CN1327436A - Calcium carbonate, and method for producing the same - Google Patents
Calcium carbonate, and method for producing the same Download PDFInfo
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- CN1327436A CN1327436A CN00802411A CN00802411A CN1327436A CN 1327436 A CN1327436 A CN 1327436A CN 00802411 A CN00802411 A CN 00802411A CN 00802411 A CN00802411 A CN 00802411A CN 1327436 A CN1327436 A CN 1327436A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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Abstract
The invention provides calcium carbonate particles having an average shorter diameter of primary particles of 0.1 to 0.5 mu m, an average longer diameter of primary particles of 0.15 to 1.5 mu m and an aspect ratio of 1.5 to 3.0 and preferably in the shape of a grain of rice, a straw ricebag or a cylinder having rounded corners; and a method for producing calcium carbonate through the reaction of calcium hydroxide with carbon dioxide, characterized in that an organic compound having a hydroxyl group is added to the carbonization reaction system in an amount of 20 to 200 parts by weight relative to 100 parts by weight of calcium oxide which is a raw material used as the source of calcium. Said calcium carbonate particles exhibit good dispersibility, the preparation method of the calcium carbonate particles is simple and cost of the method is low.
Description
The present invention relates to lime carbonate and manufacture method thereof by calcium hydroxide and the generation of carbon dioxide gas precursor reactant, the average minor axis of primary particle that is particularly related to favorable dispersity is 0.1～0.5 micron, and the average major diameter of primary particle is that 0.15～1.5 micron and long-width ratio are 1.5～3.0 lime carbonate and manufacture method thereof.
Manufacture method as synthetic calcium carbonate, it is known that to have to be blown into " liquid-gas " method that carbon dioxide reacts in calcium hydroxide slurry be representative, concentration, temperature of reaction, reaction method by the control calcium hydroxide slurry, have additive-free and reaction conditions such as kind, obtain the lime carbonate of various particle diameters and shape.
But, if " liquid-gas " method that extensively adopts in the employing modern industry, the average minor axis of the primary particle of favorable dispersity are 0.1～0.5 micron, the average major diameter of primary particle is that 0.15～1.5 micron and long-width ratio are that the manufacture method of 1.5～3.0 lime carbonate can't be guaranteed.This lime carbonate be applicable to raising need strict control size of particles, shape and size-grade distribution some paper grade (stock) coating pigment and add material, tape with various performances such as antiseized fillers, this manufacture method cheaply is desirable.In order to address this problem, the method that adds the nucleation crystal seed in as the calcium hydroxide slurry of the calcium hydroxide slurry of growth medium or part carbonating is documented in special fair 7-5303 number and special fair 3-19165 number each communique, but, because crystal seed preparation is carried out and is wanted the pilot-gas flow simultaneously in other operation, so has the problem of whole complex procedures.
Carry out the part carbonating and generate tabular basic carbonate calcium under the pH value is not reduced to condition more than 0.2, then, carry out carbonating and finish until reaction, this method is documented in the special fair 3-3605 communique.But, need low degree ground to suppress the flow of carbon dioxide and, expend time in during manufacturing, and operation be loaded down with trivial details according to pH value transform gas flow.
In addition, after wet type grinds the calcium hydroxide slurry of part carbonating, add the secondary calcium hydroxide slurry and finish carbonating, this method is documented in the spy and opens in the flat 5-21634 communique, grind owing to adopt sand mill to carry out wet type after carrying out the part carbonating, same whole operation becomes loaded down with trivial details.
Above synthesis method is because the lime carbonate that generates is cubes or rhombohedron, so particle is assembled easily, when being used for paper grade (stock) coating pigment etc., the smoothness on coated paper surface, gloss etc. are difficult to improve.
On the other hand, the method for preparing spindle shape lime carbonate be documented in special public clear 54-28399 number, the spy opens flat 6-56422 number and special fair 8-18827 number each communique in, but also there is preparation in these methods and adds crystal seed or wet type grinds the loaded down with trivial details problems of operation such as raw material calcium hydroxide slurry.
