CN101875793A - 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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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
Lime carbonate is filler for plastic the most frequently used at present, that consumption is maximum.And calcium carbonate superfine powder is because the particle super-refinement, its crystalline structure and surface 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, reducing enterprise's production cost significantly, is the good weighting agent of plastics processing.
The true value that coarse whiting is used is its deep processed product, promptly ultra-fine, high-purity, surface modified product, and the coarse whiting product purity height of wet production, 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 broad application 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 lime carbonate coarse fodder of diameter≤1 centimetre;
(2), the lime 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 takes collection out of via the air port at last, 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 after 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, by pulverizing, dry and classification, at last by the fly-ash separator collecting packing with 20Kg/h.
Among the present invention, grinding medium is the compound pearl of zirconium aluminium, and dispersion agent is a sodium polyacrylate, and activator is a 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 lime carbonate coarse fodder of diameter≤1 centimetre;
(2), the coarse grain after broken is sent into raymond mill by bobbing machine and is ground with jaw, wind by blast inlet blows afloat finished product materials again, through inner separator the thickness powder is separated then, at last take collection out of by the air port via wind by grinding machine, 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 after 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 with the speed of 20Kg/h at opening for feed, by pulverize, dry and classification, by the fly-ash separator collecting packing, output is designed to 2000Kg/h at last.
Wherein, grinding medium is the compound pearl of zirconium aluminium, and the dispersion agent of adding is a sodium polyacrylate, and activator is a 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 lime carbonate coarse fodder of diameter≤1 centimetre;
(2), the lime carbonate coarse fodder being sent into raymond mill by bobbing machine grinds, wind by blast inlet blows afloat finished product materials again, through inner separator the thickness powder is separated then, at last take collection out of by the air port via wind by grinding machine, 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 after 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 with the speed of 20Kg/h at opening for feed, by pulverize, dry and classification, by the fly-ash separator collecting packing, output is designed to 2000Kg/h at last.
Can adopt circulate the continuously method of wet grinding of tandem to improve the fineness of product, 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 the compound pearl of zirconium aluminium, and the dispersion agent of adding is a sodium polyacrylate, and activator is a 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 lime carbonate coarse fodder of diameter≤1 centimetre;
(2), the lime 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 takes collection out of via the air port at last, 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 after 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, by pulverizing, dry and classification, at last by the fly-ash separator collecting packing with 20Kg/h.
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 the compound pearl of zirconium aluminium.
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 a 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 a stearic acid.
5. the production method of superfine modified heavy calcium carbonate by wet grinding according to claim 1, it is characterized in that: dry 8 temperature are 280 ℃.
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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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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102950055A (en) * | 2012-10-19 | 2013-03-06 | 宁波市联成机械有限责任公司 | Wet grinding manufacturing method and device of calcium carbonate size |
| CN102977642A (en) * | 2012-11-28 | 2013-03-20 | 东南新材料股份有限公司 | Production method of superfine modified ground calcium carbonate by wet grinding |
| CN103232732A (en) * | 2013-05-02 | 2013-08-07 | 潍坊飞龙功能碳酸钙科技有限公司 | Preparation method of superfine modified ground limestone |
| CN103331203A (en) * | 2013-05-27 | 2013-10-02 | 金东纸业（江苏）股份有限公司 | Wet-grinding and material-feeding system and method thereof |
| CN103756365A (en) * | 2013-12-04 | 2014-04-30 | 芜湖卓越纳米新材料有限公司 | Surface treatment method for nanometer calcium carbonate |
| CN104053728A (en) * | 2011-10-25 | 2014-09-17 | 伊梅里斯矿物有限公司 | Particulate fillers |
| 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 |
| CN104448942A (en) * | 2014-12-08 | 2015-03-25 | 平桂管理区望高湘桂造纸厂 | Method for preparing ultrafine ground calcium carbonate for filling in papermaking |
| CN104479414A (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 plastic film superfine heavy calcium carbonate |
| CN104480784A (en) * | 2014-12-08 | 2015-04-01 | 平桂管理区望高湘桂造纸厂 | Preparation method of paper coating superfine ground calcium carbonate |
| 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 |
| CN104610779A (en) * | 2014-12-31 | 2015-05-13 | 李安平 | Preparation method of polyethylene glycol modified ground calcium carbonate powder |
| CN104744971A (en) * | 2015-03-04 | 2015-07-01 | 江西科越科技有限公司 | Preparation process of wet-process superfine modified calcium carbonate |
| CN104845411A (en) * | 2015-05-29 | 2015-08-19 | 四川石棉巨丰粉体有限公司 | Superfine ground calcium carbonate powder production method |
| CN105366703A (en) * | 2015-12-08 | 2016-03-02 | 四川亿欣新材料有限公司 | Production method of food-grade calcium carbonate |
| CN105366702A (en) * | 2015-12-08 | 2016-03-02 | 四川亿欣新材料有限公司 | Production method of pharmaceutical-grade calcium carbonate |
| CN105399130A (en) * | 2015-12-08 | 2016-03-16 | 四川亿欣新材料有限公司 | Production technology of ground limestone |
| CN106009778A (en) * | 2016-06-11 | 2016-10-12 | 江西广源化工有限责任公司 | Preparation method for special highlight anti-impact ultrafine powder used for shells of household electrical appliances |
| 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 |
| CN107345871A (en) * | 2017-06-30 | 2017-11-14 | 广西贺州市科隆粉体有限公司 | A kind of calcium carbonate material quality detection method |
| 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 |
| CN109759210A (en) * | 2018-12-12 | 2019-05-17 | 东升新材料（山东）有限公司 | A kind of device and method being used to prepare wet grinding calcium carbonate |
| 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 |
| 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 |
| 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 |
| 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 |
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| CN104053728A (en) * | 2011-10-25 | 2014-09-17 | 伊梅里斯矿物有限公司 | Particulate fillers |
| CN104053728B (en) * | 2011-10-25 | 2016-07-06 | 伊梅里斯矿物有限公司 | Granulated filler |
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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 |
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| CN107345871B (en) * | 2017-06-30 | 2020-06-19 | 广西贺州市科隆粉体有限公司 | Calcium carbonate raw material quality detection method |
| 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 |
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