CN101735669A - Method for enhancing oil absorption of calcined kaolin - Google Patents
Method for enhancing oil absorption of calcined kaolin Download PDFInfo
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- CN101735669A CN101735669A CN200910272931A CN200910272931A CN101735669A CN 101735669 A CN101735669 A CN 101735669A CN 200910272931 A CN200910272931 A CN 200910272931A CN 200910272931 A CN200910272931 A CN 200910272931A CN 101735669 A CN101735669 A CN 101735669A
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- calcined kaolin
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- oil absorption
- calcium chloride
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Abstract
The invention discloses a method for enhancing oil absorption of calcined kaolin, which is implemented by putting calcined kaolin powder with granularity being less than or equal to 10 mu m and anhydrous calcium chloride powder with granularity being less than or equal to 10 mu m in a reaction vessel with the mass of added anhydrous calcium chloride powder being 2-5% of that of calcined kaolin powder, adequately agitating at constant temperature ranging from 80 DEG C to 300 DEG C. By using the inventive method, the oil absorption of calcined kaolin is enhanced from 69-72ml/100g to 78.5-83.5ml/100g, no adverse influence on physical performances of calcined kaolin such as whiteness, dispersibility, water-solubility and the like is exerted, and the method is simple and easy to implement, is low in cost and causes no pollution to the environment.
Description
Technical field
The present invention relates to a kind of method that improves oil absorption of calcined kaolin, belong to paint field.
Background technology
The titanium dioxide that is widely used in the high-grade paint field costs an arm and a leg because of it, and each state is all at the numerous and confused product that replaces it of exploring.More existing at present developed countries adopt kaolin to come the instead of titanium white powder, are applied to the high-grade paint field.The kaolin that is applied to the high-grade paint field generally has the feature that whiteness is good, oil number is high.Though and the kaolin whiteness of China processing is better, oil number is generally lower, and dispersed relatively poor in oil, can not satisfy the requirement in high-grade paint field, causes kaolin that China is used for high-grade paint field dependence on import always.
The Coaseries kaolin purity height (kaolinite content＞95%) of China, good, the easy exploitation of quality, distribution are the valuable sources of kaolin ore extensively.China's calcined kaolin generally adopts Coaseries kaolin to be prepared from through calcining, and the kaolin whiteness after calcining can reach more than 90%, stable performance, but oil absorbency is generally lower.And there is complex process in past contact, the problem that equipment has high input.At present, domestic each kaolin enterprise can make oil number increase to 69-72ml/100g, but still can't satisfy the requirement in high-grade paint field by regulating processing methodes such as calcining temperature and control product cut size to improve the oil number of calcined kaolin.Thereby, realize the breakthrough of prior art, improve the oil absorbency of calcined kaolin, make it to be applied to the high-grade paint field, be the important subject of China's kaolin deep process technology.
Summary of the invention
The objective of the invention is to remedy the deficiencies in the prior art, a kind of method that improves oil absorption of calcined kaolin is provided, adopt this method can make the oil number of calcined kaolin reach 78.5～83.50ml/100g, and technology is simple, input cost is low, is easy to suitability for industrialized production.
The technical scheme that realizes the object of the invention is: a kind of method that improves oil absorption of calcined kaolin, this method is that the Calcium Chloride Powder Anhydrous powder with the calcined kaolin powder of granularity≤10 μ m and granularity≤10 μ m places reaction vessel, the Calcium Chloride Powder Anhydrous powder that adds is 2%～5% of a calcined kaolin powder quality, fully stirs in 80～300 ℃ of constant temperature then.
The Calcium Chloride Powder Anhydrous powder that adds in the aforesaid method is 2% of a calcined kaolin powder quality.
Be fully to stir in the aforesaid method in 150 ℃ of constant temperature.
The constant temperature churning time is 1～3 hour in the aforesaid method.
The present invention has following advantage and beneficial effect:
1. make the oil number of calcined kaolin be increased to 78.5～83.50ml/100g.
2. the present invention is with low cost, and the cost that increases per ton is 8～15 yuan.
3. the present invention is simple, is easy to suitability for industrialized production.
4. the inventive method has no adverse effects to the whiteness of calcined kaolin, dispersiveness, physicals such as water-soluble.
5. the present invention is raw materials used nontoxic, environmentally safe.
Embodiment
The invention will be further described below by specific embodiment, but that protection scope of the present invention is not limited to is following
Embodiment.
Used calcined kaolin is the serial kaolin of white snow that Tangshan Madison kaolin limited liability company is produced in following examples, and its oil number is 70ml/100g.The test of oil number is all according to State Standard of the People's Republic of China UDC 667.662.667.61: the mensuration GB 5211.15-88 of oil absorption of pigment carries out.
Embodiment 1
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.6g places Erlenmeyer flask altogether, place 80 ℃ oil bath constant temperature stirring (fully to stir and get final product in 1 hour then, the general stirring 1～3 hour), obtain product.After tested, the oil number of product is 79.0ml/100g.