Spindle shape lime carbonate causes the angle breakage of particle easily because of its shape.Like this, for example when being used for paper grade (stock) coating pigment etc., might reduce the surface strength of coated paper, when being used for tape, producing powder and might cause and come off with antiseized filler.
Therefore, the object of the present invention is to provide the average minor axis of primary particle of favorable dispersity is 0.1～0.5 micron, the average major diameter of primary particle is that 0.15～1.5 micron and long-width ratio are 1.5～3.0 lime carbonate, and the manufacture method that can make the lime carbonate of this lime carbonate easy and at an easy rate.
In order to achieve the above object, the manufacture method of lime carbonate of the present invention is as follows: generate dispersed good lime carbonate in order to react by calcium hydroxide and carbon dioxide, add organism, make calcium ion and carbanion and the above-mentioned organic compound with hydroxyl coexists.
According to the present invention, have the organic compound of hydroxyl can be before carbonating begins or beginning after add, and preferably begin back carbonating rate and reach the whole of about 20% o'clock adding specified rate at carbonation reaction.Organic compound mixed with the powder raw material of unslaked lime or slaked lime before carbonation reaction begins, and perhaps was added drop-wise in the digestion water.In addition, also can add by being blown in the mixing machine in the powder raw material or being added drop-wise in the calcium hydroxide slurry.
The add-on of organic compound is for being that the raw material calcium source of 100 weight parts is 10～200 weight parts with respect to being converted into calcium oxide (CaO).When 10 weight parts were following, the shape of particle can't obtain the cylindric calcium carbonate particles that the grain of rice shape of desired shape, shape with a tight waist or angle come off near cubic, if more than 200 weight parts, it is the highest that effect reaches, and is worthless with regard to cost.Preferred 50～180 weight parts that add.In this scope, the long-width ratio of primary particle is more than 2, therefore, as paper grade (stock) pigment etc. the time, can obtain to improve easily the particle of the good shape of smoothness etc.
As addition means, can be used for preparation digestion water and the employed water of slurry by in unslaked lime or slaked lime powder raw material, mixing, perhaps being added drop-wise to and dissolve by kneader.And, can in mixing machine, be blown into by spraying, also can be before the beginning carbonation reaction or carbonation reaction carbonating is blunt after beginning was added drop-wise in the calcium hydroxide slurry by about 20% o'clock.But,, addition means is not particularly limited as long as can obtain calcium ion and carbanion and the state that the organic compound with hydroxyl coexists in when reaction.
The organic compound preferred molecular weight with hydroxyl among the present invention is below 600, specifiable have a such glycols of ethylene glycol, glycol ether, triglycol, polyoxyethylene glycol, propylene glycol, polypropylene glycol and butyleneglycol, the alcamines that Monoethanolamine MEA BASF, diethanolamine and trolamine are such, glycerols that glycerine and Polyglycerine are such and their mixture, preferred propylene glycol and ethylene glycol.
Before the reaction, preferably the concentration of calcium hydroxide slurry is adjusted to 3～20 weight %, temperature is adjusted to 10～20 ℃.In fact reach 100% degree to the carbonating rate by in this calcium hydroxide slurry, being blown into carbon dioxide or containing the mixed gas of carbon dioxide, make to react.The concentration of calcium hydroxide is during less than 3 weight %, and industrial production is poor, if surpass 20 weight %, slurry viscosity increases, and operability is poor, all is undesirable, and this is the same with existing calcium hydroxide manufacturing method.And know usually, when reaction begins preceding temperature less than 10 ℃, generate the aggregate of sparite easily, on the other hand, if surpass 20 ℃, can generate the aggregate of spindle shape particle and sparite, be difficult to obtain evenly and the product of favorable dispersity.
Under these conditions, calcium ion and carbanion and have the organic compound coexistence of hydroxyl and carbonation reaction takes place, the average minor axis of primary particle that can obtain favorable dispersity is 0.1～0.5 micron, the average major diameter of primary particle is 0.15～1.5 micron, long-width ratio is 1.5～3.0, and is shaped as the columned lime carbonate that grain of rice shape, shape with a tight waist or angle come off.But the organic compound with hydroxyl preferably reaches interpolation in 20% o'clock in the carbonating rate of calcium hydroxide at the latest.Add organic compound if surpass 20% back in the carbonating rate, when the carbon dioxide gas scale of construction is big, the particle gelatinize of generation, at carbon dioxide after a little while, the particle generation gigantism of generation is difficult to obtain the lime carbonate of required favorable dispersity.
