CN101544852B - A method for manufacturing modified extra fine heavy calcium carbonate powder - Google Patents
A method for manufacturing modified extra fine heavy calcium carbonate powder Download PDFInfo
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- CN101544852B CN101544852B CN2009100391428A CN200910039142A CN101544852B CN 101544852 B CN101544852 B CN 101544852B CN 2009100391428 A CN2009100391428 A CN 2009100391428A CN 200910039142 A CN200910039142 A CN 200910039142A CN 101544852 B CN101544852 B CN 101544852B
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- calcium carbonate
- heavy calcium
- carbonate powder
- extra fine
- fine heavy
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Abstract
The invention relates to a method for manufacturing modified extra fine heavy calcium carbonate powder; polyglycol and water are evenly mixed according to a mass ratio of 1:1 to get fluid A which is added from an inlet orifice of a muller and enters the muller together with coarse fodder entering the muller; the coarse fodder is continuously grinded to be fine, ceaselessly mixed to be even with the fluid A, and evenly wrapped simultaneously; wrapped modified extra fine heavy calcium carbonate powder is separated after entering a grader through wind, thus obtaining modified extra fine heavy calcium carbonate powder. The modified extra fine heavy calcium carbonate of the invention not only ensures retaining of characteristics of modified extra fine heavy calcium carbonate powder, but can improve lipophilicity, wettability and disperse stability of powder body. After applied to a latex system, the modified extra fine heavy calcium carbonate powder obtained by the invention can improve hydrophobic mature of a dope system, rinse resistant times, high shear viscosity of a latex system, construction property, and reduce dosage of moistening dispersant and foam suppressor in the meanwhile.
Description
Technical field
The present invention relates to a kind of a kind of polyglycol surfactants that coats on extra fine heavy calcium carbonate powder surface, produce a kind of method of modified extra fine heavy calcium carbonate powder.
Background technology
In coating material production, all to use the nonmetalliferous ore powder, filler such as calcined kaolin, Paris white for example, lime carbonate is indispensable a kind of filler in formulation for coating material, what usage ratio had in formulation for coating material very reaches 20～30%.Extra fine heavy calcium carbonate powder is to get by dry grinding classification manufacturing, in manufacture course of products, design by production technique, for example add grinding aid and to the classification of product multiple tracks, product fineness can reach median size 0.5～5 μ m, these manufacturing technologies are the grinding classification technique of product eventually, and prepared product function has limitation.Be used for coating system, can only play filling effect, can not improve the hydrophobicity of coating system, can not improve the washability number of times of coating, can not improve the high-shear viscosity of coating system, can not reduce the consumption of wetting dispersing agent and defoamer, not satisfy coating industry and reduce production costs, improve the requirement of coating property.
Summary of the invention
Purpose of the present invention just provides a kind of polyglycol surfactants disperses to be coated on the extra fine heavy calcium carbonate powder surface, produces the method for modified extra fine heavy calcium carbonate powder.
The present invention can realize in the following manner: a kind of manufacture method of modified extra fine heavy calcium carbonate powder, (1) with 100 mass parts calcites of diameter≤20 centimetre drop into jaw broken in after the fragmentation, it is broken broken to enter hammer, obtains the lime carbonate coarse fodder of diameter≤5 millimeter; (2) polyoxyethylene glycol and water are stirred by mass ratio at 1: 1, get A liquid; (3) lime carbonate coarse fodder and 0.2～2.0 mass parts A liquid are entered in the shredder simultaneously, grinding and making particle diameter is 0.1～100 micron modified heavy calcium carbonate powder; (3) the modified heavy calcium carbonate powder is delivered to sorting in the grading machine by the air quantity of 3100～3300 cubic meters per minute, the grading machine frequency is 25～41 hertz, makes particle diameter and be 0.1～20 micron modified extra fine heavy calcium carbonate powder.
