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Bismuth removal method used in reverberatory refining process of antimony smelting

A refining process and reverberatory furnace technology, which is applied in the field of non-ferrous metal antimony smelting, can solve problems affecting the quality of antimony products, there is no antimony smelting reverberatory furnace for bismuth removal method, and restrict the application of antimony products, etc., to achieve good bismuth removal effect and economic benefits Remarkable, widening effect of application field

Inactive Publication Date: 2020-04-24
广西万仕智稀贵金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the smelting process of non-ferrous metal antimony, the impurity bismuth affects the quality of antimony products and restricts the application of antimony products in industry, but so far there is no effective method for removing bismuth in the production and refining process of reverberatory furnaces for antimony smelting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Refining and removing bismuth in 18㎡ reverberatory furnace, using an alkali metal compound as a bismuth removing agent, the antimony liquid contains 0.05% bismuth before refining, the weight of the antimony liquid is estimated to be 50 tons, and the prepared bismuth removing agent 2 is added at 950℃~1000℃ The slag was produced after stirring for 1 hour. The antimony solution contained 0.001% bismuth, which was better than the expected value, and the effect of removing bismuth was remarkable.

Embodiment 2

[0014] Refining tin removal in 16㎡ reverberatory furnace, using an alkali metal compound as a bismuth removal agent, the antimony liquid contains 0.03% bismuth before refining, the weight of the antimony liquid is estimated to be 45 tons, and the prepared bismuth removal agent 1.5 is added at 950℃~1000℃ The slag was produced after stirring for 1 hour. The antimony solution contained 0.0006% bismuth, which was better than the expected value, and the bismuth removal effect was remarkable.

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PUM

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Abstract

The invention relates to the technical field of smelting of the non-ferrous metal--antimony, and discloses a bismuth removal method used in reverberatory refining process of antimony smelting. According to the invention, a certain alkali metal compound is used as a bismuth removing agent; before refining, the antimony liquid contains 0.03%-0.05% of bismuth and has a weight of 45-50 tons; 1.5-2 tons of the prepared bismuth removing agent is added at 950-1000 DEG C, slag is discharged after blast stirring is conducted for one hour, sampling is conducted, and the bismuth content of the antimony liquid is 0.0001%-0.0006% according to test results; and slag without bismuth produced after a complete reaction can float on the surface of the antimony liquid, and dross without bismuth is pulled outof a furnace from an operation door. With such a technical scheme, impurity bismuth in antimony can be effectively removed, remarkable economic benefits are obtained, and meanwhile, the bismuth removing method is of important significance in expanding the application field of antimony products in industrial engineering.

Description

technical field [0001] The invention relates to the technical field of antimony smelting of nonferrous metals, in particular to a method for removing bismuth in the reverberatory furnace refining process of antimony smelting. Background technique [0002] During the smelting process of non-ferrous metal antimony, the impurity bismuth affects the quality of antimony products and restricts the application of antimony products in industry, but so far there is no effective method for removing bismuth in the production and refining process of reverberatory furnaces for antimony smelting. [0003] During the research and practice of this method, the inventors of the present invention have found that: the compound of alkali metal is included; the compound of alkali metal is used alone or mixed with several kinds in a certain proportion to prepare antimony refining bismuth remover, It has a good bismuth removal effect in the reverberatory furnace refining process of antimony smeltin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02C22B9/10
CPCC22B9/10C22B30/02
Inventor 王卫国
Owner 广西万仕智稀贵金属科技有限公司