Because the lime carbonate dispersion property that obtains by the present invention is very good, so, do not need to adopt medium grinding machine etc. to pulverize, it would be better to it is in order to prevent the particle breakage, when the preparation high concentration slurry, only needing the short period of time slurry processing by adding dispersion agent is to make us desirable.
Manufacture method according to grain of rice shape lime carbonate of the present invention, can obtain homogeneous and the average minor axis of primary particle favorable dispersity is 0.1～0.5 micron, the average major diameter of primary particle is 0.15～1.5 micron, long-width ratio is 1.5～3.0, and is shaped as the columned lime carbonate that grain of rice shape, shape with a tight waist or angle come off.The manufacture method of grain of rice shape lime carbonate of the present invention only is used for being about 20% in material powder, digestion water or carbonating rate and just can implements by the device that mixes or the organic compound with hydroxyl is added in dissolving with interior calcium hydroxide slurry by additional in existing equipment, can easy realization at an easy rate.And, the organic compound that adds is not owing to enter in the calcium carbonate crystal, the dried up organic compound dissolved state that is in of branch that dehydration produces, can be used as the water cycle use that is used to prepare digestion water or calcium hydroxide slurry, can make the cylindric lime carbonate that grain of rice shape, shape with a tight waist or angle come off thus more at an easy rate.
The lime carbonate that adopts lime carbonate manufacture method of the present invention to make, excellent dispersion, easy high concentration slurryization, therefore, can expect particularly when using, to improve various performances such as whiteness, glossiness, smoothness and opaqueness as paper grade (stock) coating pigment and interpolation material etc., when being used for tape, also can use, and obtain high-performance with the form of the ethylene glycol dispersion etc. of the antiseized filler of control highly.Because the homogeneity of particle is good, when using as the paper grade (stock) coating pigment, glossiness improves, and during as antiseized filler, the non-stick property raising.Owing to have the columned shape that grain of rice shape, shape with a tight waist or angle come off, particle is difficult for assembling, therefore the smoothness, glossiness on coated paper surface etc. have been improved, again because the angle of particle cracky not, reduce and can prevent to produce coming off that powder causes during as antiseized filler in the surface strength of coated paper.
Manufacture method according to lime carbonate of the present invention, the average minor axis of primary particle that can obtain favorable dispersity is 0.1～0.5 micron, the average major diameter of primary particle is 0.15～1.5 micron, and long-width ratio is 1.5～3.0, and preferable shape is the cylindric lime carbonate that grain of rice shape, shape with a tight waist or angle come off.
The simple declaration of drawing
Fig. 1 is the electron micrograph (10000 times) of the lime carbonate that obtains of embodiment 2.
Fig. 2 is the electron micrograph (10000 times) of the lime carbonate that obtains of embodiment 5.
Embodiment
Below embodiments of the invention are described.The present invention is not limited to the following examples, says nothing of the embodiment of possibility appropriate change in aim scope of the present invention.
(embodiment 1)
Our company is made caustic lime block (JIS commercial lime, special number of unslaked lime) be crushed to below the granularity 1mm, as the lime carbonate raw material.The ethylene glycol that adding is 30 weight parts with respect to these calcium carbonate powders 100 weight parts mixes, mix about 20 ℃ water of 1.5 times (48 weight parts) of calcium oxide digestion the becoming required theoretical water of calcium hydroxide, digest and slaking, obtain the calcium hydroxide powder.Adopt that this calcium hydroxide powder makes that concentration is 7%, temperature is 15 ℃ slurry, with 4 liters/minute. kilogram (Ca (OH)
2) flow velocity feed carbon dioxide, reach 100% in fact until the carbonating rate, finish reaction, obtain lime carbonate.
