Method for industrially preparing aluminum hydroxide, alumina and aluminum fluoride from andalusite sericite phyllite as raw material

A technology of aluminum hydroxide and andalusite, which is applied in the direction of aluminum fluoride, alumina/hydroxide preparation, aluminum halide, etc., can solve the problem of unusable ore and achieve the elimination of grinding process, simple process and low cost Effect

Inactive Publication Date: 2010-06-02
福建天筑新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to propose a method for producing aluminum hydroxide, aluminum oxide and aluminum fluoride with andalusite sericite phyllite as raw material, which solves the problem of false andalusite—sericite in Qingliu County, Sanming City, Fujian Province. The problem that the phyllite mine cannot be used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Step 1: Pelletizing

[0071] Using a pulverizer to crush the andalusite sericite phyllite ore to below 0.1 mm to obtain sericite phyllite powder;

[0072] Use a crusher to crush the limestone ore to less than 0.1mm to obtain limestone powder;

[0073] Sericite phyllite powder, limestone powder and sodium carbonate are put into the pelletizing machine to make pellets with a particle size of 40mm;

[0074] Dosage: Add 30g of limestone powder and 5g of sodium carbonate to 100g of sericite phyllite powder;

[0075] The second step: pulping

[0076] Calcining the pellets prepared in the first step in a rotary kiln at a temperature of 1250°C for 60 minutes to obtain a calcined material;

[0077] Then the calcined material is moved out of the kiln with the rotation of the rotary kiln and enters the ball mill, and tap water is added to obtain the sericite phyllite slurry;

[0078] Dosage: Add 500ml of tap water to 100g of roasting material;

[0079] The third step: impurit...

Embodiment 2

[0100] Step 1: Pelletizing

[0101] Using a pulverizer to crush the andalusite sericite phyllite ore to below 0.1 mm to obtain sericite phyllite powder;

[0102] Use a crusher to crush the limestone ore to less than 0.1mm to obtain limestone powder;

[0103] Put sericite phyllite powder, limestone powder and sodium carbonate into the pellet machine to make pellets with a particle size of about 20mm;

[0104] Dosage: Add 40g of limestone powder and 7g of sodium carbonate to 100g of sericite phyllite powder;

[0105] The second step: pulping

[0106] Calcining the pellets prepared in the first step in a rotary kiln at a temperature of 1300°C for 40 minutes to obtain a calcined material;

[0107] Then the calcined material is moved out of the kiln with the rotation of the rotary kiln and enters the ball mill, and tap water is added to obtain the sericite phyllite slurry;

[0108] Dosage: Add 400ml of tap water to 100g of roasting material;

[0109] The third step: impurity r...

Embodiment 3

[0130] Step 1: Pelletizing

[0131] Using a pulverizer to crush the andalusite sericite phyllite ore to below 0.1 mm to obtain sericite phyllite powder;

[0132] Use a crusher to crush the limestone ore to less than 0.1mm to obtain limestone powder;

[0133] Sericite phyllite powder, limestone powder and sodium carbonate are put into the pelletizing machine to obtain pellets with a particle size of 60mm;

[0134] Dosage: Add 35g of limestone powder and 3g of sodium carbonate to 100g of sericite phyllite powder;

[0135] The second step: pulping

[0136] Calcining the pellets prepared in the first step in a rotary kiln at a temperature of 1250°C for 50 minutes to obtain a calcined material;

[0137] Then the calcined material is moved out of the kiln with the rotation of the rotary kiln and enters the ball mill, and tap water is added to obtain the sericite phyllite slurry;

[0138] Dosage: Add 600ml of tap water to 100g of roasting material;

[0139] The third step: impur...

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PUM

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Abstract

The invention discloses a method for industrially preparing aluminum hydroxide, alumina and aluminum fluoride from andalusite sericite phyllite as a raw material, which comprises the steps of: extracting aluminum hydroxide with the purity of 96-98.5 percent from the andalusite sericite phyllite as the raw material in a mode of ball production, calcinations, multistage separation and auxiliary agent addition; then calcinating the raw material to obtain the alumina; and reacting fluorine hydride gas with wet hydrogen alumina and dehydrating and drying to obtain the aluminum fluoride. The method solves the problem that pseudo andalusite-sericite phyllite ore in Qingliu County, Sanming City, Fujian Province cannot be utilized; and the prepared aluminum hydroxide, alumina and aluminum fluoride accord with national standard.

Description

technical field [0001] The present invention relates to a preparation method of aluminum hydroxide, aluminum oxide and aluminum fluoride, more particularly, refers to a kind of andalusite sericite phyllite ore as raw material, which is sequentially produced by industrial production method Methods for aluminum, alumina and aluminum fluoride. Background technique [0002] Alumina is divided into metallurgical alumina and chemical alumina. Metallurgical alumina is mainly used as raw material for electrolytic aluminum and refractory materials; chemical alumina mainly includes special ceramic alumina series, activated alumina series, granulated powder series, alumina series for special refractory materials, and alumina series for grinding and polishing etc., widely used in chemical industry, ceramics, refractory materials and military industry, etc. The amount of alumina is very large, and the market prospect is broad. [0003] Aluminum hydroxide can be widely used in polymer ...

Claims

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Application Information

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IPC IPC(8): C01F7/30C01F7/50
Inventor 高建康许善煌林义珍陈克斌
Owner 福建天筑新型材料有限公司
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