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Method for purifying kaolin

A purification method and kaolin technology are applied in the field of purification and preparation of kaolin, can solve problems such as non-conformity, insignificant improvement of kaolin whiteness, water quality and environmental pollution, etc., and achieve whiteness improvement, simple and convenient purification method and low cost Effect

Inactive Publication Date: 2017-06-23
揭阳恒成陶瓷科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used kaolin purification methods are chemical methods of pickling and bleaching, which do not significantly improve the whiteness of kaolin, and at the same time cause serious pollution to water quality and the environment, which does not conform to the development concept of the existing market.

Method used

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  • Method for purifying kaolin

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.

[0020] The kaolin raw ore is firstly selected to remove large impurity minerals, then the raw ore is coarsely crushed and finely crushed, and then passed through a 100-mesh sieve. The washed kaolin mud is input into the classification tank for classification to remove fine sand.

[0021] Put the mud into the slurry storage tank for washing, then adjust the mud concentration to 70-75 degrees Baume meter, pump it into the imported ball mill for fast ball milling, and the high-alumina ball mills in the ball mill must be proportioned according to the following gradation: large : Medium: Small = 2:5:3. After the mud is ball-milled, pass through a 400-mesh sieve, then dilute it, add an appropriate amount of special high-dispersion agent to fully disperse the pseudo-particles, separate the kaolin particles fro...

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Abstract

The invention discloses a method for purifying kaolin. The method comprises the following steps: crushing selected kaolin raw ore, passing through a 100-mesh sieve, removing crude mineral particles through a waterdriven sheller and washing, performing pulp washing and superfine grinding on the washed kaolin particles, passing through a 400-mesh sieve, diluting the sieved kaolin, adding a proper amount of specially prepared high dispersing agents, completely dispersing the kaolin particles, removing iron from slurry by a high-strength magnetic separator to enable the ferric oxide content of the kaolin to be less than 0.1 percent, sieving, dehydrating and drying to obtain a finished product. The method is simple in process, low in cost and suitable for industrialized promotion, the firing whiteness of the purified kaolin can be increased by above 35 to 40 degrees, and the product quality is effectively improved; moreover, relative to purification by a chemical method, pollution to water quality and environment is avoided.

Description

technical field [0001] The invention relates to the field of non-metallic mineral processing, in particular to a new method for purifying and preparing kaolin. Background technique [0002] Mineral resources are non-renewable, and high-quality mineral resources are extremely scarce. With the continuous expansion of the application field of inorganic minerals, the demand for high-quality inorganic mineral powders is also increasing. Therefore, it is of great significance to improve the quality of low-quality inorganic mineral raw materials through purification. At present, there are many application fields and industries of inorganic mineral powder. For example, it can be added to some raw materials to increase its chemical stability, prolong its service life, and increase the special properties and effects of its surface; inorganic mineral powder modified by coupling agent Powder, can increase the plasticity and tensile strength of thermoplastic and thermosetting resins, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/04C04B33/10C04B35/626C03C1/02
CPCC04B33/04C03C1/022C04B33/10C04B35/62605C04B35/6261
Inventor 陈瑶武
Owner 揭阳恒成陶瓷科技有限公司
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