The lime carbonate that makes is carried out electron microscope observation, and results verification is: the average minor axis of primary particle is that 0.4 micron, the average major diameter of primary particle are 0.6 micron, the median size that obtains by the laser refraction method be 1.0 microns uniformly, cylindric particle favorable dispersity, that grain of rice shape, shape with a tight waist or angle come off.That is, shown in the electron micrograph of Fig. 1, from shape, to be that middle body is cylindric, two end portions is hemispheric particle.Certainly comprise that former post and hemisphere have distortion to a certain degree.The diameter of columned axis direction is a major diameter, and the diameter of radial direction is a minor axis.
The average minor axis of primary particle be meant the multiplying power of taking be in 30000 times the electron micrograph with electronic caliper to the shortest string of the particle assay particle on any two diagonal lines (being the length of diameter of the cylindric radial direction of particle), with its minor axis as particle, ask its mean value, as the average minor axis of primary particle.Equally, in electron micrograph, measure the long-chord (being the length of the cylindric axis direction diameter of particle) of particle on two diagonal lines, with its major diameter, ask its mean value, as the average major diameter of primary particle size as particle.The mean diameter of measuring by the laser refraction method is the value that adopts the system laser refraction formula particle size distribution device LA-500 of Horida, Ltd. (JP) 2 Miyanohigashi-machi, Kissyoin, Minami-ku, Kyoto. Japan to measure, and measures the particle diameter of twice state of aggregation.Mean diameter is the expression good more value of the more little dispersiveness of this value of comparing with primary particle size.
(embodiment 2)
Except add with respect to lime powder 100 weight parts is the ethylene glycol of 80 weight parts and mix, the process by similarly to Example 1 prepares lime carbonate.Can confirm by electron microscope observation, the lime carbonate that obtains be the average minor axis of primary particle be 0.4 micron, the average major diameter of primary particle be mean diameter that 0.8 micron, laser refraction method are measured be 1.2 microns evenly and the grain of rice shape particle of favorable dispersity.Electron micrograph (10000 times) is represented at Fig. 1.
(embodiment 3)
Except add with respect to lime powder 100 weight parts is the ethylene glycol of 150 weight parts and mix, the process by similarly to Example 1 prepares lime carbonate.Can determine that by electron microscope observation the lime carbonate that obtains is that the average minor axis of primary particle is 0.4 micron, the average major diameter of primary particle is 1.0 microns, and the mean diameter that the laser refraction method is measured is the grain of rice shape particle of 1.3 microns even and favorable dispersity.
(embodiment 4)
Except the flow velocity of carbon dioxide among the embodiment 1～3 is 10 liters/minute. kilogram (Ca (OH)
2) outside, carrying out carbonation reaction with same process, the result obtains lime carbonate.The following record of result with electron microscope observation.Fig. 2 represent with embodiment 5 in the same figure of Fig. 1.
Embodiment 4: the average minor axis of primary particle be 0.2 micron, the average major diameter of primary particle be mean diameter that 0.3 micron, laser refraction method are measured be 0.6 micron evenly and the grain of rice shape particle of favorable dispersity.
Embodiment 5: the average minor axis of primary particle be 0.2 micron, the average major diameter of primary particle be mean diameter that 0.4 micron, laser refraction method are measured be 0.6 micron evenly and the grain of rice shape particle of favorable dispersity.
Embodiment 6: the average minor axis of primary particle be 0.2 micron, the average major diameter of primary particle be mean diameter that 0.5 micron, laser refraction method are measured be 0.8 micron evenly and the grain of rice shape particle of favorable dispersity.
(embodiment 7)
Be converted into slaked lime powder (the industrial slaked lime of JIS of our company's system of calcium oxide with respect to 100 weight parts (slaked lime 132 weight parts), special number of slaked lime) adds and mix 30 weight part propylene glycol, toward wherein adding entry, making concentration is 7 weight %, temperature is adjusted to 15 ℃, obtains calcium hydroxide slurry.Then carry out carbonation reaction similarly to Example 1, the result obtains lime carbonate.Can confirm by electron microscope observation, the lime carbonate that obtains be the average minor axis of primary particle be 0.4 micron, the average major diameter of primary particle be mean diameter that 0.6 micron, laser refraction method are measured be 1.0 microns evenly and the grain of rice shape particle of favorable dispersity.