Modified extra fine heavy calcium carbonate powder of the present invention has not only kept the characteristics of extra fine heavy calcium carbonate powder, can improve lipophilicity, wettability and the dispersion stabilization of powder.The modified extra fine heavy calcium carbonate powder that the present invention makes is applied to the latex system, can improve the hydrophobicity of coating system, improves the washability number of times, improves the high-shear viscosity of latex system, improves workability, reduces the consumption of wetting dispersing agent and defoamer simultaneously.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but it is not represented as unique embodiment of the present invention.
Embodiment one
It is broken broken that diameter is put into jaw continuously less than 10 tons of calcites of 20 centimetres, and the finger stone after the fragmentation enters the broken fragmentation of hammer, obtains less than 5 millimeters lime carbonate coarse fodder and enter in the coarse fodder storehouse; Above the shredder inlet, set up a tank, in tank, add 10 kilograms polyoxyethylene glycol and 10 kilograms pure water, one agitator is installed in tank, make polyoxyethylene glycol and water mix, below tank, connect a rate of flow meter that has switch, rate of flow meter is used for controlling and showing the flow of polyoxyethylene glycol and water mixed liquid, and the rate of flow meter below links to each other with water pipe, and water pipe is that the mixed solution through rate of flow meter is incorporated into the shredder ingress; The lime carbonate coarse fodder converges at shredder feed entrance place with the mixed solution of 10 kilograms of polyoxyethylene glycol and 10 kg water through blanking machine uniformly mutually, merging enters in the shredder simultaneously, at shredder chamber lime carbonate meal constantly by porphyrize, and constantly mix with mixed solution, fully evenly be coated on the Paris white surface until mixed solution, making particle diameter is 0.1～100 micron modified heavy calcium carbonate powder, flows out from the shredder discharge port; The modified heavy calcium carbonate powder is sent to sorting in the grading machine by the air quantity of 3300 cubic meters per minute, the grading machine frequency is 25 hertz, make particle diameter and be 0.1～20 micron modified extra fine heavy calcium carbonate powder, return the coarse fodder storehouse again, recycle greater than 20 microns modified superfine coarse whiting Paris whites.
Embodiment two
It is broken broken that diameter is put into jaw continuously less than 10 tons of calcites of 20 centimetres, and the finger stone after the fragmentation enters the broken fragmentation of hammer, obtains less than 5 millimeters lime carbonate coarse fodder and enter in the coarse fodder storehouse; Above the shredder inlet, set up a tank, in tank, add the polyoxyethylene glycol of double centner and the pure water of double centner, one agitator is installed in tank, make polyoxyethylene glycol and water mix, below tank, connect a rate of flow meter that has switch, rate of flow meter is used for controlling and showing the flow of polyoxyethylene glycol and water mixed liquid, and the rate of flow meter below links to each other with water pipe, and water pipe is that the mixed solution through rate of flow meter is incorporated into the shredder ingress; The lime carbonate coarse fodder converges at shredder feed entrance place with the mixed solution of double centner polyoxyethylene glycol and double centner water through blanking machine uniformly mutually, merging enters in the shredder simultaneously, at shredder chamber lime carbonate meal constantly by porphyrize, and constantly mix with mixed solution, fully evenly be coated on the Paris white surface until mixed solution, making particle diameter is 0.1～100 micron modified heavy calcium carbonate powder, flows out from the shredder discharge port; The modified heavy calcium carbonate powder is sent to sorting in the grading machine by the air quantity of 3100 cubic meters per minute, the grading machine frequency is 41 hertz, make particle diameter and be 0.1～5 micron modified extra fine heavy calcium carbonate powder, return the coarse fodder storehouse again, recycle greater than 5 microns modified superfine coarse whiting Paris whites.
The applicant is through repetition test, and the polyoxyethylene glycol of screening and water mix by mass ratio at 1: 1, and the addition that gets A liquid is 0.2～2.0%.If addition is higher than this scope: grinding effect is undesirable, can produce and stick with paste mill, increase production cost simultaneously.If addition is less than this scope: the modified heavy calcium carbonate powder is used for coating system, to improving the hydrophobicity of coating system, improve the washability number of times, the performance of high-shear viscosity that improves the latex system is not obvious, can not reduce the consumption of wetting dispersing agent and defoamer in the coating system
After testing: modified extra fine heavy calcium carbonate powder is used for coating system, the thickening material consumption reduces 6%; The wetting agent consumption reduces 50%; The defoamer consumption reduces 50%; Coating scrubbing resistance number of times increases by 500 times.