Embodiment 2
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.6g places Erlenmeyer flask altogether, place 130 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 80.0ml/100g.
Embodiment 3
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.4g places Erlenmeyer flask altogether, place 150 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 83.5ml/100g.
Embodiment 4
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.6g places Erlenmeyer flask altogether, place 130 ℃ oil bath constant temperature to stir then 3 hours, obtain product.After tested, the oil number of product is 78.5ml/100g.
Embodiment 5
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.6g places Erlenmeyer flask altogether, place 300 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 81.0ml/100g.
Embodiment 6
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 1.0g places Erlenmeyer flask altogether, place 100 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 80.0ml/100g.
Embodiment 7
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.8g places Erlenmeyer flask altogether, place 300 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 80.0ml/100g.
Embodiment 8
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.8g places Erlenmeyer flask altogether, place 250 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 80.0ml/100g.
Embodiment 9
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 1.0g places Erlenmeyer flask altogether, place 200 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 79.0ml/100g.
Embodiment 10
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 0.6g places Erlenmeyer flask altogether, place 150 ℃ oil bath constant temperature to stir then 2 hours, obtain product.After tested, the oil number of product is 80.0ml/100g.
Embodiment 11
Take by weighing calcined kaolin powder (granularity≤10 μ m) 20g and Calcium Chloride Powder Anhydrous powder (granularity≤10 μ m) 1.0g places Erlenmeyer flask altogether, place 100 ℃ oil bath constant temperature to stir then 1 hour, obtain product.After tested, the oil number of product is 80.0ml/100g.
Claims (4)
1. method that improves oil absorption of calcined kaolin, it is characterized in that the calcined kaolin powder of granularity≤10 μ m and the Calcium Chloride Powder Anhydrous powder of granularity≤10 μ m are placed container, the Calcium Chloride Powder Anhydrous powder that adds is 2%～5% of a calcined kaolin powder quality, fully stirs in 80～300 ℃ of constant temperature then.
2. the method for raising oil absorption of calcined kaolin according to claim 1 is characterized in that: the Calcium Chloride Powder Anhydrous powder of described adding is 2% of a calcined kaolin powder quality.
3. the method for raising oil absorption of calcined kaolin according to claim 1 is characterized in that: be fully to stir in 150 ℃ of constant temperature.
4. according to the method for claim 1 or 3 described raising oil absorption of calcined kaolin, it is characterized in that: described constant temperature churning time is 1～3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102729316A CN101735669B (en) | 2009-11-26 | 2009-11-26 | Method for enhancing oil absorption of calcined kaolin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102729316A CN101735669B (en) | 2009-11-26 | 2009-11-26 | Method for enhancing oil absorption of calcined kaolin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101735669A true CN101735669A (en) | 2010-06-16 |
| CN101735669B CN101735669B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102729316A Expired - Fee Related CN101735669B (en) | 2009-11-26 | 2009-11-26 | Method for enhancing oil absorption of calcined kaolin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491356A (en) * | 2011-11-30 | 2012-06-13 | 唐山麦迪逊高岭土有限公司 | Preparation method of calcined kaolin with high oil absorption |
| CN103980739A (en) * | 2014-04-15 | 2014-08-13 | 芜湖同达新材料科技有限公司 | Multiple modified ultrafine non-metal powder partially replacing titanium dioxide powder, and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505957A (en) * | 1979-07-19 | 1985-03-19 | Nordson Corporation | Coating by atomization of high (i.e., about 70-99% by weight) solids film-forming compositions |
| CN1195701C (en) * | 2002-09-28 | 2005-04-06 | 内蒙古三保高岭土有限公司 | Treatment and production technique for calcining kaolin |
| CN1847146A (en) * | 2006-04-30 | 2006-10-18 | 中国地质大学（北京） | Method of raising oil absorption rate of coal-bearing kaolin |
-
2009
- 2009-11-26 CN CN2009102729316A patent/CN101735669B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491356A (en) * | 2011-11-30 | 2012-06-13 | 唐山麦迪逊高岭土有限公司 | Preparation method of calcined kaolin with high oil absorption |
| CN102491356B (en) * | 2011-11-30 | 2013-04-10 | 唐山麦迪逊高岭土有限公司 | Preparation method of calcined kaolin with high oil absorption |
| CN103980739A (en) * | 2014-04-15 | 2014-08-13 | 芜湖同达新材料科技有限公司 | Multiple modified ultrafine non-metal powder partially replacing titanium dioxide powder, and preparation method thereof |
| CN103980739B (en) * | 2014-04-15 | 2015-11-18 | 芜湖同达新材料科技有限公司 | A kind of part replaces multiple modified ultra-fine non-metallic powder of titanium dioxide and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101735669B (en) | 2012-05-30 |
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Granted publication date: 20120530 Termination date: 20121126 |