(embodiment 8)
To be that slaked lime powder that the embodiment 7 of 100 weight parts adopts is that the propylene glycol of 80 weight parts is dissolved in and makes in the water with respect to being converted into calcium oxide in advance, slaked lime powder is added wherein, making concentration is 7 weight %, and further adjusting temperature is 15 ℃, obtains calcium hydroxide slurry.Can determine by electron microscope observation, the lime carbonate that obtains be the average minor axis of primary particle be 0.4 micron, the average major diameter of primary particle be mean diameter that 0.8 micron, laser refraction method are measured be 1.3 microns evenly and the grain of rice shape particle of favorable dispersity.
(embodiment 9～10)
Except the flow velocity of carbon dioxide among the embodiment 7～8 is 10 liters/minute. kilogram (Ca (OH)
2) outside, carrying out carbonation reaction with same process, the result obtains lime carbonate.The following record of result with electron microscope observation.
Embodiment 9: the average minor axis of primary particle be 0.2 micron, the average major diameter of primary particle be mean diameter that 0.3 micron, laser refraction method are measured be 0.6 micron evenly and the grain of rice shape particle of favorable dispersity.
Embodiment 10: the average minor axis of primary particle be 0.2 micron, the average major diameter of primary particle be mean diameter that 0.4 micron, laser refraction method are measured be 0.6 micron evenly and the grain of rice shape particle of favorable dispersity.
(comparative example 1～4)
The add-on of ethylene glycol or propylene glycol is the 5 weight % in embodiment 1,4,7,9, carries out carbonation reaction with same process, and with the observable lime carbonate of electron microscope, the result is as follows.
Comparative example 1: the mean diameter that the primary particle median size is 0.5 micron, measure by the laser refraction method be 1.1 microns evenly and the cubic particle of favorable dispersity.
The primary particle median size is to be to adopt the length of electronic caliper to one side of the particle assay particle on any two diagonal lines on 30000 times the electron micrograph in the random shooting multiplying power, with it as particle diameter, ask its mean value, as the primary particle median size.
Comparative example 2: the mean diameter that the primary particle median size is 0.2 micron, measure by the laser refraction method be 0.7 micron evenly and the cubic particle of favorable dispersity.
Comparative example 3: the mean diameter that the primary particle median size is 0.4 micron, measure by the laser refraction method be 0.8 micron evenly and the cubic particle of favorable dispersity.
Comparative example 4: the mean diameter that the primary particle median size is 0.2 micron, measure by the laser refraction method be 0.6 micron evenly and the cubic particle of favorable dispersity.
(comparative example 5～8)
Do not add ethylene glycol or the propylene glycol in embodiment 1,4,7,9, carry out carbonation reaction with same process, with the observable lime carbonate of electron microscope, the result is as follows.
Comparative example 5: the mean diameter that the primary particle median size surpasses 1 micron, measure by the laser refraction method is 3.4 microns a polyhedron particle.
Comparative example 6: the primary particle median size is the aggregate of 4.3 microns gelatinize particle less than 0.1 micron, the mean diameter measured by the laser refraction method.
Comparative example 7: the mean diameter that the primary particle median size surpasses 1 micron, measure by the laser refraction method is 3.1 microns a polyhedron particle.
Comparative example 8: the primary particle median size is the aggregate of 4.0 microns gelatinize particle less than 0.1 micron, the mean diameter measured by the laser refraction method.
Table 1 is expression the foregoing description and the synthesis condition of comparative example and result's table.
