Process for preparing high-purity superthin high-whiteness kaolin

A technology of kaolin and whiteness, which is applied in the field of preparation of ultra-fine and high-whiteness kaolin, can solve the problems of low product grade and low technical content, and achieve obvious economic and social benefits.

Inactive Publication Date: 2005-12-07
广州市花都区梯面展鹏高岭土厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of low technical content and low product grade in the existing kaolin preparation methods in our country, reduce import and export, save and make full use of existing resources, and meet the refinement requirements of modern industry for kaolin ultrafine powder as much as possible

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) impurity removal treatment: get 1000 kg of kaolin raw ore and 1000 liters of water to make a slurry, add 1 kg of sodium dithionite and 4 liters of sulfuric acid with a concentration of 98%, and stir for 1 hour at normal temperature;

[0012] (2) Pulverization treatment: Utilize SW-3000 type wet grinder, pump above-mentioned slurry into grinder and grind for 1 hour, add 1 kilogram of sodium dodecyl sulfonate during the grinding process;

[0013] (3) Press cake filtration treatment: adopt X-800 automatic pull plate filter press to separate solid and liquid;

[0014] (4) Drying treatment: use XQ-4 type powerful drying equipment to carry out dry component processing on the filter cake, the inlet temperature of the equipment is controlled to be 270 degrees, the outlet temperature is controlled to be 160 degrees, and the water content of the processed powder is less than 1%;

[0015] (5) Calcination treatment: the powder is placed in a rotary kiln, and the furnace tempera...

Embodiment 2

[0018] (1) impurity removal treatment: get 1000 kilograms of kaolin raw ore and 1000 liters of water to make slurry, add 1 kilogram of sodium dithionite and 5 liters of sulfuric acid with a concentration of 98%, and stir for 1 hour at normal temperature;

[0019] (2) Pulverization treatment: Utilize SW-3000 type wet grinder, pump above-mentioned slurry into grinder and grind for 1 hour, add 1 kilogram of sodium dodecyl sulfonate during the grinding process;

[0020] (3) Press cake filtration treatment: adopt X-800 automatic pull plate filter press to separate solid and liquid;

[0021] (4) Drying treatment: use XQ-4 type powerful drying equipment to carry out dry component processing on the filter cake, the inlet temperature of the equipment is controlled to be 270 degrees, the outlet temperature is controlled to be 160 degrees, and the water content of the processed powder is less than 1%;

[0022] (5) Calcination treatment: the powder is placed in a rotary kiln, and the furn...

Embodiment 3

[0025] (1) impurity removal treatment: get 1000 kg of kaolin raw ore and 1000 liters of water to make a slurry, add 1 kg of sodium dithionite and 4 liters of sulfuric acid with a concentration of 98%, and stir for 1 hour at normal temperature;

[0026] (2) Pulverization treatment: Utilize SW-3000 type wet grinder, pump above-mentioned slurry into grinder and grind for 1.5 hours, add 1 kg of sodium dodecyl sulfonate during the grinding process;

[0027] (3) Press cake filtration treatment: adopt X-800 automatic pull plate filter press to separate solid and liquid;

[0028] (4) Drying treatment: use XQ-4 type powerful drying equipment to carry out dry component processing on the filter cake, the inlet temperature of the equipment is controlled to be 270 degrees, the outlet temperature is controlled to be 160 degrees, and the water content of the processed powder is less than 1%;

[0029] (5) Calcination treatment: the powder is placed in a rotary kiln, and the furnace temperatur...

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Abstract

The invention relates to a process for preparing high-purity superthin high-whiteness kaolin, which comprises (1) removing impurities, (2) disintegration treatment, (3) wafering and filtering treatment, (4) drying treatment, (5) calcinations treatment, (6) naturally annealing, and cooling down at normal temperature.

Description

technical field [0001] The invention relates to a preparation method of superfine high-whiteness kaolin by using kaolin minerals as raw materials. Background technique [0002] my country's kaolin mineral resources and reserves are very rich. Kaolin is an important industrial mineral in non-metallic minerals. It is widely used in many industries such as papermaking, coatings, rubber, ceramics, plastics, chemicals, and medicine. Modern industry has higher and higher requirements for kaolin ultrafine powder, and all require micron, submicron and even nanometer products. In terms of color and whiteness, the requirements are the same as those of high-quality titanium dioxide. The existing kaolin preparation methods in my country mainly include wet impurity removal and water washing separation method, ball milling method, and Raymond milling method. These methods all have a common defect, that is, the technical content is not high and the product grade is low, which leads to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/04
Inventor 尹荔松张秋振
Owner 广州市花都区梯面展鹏高岭土厂
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