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Production method of toothpaste-grade heavy calcium carbonate

A technology of heavy calcium carbonate and a production method, which is applied in the field of calcium carbonate, can solve the problems of difficult control of heavy metals and microbial indicators, and many harmful substances, and achieves the effects of low heavy metal and microbial indicators, high whiteness, and high output rate.

Inactive Publication Date: 2012-08-22
JIANDE LONGHUA PLASTIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional heavy calcium carbonate production is difficult to control heavy metals and microbial indicators, and there are many harmful substances such as heavy metals and microorganisms

Method used

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  • Production method of toothpaste-grade heavy calcium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The production method of this toothpaste grade ground calcium carbonate, the method comprises steps as follows:

[0020] (1) For the initial beneficiation, after the ore arrives at the factory, the fixed-point sampling method is used to detect the whiteness, main content, iron content and other items of the ore. Generally, the whiteness is required to be 97%, and the main content is 99.5%-100.5%. Iron content ≤ 200ppm, select high-quality ore raw materials;

[0021] (2) One-time cleaning, the ore raw materials that pass the test enter the primary washing machine for cleaning, and initially wash off the impurities such as yellow mud and gravel adhering to it;

[0022] (3) Mineral beneficiation again, the ore after the first cleaning must be piled into the designated storage place, the place must be free from pollution and bacteria growth, keep clean and tidy, and then carry out manual beneficiation. At the same time, remove the yellow skin attached to the calcite, and p...

Embodiment 2

[0027] Embodiment 2: the difference from Example 1 is: in the grinding step, add 0.01% of the rare earth material of the ore raw material weight, the rare earth material is one or more of lanthanum, cerium, praseodymium, neodymium, add a trace amount of rare earth material, Make the product quality more stable, and can play a role in degrading toxic substances to a certain extent.

[0028] Table 1 Comparison of physical and chemical indicators of calcium carbonate

[0029]

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Abstract

The invention relates to a production method of toothpaste-grade heavy calcium carbonate. The method comprises the following steps: (1) performing primary beneficiation, and selecting ore raw materials; (2) performing primary cleaning, and enabling the ore raw materials detected to be qualified to enter a primary ore-washing machine to perform cleaning; (3) performing secondary beneficiation, picking out blended stone in the ore raw materials, and simultaneously removing yellow skins adhered to calcite; (4) using disinfectant fluid to perform secondary disinfection washing to the ore raw materials; (5) airing ores, controlling indoor temperature of ore-airing areas to be 30 DEG C, controlling the humidity to be 40%, and controlling ore-airing time to be within 24h; (6) grinding, controlling feeding frequency, classification frequency, classification current, host machine current and fan current parameter indexes of equipment according to different mesh requirements of products; and (7) packaging and entering a warehouse. The production method has the advantages that the produced heavy calcium carbonate is good in stability of chemical property, high in purity and uniform in size distribution and has a complete crystal structure, and harmful components such as heavy metals and microorganisms are few.

Description

technical field [0001] The invention relates to the field of calcium carbonate, and mainly relates to a production method of toothpaste-grade heavy calcium carbonate. Background technique [0002] Ground calcium carbonate is an inorganic chemical product with a wide range of uses. The product has natural ingredients without any chemical additives. It is an important friction agent and calcium nutrition enhancer, and is widely used in the field of toothpaste. All kinds of brand toothpaste produced by the world's top 500 companies Procter & Gamble use heavy calcium carbonate as raw material. Traditional heavy calcium carbonate production is difficult to control heavy metals and microbial indicators, and there are many harmful substances such as heavy metals and microorganisms. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technology, and provide a kind of production method of toothpaste grade h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18
Inventor 翁国华翁鸣饶英龙瞿小明潘爱珍
Owner JIANDE LONGHUA PLASTIC CHEM
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