CN101875793B - Production method for superfine modified heavy calcium carbonate by wet grinding - Google Patents
Production method for superfine modified heavy calcium carbonate by wet grinding Download PDFInfo
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- CN101875793B CN101875793B CN 201010179897 CN201010179897A CN101875793B CN 101875793 B CN101875793 B CN 101875793B CN 201010179897 CN201010179897 CN 201010179897 CN 201010179897 A CN201010179897 A CN 201010179897A CN 101875793 B CN101875793 B CN 101875793B
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Abstract
The invention relates to a production method for superfine modified heavy calcium carbonate by wet grinding, which mainly comprises the following steps of: 1) adding calcite into a jaw crusher to obtain crushed coarse grains; 2) feeding the crushed coarse grains by using a vibrating machine into a flour mill for grinding, collecting and performing tons of packaging; 3) uniformly mixing the ton-packaged primary finished product, water and a dispersing agent in a slurry tank; 4) beating the slurry into a wet stirring mill by using a pump valve, adding the dispersing agent again, grinding, filtering by using a sieve, flowing from a discharge hole, and collecting in a storage tank; and 5) beating the slurry in the storage tank into a crushing drier, adding an activating agent, crushing, drying, grading, collecting by a dust collector, and packaging. The production method has the advantages that the yield is high, the product has high whiteness, good purity, uniform size distribution, soft color and stable chemical compositions, and the quality of the product reaches the leading level at home and abroad.
Description
Technical field
The present invention relates generally to the superfine heavy calcium carbonate field, mainly is a kind of production method of superfine modified heavy calcium carbonate by wet grinding.
Background technology
Calcium carbonate is the present maximum filler for plastic of the most frequently used, consumption.And calcium carbonate superfine powder is because the particle super-refinement, its crystalline structure and Electronic Structure are changed, has the property that ordinary calcium carbonate does not have, thereby can be filled at high proportion in the plastics, when guaranteeing even improving quality of item, decrease enterprise production cost is the good weighting agent of plastics processing.
The true value that coarse whiting is used is its deep processed product, i.e. ultra-fine, high-purity, surface modified product, and the coarse whiting product purity of wet production is high, fine size and evenly, good, the steady quality of particle shape, reached the purpose of product deep processing, therefore, the wet grinding coarse whiting has widely prospect.By the wet grinding superfine heavy calcium carbonate is carried out surface modification, to reduce its surface polarity and specific surface energy, reunite thereby reduce, improve the affinity of calcium carbonate particles and organic polymer, improve the activation rate of product.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, and a kind of production method of superfine modified heavy calcium carbonate by wet grinding is provided.
The present invention solves the technical scheme that its technical problem adopts: the production method of this superfine modified heavy calcium carbonate by wet grinding may further comprise the steps:
(1), the calcite of diameter≤20 centimetre is added in the jaw crusher, obtain the calcium carbonate coarse fodder of diameter≤1 centimetre;
(2), the calcium carbonate coarse fodder sent into pulverizing mill by bobbing machine grind, the wind by blast inlet blows afloat finished product materials again, then the thickness powder is separated, and finally by taking collection out of by the air port, carries out ton and packs;
(3), the first finished product of ton packing sling through driving to feed intake, and is mixed with solid content and is 70%～72% slurry, adds to account for the dispersion agent that stock quality percentage ratio is 2.0%-2.1%, the first finished product of ton packing and water and dispersion agent mixing are in slurry pool;
(4), by pump valve slurry is squeezed into wet method and stirs disintegrating machine, add again and account for the dispersion agent that the stock quality mark is 0.9%-1.0%, in grinding medium, grind by screen filtration, flow out and be collected in the storage tank by discharge port;
(5), the slurry in the above-mentioned storage tank is squeezed in the breaking drier by pump valve, at the speed adding activator of opening for feed with 20Kg/h, by pulverizing, dry and classification, at last by the fly-ash separator collecting packing.
Among the present invention, grinding medium is zirconium aluminium composite bead, and dispersion agent is sodium polyacrylate, and activator is stearic acid.
Among the present invention, drying temperature is preferably 280 ℃.
The effect that the present invention is useful is: the size distribution of superfine modified heavy calcium carbonate by wet grinding of the present invention is more even than common superfine heavy calcium carbonate, the reduction of its surface polarity and specific surface energy, reunite thereby reduce, improve the affinity of calcium carbonate particles and organic polymer, improve the activation rate of product.
Embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1: the production method of this superfine modified heavy calcium carbonate by wet grinding, wet grinding and product modification are merged well, and mainly may further comprise the steps:
(1), diameter≤20 centimetre clean dried calcite and drop into jaw crusher after, obtain the calcium carbonate coarse fodder of diameter≤1 centimetre;
(2), the coarse grain after jaw is broken is sent into raymond mill by bobbing machine and is ground, wind by blast inlet blows afloat finished product materials again, then through inner separator the thickness powder is separated, finally by taking collection by the wind by grinding machine out of by the air port, carry out the ton packing, this intermediates fineness is 400 orders;
(3), the first finished product of ton packing sling through driving (hoisting machinery) to feed intake, and is mixed with solid content and is 70% slurry, adds that to account for the stock quality mark be 2.0% dispersion agent, the first finished product of ton packing and water and dispersion agent mixing are in slurry pool;
(4), by pump valve slurry is squeezed into wet method and stirs disintegrating machine, add again that to account for the stock quality mark be 1.0% dispersion agent, in grinding medium, grind by screen filtration, flow out and be collected in the storage tank by discharge port;
(5), the slurry in the above-mentioned storage tank is squeezed in the breaking drier by pump valve, add activator at opening for feed with the speed of 20Kg/h, by pulverize, dry and classification, at last by the fly-ash separator collecting packing, yield design is 2000Kg/h.
Wherein, grinding medium is zirconium aluminium composite bead, and the dispersion agent of adding is sodium polyacrylate, and activator is stearic acid, and drying temperature is 280 ℃, and the built-in grading function of breaking drier.
Embodiment 2:
The production method of this superfine modified heavy calcium carbonate by wet grinding merges wet grinding and product modification well, mainly may further comprise the steps:
(1), diameter≤20 centimetre clean dried calcite and drop into jaw crusher after, obtain the calcium carbonate coarse fodder of diameter≤1 centimetre;
(2), the calcium carbonate coarse fodder being sent into raymond mill by bobbing machine grinds, wind by blast inlet blows afloat finished product materials again, then through inner separator the thickness powder is separated, finally by taking collection by the wind by grinding machine out of by the air port, carry out the ton packing, this intermediates fineness is 400 orders;
(3), the first finished product of ton packing sling through driving (hoisting machinery) to feed intake, and is mixed with solid content and is 72% slurry, adds that to account for the stock quality mark be 2.1% dispersion agent, the first finished product of ton packing and water and dispersion agent mixing are in slurry pool;
(4), by pump valve slurry is squeezed into wet method and stirs disintegrating machine, add again that to account for the stock quality mark be 0.9% dispersion agent, in grinding medium, grind by screen filtration, flow out and be collected in the storage tank by discharge port;
(5), the slurry in the above-mentioned storage tank is squeezed in the breaking drier by pump valve, add activator at opening for feed with the speed of 20Kg/h, by pulverize, dry and classification, at last by the fly-ash separator collecting packing, yield design is 2000Kg/h.
Can adopt the fineness of the method raising product of tandem continuous circulation wet grinding, through test, stir disintegrating machine through wet method and once grind, the finished product fineness can reach 3000 orders, and through twice grinding of connecting, the finished product fineness can reach 5000 orders.
Wherein, grinding medium is zirconium aluminium composite bead, and the dispersion agent of adding is sodium polyacrylate, and activator is stearic acid, and drying temperature is 280 ℃, and the built-in grading function of breaking drier.
In addition to the implementation, all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (5)
1. the production method of a superfine modified heavy calcium carbonate by wet grinding is characterized in that: may further comprise the steps:
(1), the calcite of diameter≤20 centimetre is added in the jaw crusher, obtain the calcium carbonate coarse fodder of diameter≤1 centimetre;
(2), the calcium carbonate coarse fodder sent into pulverizing mill by bobbing machine grind, the wind by blast inlet blows afloat finished product materials again, then the thickness powder is separated, and finally by taking collection out of by the air port, carries out ton and packs;
(3), the first finished product of ton packing sling through driving to feed intake, and is mixed with solid content and is 70%～72% slurry, adds to account for the dispersion agent that stock quality percentage ratio is 2.0%-2.1%, mixing is in slurry pool;
(4), by pump valve slurry is squeezed into wet method and stirs disintegrating machine, add again and account for the dispersion agent that the stock quality mark is 0.9%-1.0%, in grinding medium, grind by screen filtration, flow out and be collected in the storage tank by discharge port;
(5), the slurry in the above-mentioned storage tank is squeezed in the breaking drier by pump valve, at the speed adding activator of opening for feed with 20Kg/h, by pulverizing, dry and classification, at last by the fly-ash separator collecting packing.