Table 1
| Additive | Addition means | Addition [weight %] (being combined as base) with other | The flow of carbon dioxide gas amount [rise/minute. kilogram-Ca (OH) 2] | Primary particle size (electron microscope observation) | Mean diameter [micron] | Shape | |
| Embodiment 1 | Ethylene glycol | Mix with unslaked lime | ????30 | ????4 | Minor axis: 0.4 micron major diameter: 0.6 micron | ????1.0 | Grain of rice shape |
| Comparative example 1 | Ethylene glycol | Mix with unslaked lime | ????5 | ????4 | Particle diameter: 0.5 micron | ????1.1 | Cubic |
| Comparative example 5 | ???- | ???- | ????- | ????4 | Particle diameter:＞1 micron | ????3.4 | Polyhedron |
| Embodiment 2 | Ethylene glycol | Mix with unslaked lime | ????80 | ????4 | Minor axis: 0.4 micron major diameter: 0.8 micron | ????1.2 | Grain of rice shape |
| Embodiment 3 | Ethylene glycol | Mix with unslaked lime | ????150 | ????4 | Minor axis: 0.4 micron major diameter: 1.0 microns | ????1.3 | Grain of rice shape |
| Embodiment 4 | Ethylene glycol | Mix with unslaked lime | ????30 | ????10 | Minor axis: 0.2 micron major diameter: 0.3 micron | ????0.6 | Grain of rice shape |
| Comparative example 2 | Ethylene glycol | Mix with unslaked lime | ????5 | ????10 | Minor axis: 0.2 micron | ????0.7 | Cubic |
| Comparative example 6 | ???- | ???- | ????- | ????10 | Particle diameter＜0.1 micron | ????4.3 | The colloid aggregate |
| Embodiment 5 | Ethylene glycol | Mix with unslaked lime | ????80 | ????10 | Minor axis: 0.2 micron major diameter: 0.4 micron | ????0.6 | Grain of rice shape |
| Embodiment 6 | Ethylene glycol | Mix with unslaked lime | ????150 | ????10 | Minor axis: 0.2 micron major diameter: 0.5 micron | ????0.8 | Grain of rice shape |
| Embodiment 7 | Propylene glycol | Mix with slaked lime | ????30 | ????4 | Minor axis: 0.4 micron major diameter: 0.6 micron | ????1.0 | Grain of rice shape |
| Comparative example 3 | Propylene glycol | Mix with slaked lime | ????5 | ????4 | Particle diameter: 0.4 micron | ????0.8 | Cubic |
| Comparative example 7 | ???- | ???- | ????- | ????4 | Particle diameter:＞1 micron | ????3.7 | Polyhedron |
| Embodiment 8 | Propylene glycol | Mix with adjustment water | ????80 | ????4 | Minor axis: 0.4 micron major diameter: 0.8 micron | ????1.2 | Grain of rice shape |
| Embodiment 9 | Propylene glycol | Mix with slaked lime | ????30 | ????10 | Minor axis: 0.2 micron major diameter: 0.3 micron | ????0.6 | Grain of rice shape |
| Comparative example 4 | Propylene glycol | Mix with unslaked lime | ????5 | ????10 | Particle diameter: 0.2 micron | ????0.6 | Cubic |
| Comparative example 8 | ???- | ???- | ????- | ????10 | Particle diameter＜0.1 micron | ????4.0 | The colloid aggregate |
| Embodiment 10 | Propylene glycol | Mix with adjustment water | ????80 | ????10 | Minor axis: 0.2 micron major diameter: 0.4 micron | ????0.6 | Grain of rice shape |
(application examples)
Adopt pressure filter that the lime carbonate that obtains in embodiment 1,4 and the comparative example 1,5 is carried out processed, obtain the filter cake that solid concentration is 65.5 weight %.Then in this dewatered cake adding to be converted into solid substance be that the dispersion agent of 0.6 weight % carries out dispersion treatment, making solid concentration is the high density carbonic acid calcium slurry of 65.0 weight %.This slurry is used with pigment as applying, in these lime carbonate 100 weight parts, add starch (japanese food processing #4600) 6 weight parts, latex (Japanese synthetic rubber, No. 102) 12 weight parts, printing adaptability rising agent (the eastern chemistry Wet Master-GT360 of nation) 0.75 weight part, anti-hydrated agent (Sumitomo Chemical Sumirez Resin 613) 0.35 weight part and water, make the color compositions that solid concentration is 50.0 weight %, at 65g/m
2Body paper on be 15g/m with every coated weight
2Amount be coated with rod with hand and apply, carry out twice height calender process after, carry out the evaluation of physical property of coated paper.
Table 2 is tables of coated paper rerum natura in the application examples.
