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Beneficiation method for coal series kleit

A technology of coal-based kaolin and ore dressing method, which is applied to centrifuges with rotating drums, centrifuges, etc., can solve problems such as production stoppage, slow sales, poor grade of raw ore, etc., achieve large processing capacity, improve purity, and reduce iron and titanium The effect of content

Inactive Publication Date: 2008-09-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in recent years, calcined kaolin manufacturers in this area have been continuously established, including dry and wet production, but most of them are poor in product quality due to poor raw ore grade and ineffective beneficiation, resulting in slow sales or successive suspension of production.

Method used

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  • Beneficiation method for coal series kleit
  • Beneficiation method for coal series kleit
  • Beneficiation method for coal series kleit

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] 50Kg of coal series kaolin powder in Yichang area (mechanically ground to 700-800 mesh), water and sodium hexametasulfate in a mass ratio of 1:5:0.004 to make a slurry, after strong stirring, with a pressure of 0.6MPa Enter a hydrocyclone with a pipe diameter of 25 mm for classification. After 10 minutes, the classification is completed, and the underflow waste ore and overflow concentrate pulp are obtained, which are dehydrated and dried respectively. The test data are shown in Table 1.

[0038] Table 1 Example 1 test results

[0039]

example 2

[0041] 50Kg of coal series kaolin powder (700-800 mesh) in Yichang area, water and sodium hexametasulfate are mixed into a slurry with a mass ratio of 1:3.3:0.004, and after strong stirring, enter the pipe with a pressure of 0.6MPa. The 25mm hydrocyclone is used for classification. After 10 minutes, the classification is completed, and the underflow waste ore and overflow concentrate pulp are obtained, which are dehydrated and dried respectively. The test data are shown in Table 2.

[0042] Table 2 Example 2 Test Results

[0043]

example 3

[0045] 50Kg of coal series kaolin powder (700-800 mesh) in Yichang area, water and sodium hexametasulfate are mixed into a slurry with a mass ratio of 1:2.5:0.004, and after strong stirring, enter the pipe with a pressure of 0.6MPa. The 25mm hydrocyclone was used for classification. After a few minutes, the classification was completed, and the underflow waste ore and overflow concentrate pulp were obtained, which were dehydrated and dried respectively. The test data are shown in Table 3.

[0046] Table 3 Example 3 Test Results

[0047]

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Abstract

The invention relates to a beneficiation method of coal-series kaolin, which is characterized in that the coal-series kaolin is crushed into 700 mu or more, then is added with water to make ore slurry with concentration ranging from 20 percent to 40 percent; then a dispersing agent, namely sodium hexametahposphate is added and stirred for uniform mixing; then the mixed solution is graded in a hydrocyclone; in this way, the concentrate ore slurry is separated from the mixed solution. At last, concentrate ore slurry is centrifugated, dehydrated and dried, thereby obtaining the coal-series kaolin with high purity. By adopting the hydrocyclone for the grading and beneficiation of the coal-series kaolin, the method can effectively remove heavy minerals in the coal-series kaolin, and can significantly reduce the content of Fe2O3 and TiO2, and the treatment volume is large; therefore, the method is particularly suitable for beneficiation purification of coal-series kaolin and iron, titanium impurities in the mineral content of the large kaolin which is rich in impurities, such as iron and titanium. The concentrate ore calcined products can be used in fields of high-grade ceramics, paint, paper making, etc.

Description

technical field [0001] The invention relates to a method for reselecting impurities in graded coal series kaolin with a hydrocyclone, belonging to the field of non-metallic ore beneficiation. technical background [0002] Coal-measure kaolin mainly exists in the roof and floor of coal seams and gangue in coal seams, and coexists with coal. It is one of the non-metallic mineral resources with double advantages in reserves and quality in my country, and has huge development and utilization value. The proven prospective reserves of coal-measure kaolin in my country are as high as 18 billion tons, which greatly exceeds the sum of the world's proven kaolin reserves (16.7 billion tons). Coal-measure kaolin is mainly distributed in the Carboniferous-Permian coal-measures in the northeast and northwest of northern my country. The kaolinite content in coal-measure kaolin in many areas is greater than 98%, such as Shanxi Datong, Huairen, Shuozhou, Hunyuan, Inner Mongolia Zhungeer, Wud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04B1/00
Inventor 陈洁渝严春杰王焰新韩利雄朱小燕
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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