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Clay ore desiliconisation method

A clay ore desiliconization technology, applied in the field of clay ore desiliconization, can solve the problems of not meeting the raw material requirements of the sintering method, low dissolution rate, etc.

Inactive Publication Date: 2007-07-11
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The aluminum-silicon ratio of clay ore is about 1, which cannot meet the raw material requirements of the sintering method
Use it to extract Al directly by sintering 2 o 3 , due to the SiO 2 The high content makes Al 2 o 3 Dissolution rate is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First, crush the clay ore to below 105 μm, and roast it at 900°C for 0.5h. The roasted clay ore was reacted with NaOH solution with a mass concentration of 15% at 80° C. for 1 h, the liquid-solid ratio was 20 mL / g, and the aluminum-silicon ratio of the obtained product was 4.1.

[0015] Example 2μ

[0016] First, crush the clay ore to below 105μm, and roast it at 950°C for 0.5h. The roasted clay ore was reacted with 18% NaOH solution at 90° C. for 1.5 h, the liquid-solid ratio was 25 mL / g, and the aluminum-silicon ratio of the obtained product was 4.6.

Embodiment 3

[0018] First, crush the clay ore to below 105μm, and roast it at 1000°C for 0.5h. The roasted clay ore was reacted with 20% NaOH solution at 95° C. for 2 hours, the liquid-solid ratio was 30 mL / g, and the aluminum-silicon ratio of the obtained product was 4.3.

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PUM

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Abstract

The invention discloses a utilizing method of clay mineral source, which is characterized by the following: sintering clay with NaOH; removing silicon; transmitting SiO2 in the clay into non-crystal pattern to react easily for alkaline; keeping inert property for aluminium; improving the Al / Si rate of clay.

Description

technical field [0001] A method for desiliconization of clay ore relates to a method for resource utilization of clay ore. Background technique [0002] Clay is the dominant resource in my country. The types and varieties of clay ore in my country are complete, and the deposits are widely distributed, mainly in Shanxi, Henan, Hebei, Shandong, Guizhou, Liaoning, Inner Mongolia, Jilin and Hubei and other provinces. [0003] The main use of clay is to make refractory materials. The refractory material made of refractory clay has the characteristics of high refractoriness, good thermal stability, acid and alkaline slag resistance, rich resources, traditional application experience, simple process and low production cost, so the application range is the most wide, the most varieties, the largest dosage. [0004] With the rapid development of my country's alumina industry, the demand for bauxite is increasing. If the clay ore with abundant reserves can be developed as the raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B3/12
CPCY02P10/20
Inventor 周吉奎李军亮曹慧军李花霞
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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