Claims (1)
1. the manufacture method of a modified extra fine heavy calcium carbonate powder is characterized in that:
(1) 100 mass parts calcites of diameter≤20 centimetre are dropped into jaw broken in after the fragmentation, it is broken to enter hammer, obtains the lime carbonate coarse fodder of diameter≤5 millimeter;
(2) polyoxyethylene glycol and water are stirred by mass ratio at 1: 1, get A liquid;
(3) lime carbonate coarse fodder that step (1) is obtained and 0.2～2.0 mass parts A liquid enter in the shredder, and grinding and making particle diameter is 0.1～100 micron modified calcium carbonate powder;
(4) the modified calcium carbonate powder that step (3) is obtained is delivered to sorting in the grading machine by the air quantity of 3100～3300 cubic meters per minute, and 25～41 hertz of grading machine frequencies make particle diameter and be 0.1～20 micron modified superfine Paris white.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100391428A CN101544852B (en) | 2009-05-04 | 2009-05-04 | A method for manufacturing modified extra fine heavy calcium carbonate powder |
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| CN2009100391428A CN101544852B (en) | 2009-05-04 | 2009-05-04 | A method for manufacturing modified extra fine heavy calcium carbonate powder |
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| CN101544852A CN101544852A (en) | 2009-09-30 |
| CN101544852B true CN101544852B (en) | 2010-08-18 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101775237B (en) * | 2010-01-29 | 2012-11-14 | 大连友兰企业集团有限公司 | Method for processing coupled superfinely ground and heavy calcium carbonates |
| CN103772747B (en) * | 2012-10-22 | 2016-04-13 | 中国石油化工股份有限公司 | Cross-linking type organic polymer-calcium carbonate composite particles and preparation method thereof |
| CN103289448A (en) * | 2013-03-14 | 2013-09-11 | 河南工业大学 | Preparation method of ultrawhite, easily dispersible and high stability powder special for water-based paint |
| CN104910646A (en) * | 2014-07-04 | 2015-09-16 | 池州市富华粉体科技有限公司 | Preparation method for wet ground heavy calcium carbonate |
| CN104403369A (en) * | 2014-11-26 | 2015-03-11 | 甘振辉 | Preparation method for acrylic copolymer ground calcium carbonate ultrafine powder |
| CN104403372A (en) * | 2014-12-08 | 2015-03-11 | 广西利升石业有限公司 | Dry-process preparation method of superfine heavy calcium carbonate |
| CN104987752A (en) * | 2014-12-31 | 2015-10-21 | 李安平 | Acrylic acid copolymer heavy calcium carbonate ultra-fine powder production method |
| CN105524442A (en) * | 2015-12-17 | 2016-04-27 | 梅庆波 | Method for preparing unsaturated polyester composite material filled with modified calcium carbonate |
| CN107502003B (en) * | 2016-06-14 | 2020-06-02 | 中国科学院理化技术研究所 | Preparation method of hydrophobic inorganic powder material |
| CN106431043B (en) * | 2016-09-13 | 2018-11-02 | 广西大学 | Strengthen the method using dual-functional group modifier modification lime stone under a kind of microwave field |
| CN108102432A (en) * | 2017-12-19 | 2018-06-01 | 广福建材（蕉岭）精化有限公司 | A kind of manufacturing method of active superfine calcium carbonate powder |
| CN109796789B (en) * | 2019-03-22 | 2020-07-28 | 内蒙古牧星人新材料科技有限公司 | Production process for calcium carbonate powder |
| CN111302374A (en) * | 2020-03-20 | 2020-06-19 | 惠州荣联华橡塑有限公司 | Preparation method of active superfine calcium carbonate powder |
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