Table 2
| Project | Embodiment 1 | Comparative example 1 | Comparative example 5 | Embodiment 4 |
| Blank sheet of paper glossiness (75 °) [%] | ????58.3 | ????50.3 | ????43.6 | ????65.7 |
| Smoothness [micron] | ????0.71 | ????0.82 | ????0.98 | ????0.68 |
| Opaqueness [%] | ????86.1 | ????85.2 | ????83.2 | ????86.4 |
| Hunter whiteness [%] | ????97.1 | ????95.2 | ????95.6 | ????96.7 |
Measuring method
Glossiness: measure according to JIS P8142, numerical value is big more, and gloss is high more
Smoothness: according to Perker print-surf roughness ﹠amp; Porosity testerMODEL PPS78 DIGITALH 20kg/cm
2Measure, 10 average, and numerical value is the smaller the better
Opaqueness: measure according to JIS P8138, numerical value is the bigger the better
Hunter whiteness: the rerum natura of the coated paper of the calcium carbonate slurry that the rerum natura of measuring coated paper that therefore we can say the calcium carbonate slurries that adopt embodiment 1 and 4 preparations according to JIS P8123 and comparative example 1 and 5 obtain is compared, and is good on the whole.
Claims (3)
1. lime carbonate, its primary particle median size is 0.1～0.5 micron, and the average major diameter of primary particle size is 0.15～1.5 micron, and long-width ratio is 1.5～3.0.
2. the lime carbonate of claim 1 record, it is shaped as cylindric that grain of rice shape, shape with a tight waist or angle come off.
3. the manufacture method of a lime carbonate, this method is to react the method for making lime carbonate by calcium hydroxide and carbon dioxide, it is characterized in that with the raw material calcium source that is converted into calcium oxide with respect to 100 weight parts being that the ratio of 20～200 weight parts adds and to have the organic compound of hydroxyl, and carry out carbonation reaction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP303448/1999 | 1999-10-26 | ||
| JP30344899 | 1999-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1327436A true CN1327436A (en) | 2001-12-19 |
| CN1167620C CN1167620C (en) | 2004-09-22 |
Family
ID=17921123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008024111A Expired - Fee Related CN1167620C (en) | 1999-10-26 | 2000-10-17 | Calcium carbonate, and method for producing the same |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20010080481A (en) |
| CN (1) | CN1167620C (en) |
| AU (1) | AU7688100A (en) |
| WO (1) | WO2001030700A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074803A (en) * | 2011-10-25 | 2013-05-01 | 王子控股株式会社 | Matt coated paper for printing |
| CN103184710A (en) * | 2011-12-27 | 2013-07-03 | 王子控股株式会社 | White board paper used for coating |
| CN103539186A (en) * | 2013-09-28 | 2014-01-29 | 昆山市周市溴化锂溶液厂 | Preparation method of fusiform light calcium carbonate |
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| CN109480098A (en) * | 2018-12-29 | 2019-03-19 | 长沙兴嘉生物工程股份有限公司 | Application of the preparation method and hydroxy carbonate calcium of hydroxy carbonate calcium in field of animal feed |
| CN112023871A (en) * | 2020-08-28 | 2020-12-04 | 安徽同益净化科技有限公司 | CO (carbon monoxide)2Method for preparing nano calcite VOCs adsorbent by diffusion method |
| CN113416430A (en) * | 2021-06-29 | 2021-09-21 | 常州碳酸钙有限公司 | Preparation method and application of special nano calcium carbonate for polyurethane sealant |
| CN115057463A (en) * | 2022-06-29 | 2022-09-16 | 广西华纳新材料股份有限公司 | Micron-sized polyhedral calcium carbonate and preparation method thereof |
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| JP2006076828A (en) * | 2004-09-09 | 2006-03-23 | Kyushu Institute Of Technology | Composite of vaterite type crystalline calcium carbonate and starch, recording medium, printed matter, ink jet recording method, and manufacturing method of recording medium |
