burn till.The present invention will not produce pollution, reach environmental-protection function；Desulfurization device need not be installed, you can reach standard limit of smog release；Can more preferable acceleration of sintering；It is cost-effective, and pollute small.
Description
Technical field
The present invention relates to fire resisting material field, it is more particularly to a kind of with Dextrose Monohydrate replace paper pulp burned-magnesia brick and its
Production method.
Background technology
Magnesia brick refers to content of magnesia more than 90%, the basic refractory using periclase as principal crystalline phase.Burned-magnesia brick is adopted
It is primary raw material with high-quality magnesite clinker, bonding agent is used as using paper pulp.After mixing and high-pressure molding, the height more than 1550 DEG C
Burnt till in warm tunnel oven.Magnesia brick has higher refractoriness, and good alkali resistance slag performance, loading softening start temperature is high, has
Good heat endurance, anti-erosion and antistrip performance.It is mainly used for making steel alkaline open-hearth furnace, EAF bottom and furnace wall, oxygen turns
The permanent liner of stove, non-ferrous metal smelting furnace, hyperthermia tunnel Kiln calcine magnesia brick and cement rotary kiln liner, the furnace bottom of heating furnace and
Furnace wall, regenerator chamber of glass kiln checker brick etc..
The bonding agent of the production and application of present burned-magnesia brick is sulphite secondary stock, the sulphur containing 3%-4% in paper pulp,
When burning till, these sulphur can be discharged in the form of sulfur oxide.On the one hand the loss of desulfurization device is added, on the other hand
Air can be polluted, causes environmental disruption.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of with Dextrose Monohydrate replace paper pulp burned-magnesia brick and its
Production method, reduces the generation of sulfur dioxide when magnesia brick produces, so as to reduce the loss and atmosphere pollution of desulfurization device.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate, its physical and chemical index：MgO >=92%；Al2O3≤ 0.4%；
SiO2≤ 3%；Fe2O3≤ 1.10%；CaO≤1.05%；Compressive resistance >=100.4MPa；Apparent porosity≤17.0；Bulk density
≥2.92g/cm3。
Its raw material includes following parts by weight of component：22-29 parts of the 92 brickmaking magnesia of 200 mesh, 0-1mm (refers to and is less than more than 0mm
Equal to 1mm) 22-29 parts of 92 brickmaking magnesia, 33-41 parts of the 92 brickmaking magnesia of 1-3mm (refer to and be less than or equal to 3mm more than 1mm),
Useless 1-8 parts of the brick in the 92 of 200 mesh, 92 useless 1-7 parts of the bricks of 0-1mm (refer to and be less than or equal to 1mm more than 0mm), 1-3mm (refers to small more than 1mm
In equal to 3mm) 92 useless 1-7 part of bricks, calcining Al2O33-5 parts of micro mist, 3-5 parts of bonding agent Dextrose Monohydrate.
A kind of production method for the burned-magnesia brick for replacing paper pulp with Dextrose Monohydrate, specifically comprises the following steps：
(1) raw material crush, sieve, fine grinding：92 brickmaking magnesia and 92 useless bricks are crushed respectively, are sieved, fine grinding：By 92 brickmaking
Magnesia is slightly broken in jaw crusher, and the particle after slightly breaking enters thin broken in kibbler roll, rolls, finally by vibration
Sieved, screen size is 0-200 mesh, 0-1mm, 1-3mm；92 useless bricks are slightly broken in jaw crusher, it is thick broken
Particle afterwards enters thin broken in kibbler roll, rolls, and is sieved finally by vibrating screen, screen size is 0-200 mesh, 0-
1mm、1-3mm；
(2) it is formulated：Formula weighs raw material as described in claim 1-4；
(3) it is kneaded：The raw material of 0-1mm, 1-3mm granularity is first added, is kneaded 1-2min, Dextrose Monohydrate is then added and mixes again
2-3min, adds after fine powder is kneaded 8-10min and discharges；
(4) it is molded：630t press-moldings are used after discharging, cloth is uniform, ensures 2-3 tip-tap, and green brick forming volume is close
Spend for 2.92-2.94g/cm3；
(5) dry, burn till：Adobe is first put into drying kiln for drying 10-12h discharge moisture, then tunnel is entered by kiln car
Burnt till in road kiln；Cart system is per car 70-100min, and calcining system burns till 1480 DEG C for highest, 3 high temperature dots, and oil gun is equal
For to rifle.
