CN101830494B - Method for preparing active calcium carbonate by taking gypsum as raw material - Google Patents
Method for preparing active calcium carbonate by taking gypsum as raw material Download PDFInfo
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- CN101830494B CN101830494B CN 201010172205 CN201010172205A CN101830494B CN 101830494 B CN101830494 B CN 101830494B CN 201010172205 CN201010172205 CN 201010172205 CN 201010172205 A CN201010172205 A CN 201010172205A CN 101830494 B CN101830494 B CN 101830494B
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- calcium carbonate
- gypsum
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- dihydrate solid
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Abstract
The invention provides a method for preparing active calcium carbonate by taking gypsum as raw material, comprising the following concrete steps of: regulating the weight ratio of calcium sulfate dihydrate solid in gypsum to liquid water to be 100:0.3-40 by adding water or evaporating water; adding a calcium carbonate activating agent until the weight ratio of the calcium sulfate dihydrate solid to the calcium carbonate activating agent is 100:1.0-2.5; adding ammonium bicarbonate until the weight ratio of the calcium sulfate dihydrate solid to the ammonium bicarbonate is 100:92-106; evenly mixing; milling for 5-12 hours at the room temperature; washing sediments with water and then drying to obtain an active calcium carbonate product the grain diameter of which is 0.2-5mu m. The method adopts phosphorous gypsum, desulfurized gypsum and citric acid gypsum of industrial by-products as raw materials and has the obvious characteristics of comprehensive resources utilization and low production cost.
Description
Technical field:
The present invention relates to a kind of preparation method of activated Calcium carbonate.
Background technology:
Activated Calcium carbonate is a kind of novel ultrafine solids material that grows up in the later stage eighties, now has been widely used in the Industrial products such as rubber, plastics, papermaking, coating, printing ink as mineral filler.Light calcium carbonate suitability for industrialized production main method is to feed CO in the milk of lime
2It is prepared that gas carries out carburizing reagent, and activated processing obtains calcene again.
China's industry byproduct phosphogypsum, desulfurated plaster, citric acid gypsum and fluorgypsum increase year by year at present, cause accumulation owing to fail to be fully used always, become the huge industry of China's quantity and one of give up admittedly.These gypsum are developed, have the significance of comprehensive utilization of resources and environment protection.
Summary of the invention:
With gypsum (citric acid gypsum, or desulfurated plaster, or phosphogypsum) is raw material, to regulate the mass ratio of calcium sulphate dihydrate solid and liquid water be 100 by adding water or transpiring moisture: 0.3-40, add calcium carbonate activator (stearic acid, metatitanic acid fat, aluminic acid lipoprotein, one or two or more kinds mixing use in phosphoric acid fat and the silane coupling agent) mass ratio to calcium sulphate dihydrate solid and calcium carbonate activator is 100: 1.0-2.5, adding bicarbonate of ammonia to the mass ratio of calcium sulphate dihydrate solid and bicarbonate of ammonia is 100: 92-106, mix, grind 5-12h under the room temperature, adding water stirs, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 0.2-5 micron active carbonic acid calcium product, obtains ammonium sulfate solids behind the filtrate evaporative crystallization.
Embodiment:
Example one:
Get desulfurated plaster (deriving from Jian Bi power station, Zhengjiang City, Jiangsu Province) 100 grams, the gypsum water content is that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 6, make by transpiring moisture that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 0.3 in the gypsum, add titanic acid ester 1.0 grams, add bicarbonate of ammonia 100 grams, mix, grind 12h under the room temperature, add water and stir, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 0.2-0.6 micron active carbonic acid calcium product.Obtain ammonium sulfate solids behind the filtrate evaporative crystallization.
Example two:
Get citric acid gypsum (deriving from Shandong Rizhao Jinhe Boyuan Biochemistry Co., Ltd) 100 grams, the gypsum water content is that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 28, add stearic acid 1.3 grams, add bicarbonate of ammonia 80 grams, mix, grind 7h under the room temperature, add water and stir, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 2-4 micron active carbonic acid calcium product.Obtain ammonium sulfate solids behind the filtrate evaporative crystallization.
Example three:
Get citric acid gypsum (deriving from Anhui rich former Ma'an Mountain biochemistry corporation,Ltd.) 100 grams, the gypsum water content is that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 37, add water and make that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 40 in the gypsum, add silane coupling agent 1.8 grams, add bicarbonate of ammonia 67 grams, mix, grind 5h under the room temperature, add water and stir, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 3-5 micron active carbonic acid calcium product.Obtain ammonium sulfate solids behind the filtrate evaporative crystallization.
Example four:
Get phosphogypsum (deriving from Tongling, Anhui non-ferrous metal group) 100 grams, the gypsum water content is that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 14, make by transpiring moisture that the mass ratio of calcium sulphate dihydrate solid and liquid water is 100: 10 in the gypsum, add aluminic acid ester 1.0 grams and stearic acid 0.7 gram, add bicarbonate of ammonia 88 grams, mix, grind 9h under the room temperature, add water and stir, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 0.7-2 micron active carbonic acid calcium product.Obtain ammonium sulfate solids behind the filtrate evaporative crystallization.
