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Process for extracting Ga from Ga-containing ore

An extraction method and mineral technology, applied in the field of extraction of gallium from gallium-containing minerals, can solve the problems of difficult gallium metal extraction, waste of resources, etc., and achieve the reduction of production costs, significant economic and social benefits, and convenient economic and social benefits. practical effect

Inactive Publication Date: 2005-04-20
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing gallium metal is a precious rare non-ferrous metal and an extremely important raw material for the semiconductor and optoelectronic industries. However, its content in the earth's crust is less than 1ppm, and it often coexists with other metal materials. Due to metallurgical technology The problem is that after refining the main mineral products, the trace amount of gallium is discarded together with the slag, resulting in a serious waste of resources. This situation is common in many mines, such as in the gallium-containing metallurgical industrial slag of a smelter in northern Guangdong , its gallium and iron are co-crystallized, and its outer layer is surrounded by glassy silica, so it is difficult to extract gallium metal by conventional methods

Method used

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Embodiment 1

[0015] The method for extracting gallium from gallium-containing minerals of the present invention comprises the following steps:

[0016] (1) Pulverize gallium-containing minerals and aluminum oxide-containing minerals, and the final particle size is 100 to 300 mesh. In this embodiment, the aluminum oxide minerals are bauxite, and the gallium-containing minerals and aluminum oxide-containing minerals are pulverized The final particle size is 200 mesh;

[0017] (2) The bauxite is activated and roasted at 500-800° C. for 1 to 3 hours. In this embodiment, the bauxite is activated and roasted at 500-800° C. for 1 hour;

[0018] (3) Add bauxite, gallium-containing minerals, extraction processing aids, and reaction kinetic accelerators according to the formula ratio, mix thoroughly, and heat the mixture to 700-1400°C to realize high-temperature extraction of gallium from aluminum; among them, gallium-containing minerals and The molar ratio of bauxite is 1:0.3~3, the molar ratio of...

Embodiment 2

[0032] The method for extracting gallium from gallium-containing minerals of the present invention comprises the following steps:

[0033] (1) Grinding gallium-containing minerals and aluminum oxide-containing minerals, the final particle size is 100 to 300 meshes. In this embodiment, the aluminum oxide minerals are bauxite, and the gallium-containing minerals and aluminum oxide-containing minerals are pulverized The final particle size is 300 mesh;

[0034] (2) The bauxite is activated and roasted at 500-800° C. for 1 to 3 hours. In this embodiment, the bauxite is activated and roasted at 500-800° C. for 3 hours;

[0035] (3) Add bauxite, gallium-containing minerals, extraction processing aids, and reaction kinetic accelerators according to the formula ratio, mix thoroughly, and heat the mixture to 700-1400°C to realize high-temperature extraction of gallium from aluminum; in this embodiment, The molar ratio of gallium-containing mineral and bauxite is 1: 3, and the extracti...

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Abstract

The invention relates to a method for extracting gallium in gallium-containing minerals. In the present invention, the minerals containing aluminum oxide such as bauxite are used as the extractant of gallium, and gallium is extracted into aluminum by utilizing the similar properties of aluminum and gallium, and then the existing technology is used to separate aluminum and silicon, and then the aluminum and gallium, the method of extracting aluminum and gallium respectively, therefore, the present invention fully utilizes existing aluminum smelting, gallium smelting equipment and technology, reduces technical difficulty and production investment cost, makes it easy to realize industrialized production; In addition, the present invention is due to Aluminum smelting and gallium smelting are carried out at the same time, which also reduces production costs and is conducive to improving the competitiveness of enterprises. The invention is a convenient and practical method for extracting gallium in gallium-containing minerals, which is effective and has remarkable economic and social benefits. It can be used as a method for extracting gallium from various gallium-containing minerals, or as a smelting step in the continuous smelting of gallium-containing and various metal minerals.

Description

1. Technical field: [0001] The invention relates to a method for extracting gallium in gallium-containing minerals, which belongs to the modification technology of the method for extracting gallium in gallium-containing minerals. 2. Background technology: [0002] The existing gallium metal is a precious rare non-ferrous metal and an extremely important raw material for semiconductor and optoelectronic industries. However, its content in the earth's crust is less than 1ppm, and it often coexists with other metal materials. Due to metallurgical technology The problem is that after refining the main mineral products, the trace amount of gallium is discarded together with the slag, resulting in a serious waste of resources. This situation is common in many mines, such as in the gallium-containing metallurgical industrial slag of a smelter in northern Guangdong , its gallium and iron are co-crystallized, and its outer layer is surrounded by glassy silica, so it is difficult to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B58/00
Inventor 李建钢林润惠
Owner GUANGDONG IND TECHN COLLEGE
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