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| AU2021226345A1 (en) | 2020-02-25 | 2022-09-15 | Arelac, Inc. | Methods and systems for treatment of lime to form vaterite |
| KR20230030619A (en) | 2020-06-30 | 2023-03-06 | 아렐락, 인크. | Methods and systems for forming vaterite from calcined limestone using an electric kiln |
| CN111874933A (en) * | 2020-08-14 | 2020-11-03 | 王权广 | Quick preparation process of rice-grain light calcium carbonate |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4817438B1 (en) * | 1970-12-29 | 1973-05-29 | ||
| JPS59199731A (en) * | 1983-04-27 | 1984-11-12 | Maruo Calcium Kk | Preparation of linearly connected calcium carbonate having high dispersibility |
| JPS59232916A (en) * | 1983-06-16 | 1984-12-27 | Shiraishi Chuo Kenkyusho:Kk | United body of needlelike or columnar calcium carbonate, its manufacture and coating composition for heat sensitive paper containing said united body |
| JP2556706B2 (en) * | 1987-07-14 | 1996-11-20 | 丸尾カルシウム株式会社 | Method for producing calcium carbonate for papermaking |
| JPH01301511A (en) * | 1988-05-31 | 1989-12-05 | Nippon Sekkai Kogyo Kk | Production of spherical calcium carbonate |
| GB2246344A (en) * | 1990-07-27 | 1992-01-29 | Ecc Int Ltd | Precipitated calcium carbonate |
| JPH07197398A (en) * | 1994-11-21 | 1995-08-01 | Okutama Kogyo Kk | Aggregated calcium carbonate and papermaking pigment |
| JP3515658B2 (en) * | 1996-02-01 | 2004-04-05 | 奥多摩工業株式会社 | Calcium carbonate filled paper |
| JPH11157833A (en) * | 1997-11-25 | 1999-06-15 | Yahashi Kogyo Kk | Production of calcium carbonate |
-
2000
- 2000-10-17 KR KR1020017006248A patent/KR20010080481A/en not_active Application Discontinuation
- 2000-10-17 CN CNB008024111A patent/CN1167620C/en not_active Expired - Fee Related
- 2000-10-17 WO PCT/JP2000/007195 patent/WO2001030700A1/en active Application Filing
- 2000-10-17 AU AU76881/00A patent/AU7688100A/en not_active Abandoned
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| CN103074803A (en) * | 2011-10-25 | 2013-05-01 | 王子控股株式会社 | Matt coated paper for printing |
| CN103074803B (en) * | 2011-10-25 | 2016-09-14 | 王子控股株式会社 | Matt coated paper for printing |
| CN103184710A (en) * | 2011-12-27 | 2013-07-03 | 王子控股株式会社 | White board paper used for coating |
| CN103184710B (en) * | 2011-12-27 | 2018-11-20 | 王子控股株式会社 | Coated manila |
| CN103539186A (en) * | 2013-09-28 | 2014-01-29 | 昆山市周市溴化锂溶液厂 | Preparation method of fusiform light calcium carbonate |
| CN103693668A (en) * | 2013-11-28 | 2014-04-02 | 广西华纳新材料科技有限公司 | Granular fine calcium carbonate and preparation method thereof |
| CN103693668B (en) * | 2013-11-28 | 2015-09-16 | 广西华纳新材料科技有限公司 | A kind of Granular fine calcium carbonate and preparation method thereof |
| CN109480098A (en) * | 2018-12-29 | 2019-03-19 | 长沙兴嘉生物工程股份有限公司 | Application of the preparation method and hydroxy carbonate calcium of hydroxy carbonate calcium in field of animal feed |
| CN112023871A (en) * | 2020-08-28 | 2020-12-04 | 安徽同益净化科技有限公司 | CO (carbon monoxide)2Method for preparing nano calcite VOCs adsorbent by diffusion method |
| CN113416430A (en) * | 2021-06-29 | 2021-09-21 | 常州碳酸钙有限公司 | Preparation method and application of special nano calcium carbonate for polyurethane sealant |
| CN115057463A (en) * | 2022-06-29 | 2022-09-16 | 广西华纳新材料股份有限公司 | Micron-sized polyhedral calcium carbonate and preparation method thereof |
| CN115057463B (en) * | 2022-06-29 | 2023-12-29 | 青川华纳新材料有限公司 | Micron-sized polyhedral calcium carbonate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010080481A (en) | 2001-08-22 |
| CN1167620C (en) | 2004-09-22 |
| WO2001030700A1 (en) | 2001-05-03 |
| AU7688100A (en) | 2001-05-08 |
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