Claims (3)
1. one kind is the method for feedstock production activated Calcium carbonate with the gypsum, it is characterized in that carrying out as follows: be raw material with the gypsum, to regulate the mass ratio of calcium sulphate dihydrate solid and liquid water be 100 by adding water or transpiring moisture: 0.3-40, adding calcium carbonate activator to the mass ratio of calcium sulphate dihydrate solid and calcium carbonate activator is 100: 1.0-2.5, adding bicarbonate of ammonia to the mass ratio of calcium sulphate dihydrate solid and bicarbonate of ammonia is 100: 92-106, mix, grind 5-12h under the room temperature, adding water stirs, filter, wash throw out to filtrate with water and use BaCl
2The no white precipitate of solution check with drying precipitate, obtains particle diameter 0.2-5 micron active carbonic acid calcium product, obtains ammonium sulfate solids behind the filtrate evaporative crystallization.
2. require in the 1 described activated Calcium carbonate preparation method step according to letter of authorization, used gypsum raw material is citric acid gypsum, desulfurated plaster or phosphogypsum.
3. require in the 1 described activated Calcium carbonate preparation method step according to letter of authorization, used calcium carbonate activator is that one or two or more kinds mixing in stearic acid, titanic acid ester, aluminic acid ester, phosphoric acid ester and the silane coupling agent is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172205 CN101830494B (en) | 2010-05-11 | 2010-05-11 | Method for preparing active calcium carbonate by taking gypsum as raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172205 CN101830494B (en) | 2010-05-11 | 2010-05-11 | Method for preparing active calcium carbonate by taking gypsum as raw material |
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| Publication Number | Publication Date |
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| CN101830494A CN101830494A (en) | 2010-09-15 |
| CN101830494B true CN101830494B (en) | 2013-08-21 |
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| CN 201010172205 Expired - Fee Related CN101830494B (en) | 2010-05-11 | 2010-05-11 | Method for preparing active calcium carbonate by taking gypsum as raw material |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983924B (en) * | 2010-11-24 | 2012-02-08 | 鲁东大学 | Method for preparing calcium carbonate with controllable topography by using calcium sulfate |
| CN102275967B (en) * | 2011-07-22 | 2013-05-15 | 陈琳 | Method for preparing nanometer calcium carbonate by using sintered desulfurated ash residues as raw materials |
| CN102701256B (en) * | 2012-07-05 | 2013-11-13 | 中化化肥有限公司重庆磷复肥工程技术研究中心 | Method for preparing granular ammonium sulfate and calcium carbonate by chemical gypsums via low-temperature transformation |
| CN102976410B (en) * | 2012-11-13 | 2014-04-09 | 湖南柿竹园有色金属有限责任公司 | Comprehensive utilization method of gypsum containing tungsten and fluorine |
| CN104945955B (en) * | 2014-10-16 | 2017-11-17 | 湖南瑞石科技发展有限公司 | A kind of modified calcium sulfate anti-corrosion paint and its production and use |
| CN104876252A (en) * | 2015-04-14 | 2015-09-02 | 华东理工大学 | Method for preparing calcium carbonate by using ammonia carbonization-calcium conversion two-step method through low-temperature conversion |
| CN105329928A (en) * | 2015-12-10 | 2016-02-17 | 湖南化工职业技术学院 | Activation method for nanometer calcium carbonate |
| CN105967214B (en) * | 2016-06-24 | 2018-02-02 | 张文凯 | A kind of preparation method of spherical nanometer calcium carbonate |
| CN108084491A (en) * | 2017-12-11 | 2018-05-29 | 常州碳酸钙有限公司 | A kind of preparation method of functional calcium carbonate |
| CN107892319A (en) * | 2017-12-11 | 2018-04-10 | 常州碳酸钙有限公司 | A kind of preparation method of subparticle calcium carbonate |
| CN110819137B (en) * | 2019-11-25 | 2021-06-18 | 四川亿欣新材料有限公司 | Modification device and modification method for calcium-based powder special for adhesive |
| CN113023758A (en) * | 2021-03-19 | 2021-06-25 | 浙江浙能技术研究院有限公司 | Method for synthesizing calcium carbonate from desulfurized gypsum through solid-phase grinding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101602A (en) * | 1988-03-22 | 1988-12-28 | 福建师范大学 | With the Al-system coupling agent is the new type active calcium carbonate of properties-correcting agent |
| CN1258640A (en) * | 1998-12-30 | 2000-07-05 | 湖南化工研究院 | Gypsum process of producing potassium sulfate and cement |
| CN1438178A (en) * | 2002-12-31 | 2003-08-27 | 上海大学 | Method for preparing nano active calcium carbonate |
| CN101045544A (en) * | 2007-04-26 | 2007-10-03 | 安徽工业大学 | Method for preparing superthin light calcium carbonate using plaster as raw material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118222A2 (en) * | 2004-05-28 | 2005-12-15 | Cargill, Incorporated | Phosphogypsum treatment process |
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2010
- 2010-05-11 CN CN 201010172205 patent/CN101830494B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101602A (en) * | 1988-03-22 | 1988-12-28 | 福建师范大学 | With the Al-system coupling agent is the new type active calcium carbonate of properties-correcting agent |
| CN1258640A (en) * | 1998-12-30 | 2000-07-05 | 湖南化工研究院 | Gypsum process of producing potassium sulfate and cement |
| CN1438178A (en) * | 2002-12-31 | 2003-08-27 | 上海大学 | Method for preparing nano active calcium carbonate |
| CN101045544A (en) * | 2007-04-26 | 2007-10-03 | 安徽工业大学 | Method for preparing superthin light calcium carbonate using plaster as raw material |
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| CN101830494A (en) | 2010-09-15 |
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