Compared with prior art, the beneficial effects of the invention are as follows：
1. Dextrose Monohydrate not sulfur-bearing, will not produce pollution, reach environmental-protection function.
After 2. bonding agent is changed to Dextrose Monohydrate by paper pulp, pollutant, therefore nothing are all free of in fuel, raw material, bonding agent
Desulfurization device need to be installed, you can reach standard limit of smog release.
3. Dextrose Monohydrate bonding agent belongs to low-temperature binder, when alumina powder is used together, can preferably promote
Into sintering.
4. it is cost-effective in the case where key index is substantially without influence, and pollute small.
Embodiment
With reference to embodiment, the present invention is further described：
The present invention will be described in detail for following embodiments.These embodiments be only to preferred embodiment of the invention into
Row description, does not limit the scope of the present invention.
Embodiment 1-3 is given below, replaces the formula of the burned-magnesia brick of paper pulp as shown in table 1 with Dextrose Monohydrate：
1 embodiment 1-3 of table makes the formula of gunning refractory using 92 brickmaking magnesia as primary raw material
Primary raw material index is shown in Table 2：
2 primary raw material index of table
The production method of the burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate of above-described embodiment 1-3, comprises the following steps：
1) raw material crush, sieve, fine grinding：
92 brickmaking magnesia are slightly broken in jaw crusher, it is thick broken after particle enter thin broken in kibbler roll,
Roll, sieved finally by vibrating screen, it is 200 mesh, 0 ＜ granularities≤1mm, 1mm ＜ granularity≤3mm particle diameters that granularity, which is made,
Raw material, 92 useless bricks are slightly broken in jaw crusher, and the particle after slightly breaking enters thin broken in kibbler roll, rolls, most
Sieved afterwards by vibrating screen, granularity is made as 200 mesh, the raw material of 0 ＜ granularities≤1mm, 1mm ＜ granularity≤3mm particle diameters；
2) dispensing：
Raw material is weighed by above-mentioned formula；
3) it is kneaded：
The raw material of 0-1,1-3 granularity is first added, is kneaded 2min, Dextrose Monohydrate is then added and mixes 3min again, is added thin
Powder discharges after being kneaded 9min.
4) it is molded：
630t press-moldings are used after discharging, cloth is uniform, ensures 3 tip-taps, green brick forming bulk density is 2.94g/
cm3。
5) dry, burn till：
Adobe is first put into drying kiln for drying 12 it is small when discharge moisture, then entered by kiln car in tunnel oven and burnt till.Push away
Car system is per car 90min, and calcining system burns till 1480 DEG C for highest, and 3 high temperature dots, oil gun is to rifle.
6) check and accept and pack：
1 checks and accepts：
The sampling of 1.1 material, check and accept and press YB 367-75《Refractory product sampling, check and accept, take care of and transport rule》Carry out.
Chemical composition analysis is done in 1.2 grab sample.
2 packagings, transport, storage and quality certificate：
YB 367-75 are pressed in packaging, transport and the storage of 2.1 material《Refractory product sampling, check and accept, take care of and transport rule》Into
OK.
2.2 material must be accompanied by the quality certificate that technical supervision department signs and issues when dispatching from the factory, indicate supplier's title or emblem mark, need
Square title, Shipping Date, contract number, standard number, name of product, the trade mark, lot number and physical and chemical index, wait result to report.
