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Method for refining alumyte

A bauxite and concentration technology, applied in the direction of aluminum silicate, silicate, etc., can solve the problems of high cost, unsatisfactory impurity removal effect, and complicated process, so as to simplify the follow-up process, reduce the cost of impurity removal, The effect of simple process

Inactive Publication Date: 2005-09-14
焦作市多氟多化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that the impurity removal effect of this method is not ideal, the process is complicated, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The method of the present invention is as follows: crush the bauxite to 0.2mm particles, react with the crushed bauxite with hydrochloric acid with a concentration of 2%, the reaction time is 100 minutes, and the reaction temperature is 80°C. The liquid is separated, and then washed with water to wash away the residual acid solution and sediment on the surface of the bauxite, and the refined bauxite can be obtained.

Embodiment 2

[0011] The method of the present invention is as follows: pulverize the bauxite to particles of 10 mm, react with the pulverized bauxite with industrial waste acid with a concentration of 4%, the reaction time is 60 minutes, and the reaction temperature is 20 ° C. After fully reacting, carry out Solid-liquid separation, and then washing with water to wash off the residual acid and deposits on the surface of the bauxite to obtain refined bauxite.

Embodiment 3

[0013] The method of the present invention is: the bauxite is pulverized to the particle of 100mm, with the hydrochloric acid that concentration is 6%, hydrofluoric acid, the mixed acid of dilute sulfuric acid reacts with the pulverized bauxite, and the reaction time is 45 minutes, and the reaction temperature is After fully reacting at 40°C, carry out solid-liquid separation, and then wash with water to wash off the residual acid and deposits on the surface of the bauxite, and then the refined bauxite can be obtained.

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PUM

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Abstract

This invention relates to a method of fullyrefined bauxite. The procedures are that the bauxite pulverized is reacted with acid of concentration 1-10%, the reaction temperature is 0-1000C and reaction time is 30-120 minutes. The fullyrefined bauxite can be got by solid-liquid separation and scrubbing after reaction. The method of this invention is simple, cost is low, and the acid liquor can be allocated by waste acid and compound acid, and it can be circular used and there is no pollution. The quality of followed product can be highly improved and followed technique be facilitated, and cost of trash extraction can be reduced.

Description

technical field [0001] The invention relates to a method for refining bauxite. Background technique [0002] The output of aluminum is second only to steel, and it is a strategic metal material with a wide range of uses. The industrial reserves of bauxite in my country ranks seventh in the world. Bauxite is the main raw material for the production of alumina, aluminum chloride, aluminum sulfate, aluminum fluoride, sodium fluoroaluminate and other chemical products. Its main component is silicic acid Aluminum also contains a small amount of impurities, such as potassium, calcium, sodium, magnesium, iron, titanium and other metal element compounds, and the existence of these metal element compounds has a great impact on product quality, so impurities need to be removed. At present, when using bauxite, there is no prior impurity removal, but the impurities are controlled during the production process, so that the impurities are separated from the finished product for impurity r...

Claims

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Application Information

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IPC IPC(8): C01B33/26
Inventor 李世江侯红军杨华春皇甫根利于贺华
Owner 焦作市多氟多化工有限公司