2. the production method of superfine modified heavy calcium carbonate by wet grinding according to claim 1, it is characterized in that: grinding medium is zirconium aluminium composite bead.
3. the production method of superfine modified heavy calcium carbonate by wet grinding according to claim 1, it is characterized in that: described dispersion agent is sodium polyacrylate.
4. the production method of superfine modified heavy calcium carbonate by wet grinding according to claim 1, it is characterized in that: described activator is stearic acid.
5. the production method of superfine modified heavy calcium carbonate by wet grinding according to claim 1, it is characterized in that: drying temperature is 280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010179897 CN101875793B (en) | 2010-05-20 | 2010-05-20 | Production method for superfine modified heavy calcium carbonate by wet grinding |
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| CN 201010179897 CN101875793B (en) | 2010-05-20 | 2010-05-20 | Production method for superfine modified heavy calcium carbonate by wet grinding |
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| CN101875793A CN101875793A (en) | 2010-11-03 |
| CN101875793B true CN101875793B (en) | 2013-04-10 |
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| CN102351230A (en) * | 2011-07-06 | 2012-02-15 | 湖南磊鑫新材料科技有限公司 | Preparation method of ultrafine active heavy calcium carbonate |
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| CN102977642B (en) * | 2012-11-28 | 2014-02-05 | 东南新材料股份有限公司 | Production method of superfine modified ground calcium carbonate by wet grinding |
| CN103232732B (en) * | 2013-05-02 | 2014-06-25 | 潍坊飞龙功能碳酸钙科技有限公司 | Preparation method of superfine modified ground limestone |
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| CN104448943A (en) * | 2014-12-08 | 2015-03-25 | 广西利升石业有限公司 | Method for preparing superfine ground calcium carbonate by using wet process |
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| CN104479413A (en) * | 2014-12-09 | 2015-04-01 | 广西贺州弘任机械节能科技有限公司 | Preparation method of coating superfine heavy calcium carbonate |
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| CN106433220A (en) * | 2016-08-22 | 2017-02-22 | 江西广源化工有限责任公司 | Preparation method of modified superfine calcium carbonate powder and product of preparation method |
| CN106957538A (en) * | 2017-04-17 | 2017-07-18 | 华东理工大学 | A kind of preparation method of ultra-fine coating calcium carbonate slurry |
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| CN108948790A (en) * | 2018-05-10 | 2018-12-07 | 桂林永福恒达实业有限公司 | A kind of method of wet-process modified super fine calcium carbonate |
| CN109759210B (en) * | 2018-12-12 | 2021-09-21 | 东升新材料（山东）有限公司 | Device and method for preparing wet-process ground calcium carbonate |
| CN111068884A (en) * | 2019-12-18 | 2020-04-28 | 云南驰宏国际锗业有限公司 | Method for applying ultrasonic technology in production of germanium-based catalyst |
| CN111019399A (en) * | 2019-12-23 | 2020-04-17 | 泾县苏皖纳米碳酸钙有限公司 | Calcium powder production material special for MS glue and production method thereof |
| CN112592090A (en) * | 2021-01-16 | 2021-04-02 | 张家界恒亮新材料科技有限公司 | Method for preparing tile adhesive heavy calcium filler by using stone tailings |
| CN112574598A (en) * | 2021-01-25 | 2021-03-30 | 广西华纳新材料科技有限公司 | Method for increasing specific surface area of heavy calcium carbonate |
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| CN1161996A (en) * | 1996-04-09 | 1997-10-15 | 中国制浆造纸工业研究所 | Super-fine-ground calcium carbonate for paper-making and production method thereof |
Non-Patent Citations (1)
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| 冯平仓.微细研磨重质碳酸钙加工工艺研究.《非金属矿》.1997,(第115期),第47-51页. * |
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