Method for preparing kaoline

A technology of kaolin and kaolin ore, applied in chemical instruments and methods, aluminum silicate, silicate and other directions, can solve the problems of high viscosity concentration, restricting the popularization and application of kaolin, unfavorable catalyst or cracking agent use, etc.

Active Publication Date: 2010-08-11
茂名市茂群高岭土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as the application in the petrochemical field is concerned, the kaolin in most mining areas usually has a high viscosity concentration and high fluidity. Generally, the viscosity concentration of these kaolin products is between 67% and 70%, which is not conducive to being used as petroleum. The use of catalysts or cracking agents in the chemical industry greatly restricts the popularization and application of kaolin in the petrochemical industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of kaolin preparation method, comprises the following steps:

[0032] Step 1: Mining to remove impurities, excavating loose kaolin mineral materials, and preliminarily separating clay and impurities to obtain kaolin base materials.

[0033] Step 2, pulping and desanding, the kaolin base material is pulped and desanded to obtain the primary kaolin slurry.

[0034] In step 2, pulping and desanding include the following specific steps:

[0035] (21) Initially remove sand, impact the kaolin base material with a water gun to obtain primary kaolin slurry, then transport it to the sand tank for preliminary separation and desanding, obtain first-grade kaolin slurry, the concentration of the first-grade kaolin slurry is 7% to 10 %, the first-grade kaolin slurry is transported to the slurry storage tank for precipitation, and the second-grade kaolin slurry is obtained, and the concentration of the second-grade kaolin slurry is 14% to 20%, and then enters step (22);

[00...

Embodiment 2

[0043] A kind of kaolin preparation method, comprises the following steps:

[0044] Step 1: Mining to remove impurities, excavating loose kaolin mineral materials, and preliminarily separating clay and impurities to obtain kaolin base materials.

[0045] Step 2, pulping and desanding, the kaolin base material is pulped and desanded to obtain the primary kaolin slurry.

[0046] In step 2, pulping and desanding include the following specific steps:

[0047](21) Initially remove sand, impact the kaolin base material with a water gun to obtain primary kaolin slurry, and then transport it to the sand tank for preliminary separation and desanding to obtain first-grade kaolin slurry. The concentration of the first-grade kaolin slurry is 8.5%. After the first-grade kaolin slurry is transported to the slurry storage tank for precipitation, the second-grade kaolin slurry is obtained, and the concentration of the second-grade kaolin slurry is 16%, and then enters step (22);

[0048] (2...

Embodiment 3

[0055] In order to make the product prepared by the kaolin preparation method of the present invention have a better viscosity concentration, the kaolin of the present invention is prepared by using the following high-speed mixing tank for kaolin for better stirring effect.

[0056] A high-speed stirring tank for processing kaolin is provided with a motor, a transmission, a stirring shaft, a bracket and a slurry storage tank.

[0057] The bracket is connected and arranged on the slurry storage tank body, and the stirring shaft is supported and fixed by the bracket, so that one end of the stirring shaft is connected with the transmission shaft, and the other end of the stirring shaft is placed in the slurry storage tank body.

[0058] The output shaft of the transmission is connected with the stirring shaft outside the slurry tank through a coupling, the motor is arranged on the upper part of the transmission, and the output shaft of the motor is connected with the input shaft o...

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PUM

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Abstract

The invention provides a method for preparing kaoline. The method comprises the following steps: mining impurity removal, in which, soft kaoline mineral aggregate is extracted, clay and impurities are primarily separated to obtain a base material; pulping and grit removal, in which, the base material is subjected to pulping and grit removal to obtain an ore pulp primary material; chemical bleaching, in which, the ore pulp primary material is delivered to a high-speed stirring tank for pulp storage, sulfuric acid solution and sodium hydrosulfite solution are added to the high-speed stirring tank, wherein the mass ratio of the sulfuric acid solution to the ore pulp primary material is 0.3:100-0.8:100 and the mass ratio of the sodium hydrosulfite solution to the kaoline ore pulp primary material is 0.6:100-1.0:100, and the mixed solution with the pH value of between 2.0 and 3.0 is adjusted, and is stirred at the speed of between 140 and 180 revolution/minute for 40 to 45 minutes to prepare an ore pulp concentrated material; cleaning and dehydration, in which, the ore pulp concentrated material is subjected to circulated cleaning and dehydration to prepare an ore pulp finished material; and the ore pulp finished material is dried to prepare powder, and is filtered and dehydrated to prepared a kaoline filter cake, and the kaoline filter cake is crushed and collected after the kaoline filter cake is dried to prepare the kaoline finished product. The kaoline prepared by the method has the viscosity content of about 52 percent, and is suitable for making catalyst or cracking agent.

Description

technical field [0001] The invention relates to a kaolin treatment technology, in particular to a kaolin preparation method for reducing the viscosity concentration of the kaolin. Background technique [0002] At present, kaolin has been widely used in various fields in our production and life. Usually pure kaolin has high whiteness, soft quality, easy to disperse and suspend in water, good plasticity and high cohesiveness, excellent electrical insulation properties; and also has good resistance to acid solubility and low cation exchange capacity , good fire resistance and other physical and chemical properties. Therefore, kaolin has become a necessary mineral raw material in many industries such as papermaking, ceramics, rubber, chemical industry, paint, medicine and national defense. Especially in recent years, with the rapid development of modern science and technology, the application of kaolin has a wider prospect, and a large number of high-tech fields have begun to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26B01J21/16
Inventor 李勇华
Owner 茂名市茂群高岭土有限公司
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