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Technology and device thereof adopting bottom blowing molten bath for antimony reduction and smelting

A technology for melting and smelting antimony in a molten pool, applied in the field of antimony smelting, can solve the problems that sodium-alkali slag cannot be used as waste slag, the service life of refractory bricks is short, and the cost of antimony smelting is increased, so as to prolong the service life of masonry, prolong the service life, improve the Effect of processing cost reduction

Inactive Publication Date: 2012-10-31
HENAN YUGUANG GOLD & LEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reverberatory furnace belongs to the backward process furnace. The antimony smelting in the reverberatory furnace has the disadvantages of poor environmental protection effect, high labor intensity, high cost, high energy consumption, intermittent operation, and large changes in furnace temperature.
The chemical flux soda ash and fluorite are added to the antimony smelting process of the reverberatory furnace. The slag produced by the reduction smelting is alkaline sodium-alkali slag. The service life is short, and sodium-alkali slag cannot be used as waste slag, and further processing is required to recover valuable metals and reduce secondary pollution. These defects inevitably increase the smelting cost of antimony

Method used

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  • Technology and device thereof adopting bottom blowing molten bath for antimony reduction and smelting
  • Technology and device thereof adopting bottom blowing molten bath for antimony reduction and smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 , figure 2 As shown, high-antimony slag, high-antimony soot after granulation, iron ore, gravel, and coke are driven by grab buckets according to the weight ratio of 100:0~100:2~15:2~15:5~15 1. Mix the ingredients, and the mixed materials are transported to the silo 2 with a grab bucket. The materials in the silo are continuously quantified by nuclear belt scales or electronic belt scales. The antimony smelting furnace 4 melts and undergoes reduction and slagging reactions; the molten pool smelting antimony smelting furnace maintains negative pressure, the liquid level maintains a molten pool of 600-1000mm, and the temperature maintains 900-1200°C. By adjusting the molten pool, the antimony smelting furnace The gas flow in the spray gun 6 controls the furnace temperature, so that the materials entering the furnace are melted in a short time, and the reduction and slagging reactions occur; the strong reducing atmosphere in the furnace is controlled by ...

Embodiment 2

[0038] Such as figure 1 , figure 2 As shown, antimony oxide ore, iron ore, quartz, gravel, and coke are mixed according to the ratio of 100:0~100:2~15:2~15:5~15 by weight, and the mixing The final material is transported to the silo 2 with a grab bucket, and the material in the silo is continuously quantified by the nuclear belt scale or the electronic belt scale 3, and enters the molten pool smelting antimony smelting furnace 4 to be melted and Reduction and slagging reactions occur; negative pressure is maintained in the molten pool smelting antimony smelting furnace, the liquid level maintains a molten pool of 600-1000mm, and the temperature maintains 900-1200°C. By adjusting the gas flow in the spray gun 6 of the molten pool smelting antimony Control the furnace temperature so that the materials entering the furnace melt in a short time, and undergo reduction and slagging reactions; the strong reducing atmosphere in the furnace is controlled by the amount of coke in the ...

Embodiment 3

[0040] Such as figure 1 , figure 2 As shown, antimony oxide powder, iron ore, quartz, gravel, and coke are mixed according to the ratio of 100:0~100:2~15:2~15:5~15 by weight, and the mixing The final material is transported to the silo 2 with a grab bucket, and the material in the silo is continuously quantified by the nuclear belt scale or the electronic belt scale 3, and enters the molten pool smelting antimony smelting furnace 4 to be melted and Reduction and slagging reactions occur; negative pressure is maintained in the molten pool smelting antimony smelting furnace, the liquid level maintains a molten pool of 600-1000mm, and the temperature maintains 900-1200°C. By adjusting the gas flow in the spray gun 6 of the molten pool smelting antimony Control the furnace temperature so that the materials entering the furnace melt in a short time, and undergo reduction and slagging reactions; the strong reducing atmosphere in the furnace is controlled by the amount of coke in t...

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Abstract

The invention belongs to the technical field of antimony smelting in the industry of non-ferrous metal metallurgy, and particularly relates to a technology and a device thereof adopting bottom blowing molten bath for antimony reduction and smelting in the process of antimony smelting, wherein the bottom blowing molten bath smelting technology is adopted, antimonial raw material and burden are uniformly blended according to a suitable proportion and fed into a molten bath antimony smelting furnace for smelting to carry out reduction and slag making reaction; oxygen, nitrogen, natural gas or coal gas are fed into the melt through a gas spray gun from the bottom part or bottom side part of the molten bath antimony smelting furnace; the gas is combusted to release heat, so as to ensure the temperature of the furnace, participate in the oxidation and reduction reaction of the burden, and vigorously blend the melt, as a result, the heat and mass transfer and reaction speed in the smelting furnace can be improved, the burden can be quickly reacted to produce lean antimony slag, crude antimony and flue gas, the antimony can be continuously processed, and the slag type with little corrosion on the refractory material is produced. The technology and the device have the advantages of low investment, energy consumption and cost, high automation degree and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of antimony smelting in the nonferrous metal smelting industry, and in particular relates to a process and a device for reducing and smelting antimony in a bottom-blown molten pool during the antimony smelting process. Background technique [0002] Raw materials for antimony smelting include antimony sulfide concentrate and antimony oxide concentrate, as well as high-antimony soot and high-antimony slag produced in non-ferrous metal smelting. For the smelting of antimony in high-antimony soot and high-antimony slag, reverberatory furnaces are commonly used in China. The process uses antimony-containing raw materials together with soda ash and coke for reduction smelting at 1100 ° C to produce crude antimony, crude Antimony produces antimony white or refined antimony after removing arsenic. After the antimony sulfide concentrate is oxidized and volatilized to produce antimony oxide powder and the reduction s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02
CPCY02P10/20
Inventor 赵传和刘素红张和平袁永锋
Owner HENAN YUGUANG GOLD & LEAD
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