My company adheres to developing for many years high-new refractory material, services international and domestic metallurgical and building material industry, company
The marketability of capacity for technological innovation and new product also obtains the consistent accreditation of user.Produced for existing burned-magnesia brick
The loss problem of desulfurization device, and the environmental protection policy that response country implements are added in journey, my company proposes a kind of water
Glucose replaces the burned-magnesia brick of paper pulp.Dextrose Monohydrate not sulfur-bearing, will not produce pollution, reach environmental-protection function.Bonding agent by
After paper pulp is changed to Dextrose Monohydrate, pollutant is all free of in fuel, raw material, bonding agent, therefore desulfurization device need not be installed, you can
Reach standard limit of smog release.Dextrose Monohydrate bonding agent belongs to low-temperature binder, when alumina powder is used together, Ke Yigeng
Good acceleration of sintering.It is cost-effective in the case where key index is substantially without influence, and pollute small.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate, it is characterised in that include the raw material of following parts by weight：
Its physical and chemical index：MgO mass percentage >=92%；Al2O3Mass percentage≤0.4%；SiO2Mass percentage
≤ 3%；Fe2O3Mass percentage≤1.10%；CaO mass percentage≤1.05%；Compressive resistance >=100.4MPa；It is aobvious
The porosity≤17.0；Bulk density >=2.92g/cm3。
2. a kind of burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate according to claim 1, it is characterised in that described 92
Brickmaking magnesia is mixed by the 92 brickmaking magnesia of different-grain diameter of following parts by weight：22-29 parts of the 92 brickmaking magnesia of 200 mesh；0 ＜
22-29 parts of the 92 brickmaking magnesia of particle diameter≤1mm；33-41 parts of the 92 brickmaking magnesia of 1 ＜ particle diameters≤3mm.
3. a kind of burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate according to claim 1, it is characterised in that described 92
Useless brick is mixed by the different-grain diameter 92 of the following parts by weight brick that gives up：Useless 1-8 parts of the brick in the 92 of 200 mesh；The 92 of 0 ＜ particle diameters≤1mm
Useless 1-7 parts of brick；Useless 1-7 parts of the brick in the 92 of 1 ＜ particle diameters≤3mm.
4. a kind of burned-magnesia brick that paper pulp is replaced with Dextrose Monohydrate according to claim 1, it is characterised in that described 92
CaO mass percentage≤1.5% in brickmaking magnesia.
5. a kind of a kind of production method for the burned-magnesia brick for replacing paper pulp with Dextrose Monohydrate according to claim 1, its
It is characterized in that, specifically comprises the following steps：
(1) raw material crush, sieve, fine grinding：92 brickmaking magnesia and 92 useless bricks are crushed respectively, are sieved, fine grinding：By 92 brickmaking magnesia
Slightly broken in jaw crusher, it is thick broken after particle enter thin broken in kibbler roll, roll, finally by vibrating screen into
Row screening, screen size is 0-200 mesh, 0-1mm, 1-3mm；92 useless bricks are slightly broken in jaw crusher, after slightly breaking
Particle enter kibbler roll in thin broken, roll, sieved finally by vibrating screen, screen size for 0-200 mesh, 0-1mm,
1-3mm；
(2) it is formulated：Formula weighs raw material as described in claim 1-4；
(3) it is kneaded：The raw material of 0-1mm, 1-3mm granularity is first added, is kneaded 1-2min, Dextrose Monohydrate is then added and mixes 2- again
3min, adds after fine powder is kneaded 8-10min and discharges；
(4) it is molded：500-630t press-moldings are used after discharging, cloth is uniform, ensures 2-3 tip-tap, and green brick forming volume is close
Spend for 2.92-2.94g/cm3；
(5) dry, burn till：Adobe is first put into drying kiln for drying 10-12h discharge moisture, then tunnel oven is entered by kiln car
In burn till；Cart system is per car 70-100min, and calcining system burns till 1480 DEG C for highest, and 3 high temperature dots, oil gun is pair
Rifle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170452.4A CN108033775A (en) | 2017-11-22 | 2017-11-22 | A kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170452.4A CN108033775A (en) | 2017-11-22 | 2017-11-22 | A kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate |
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| Publication Number | Publication Date |
|---|---|
| CN108033775A true CN108033775A (en) | 2018-05-15 |
Family
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| CN201711170452.4A Pending CN108033775A (en) | 2017-11-22 | 2017-11-22 | A kind of burned-magnesia brick and its production method that paper pulp is replaced with Dextrose Monohydrate |
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Application publication date: 20180515 |