Method for production of bullion lead by two-section smelting processing on lead anode slime

A technology of lead anode slime and precious lead, which is applied in the field of precious metal pyrometallurgy and two-stage smelting treatment of lead anode slime to produce noble lead, which can solve the problems of long production cycle, low processing capacity of smelting furnace, and large consumption of reducing agent. Reach the effect of reducing fuel consumption, fuel consumption is obvious, and fuel consumption is reduced
CN103820643AActive Publication Date: 2014-05-28YUNNAN CHIHONG ZINC & GERMANIUM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YUNNAN CHIHONG ZINC & GERMANIUM
Publication Date
2014-05-28

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Abstract

The invention relates to a method for production of bullion lead by two-section smelting processing on lead anode slime, and belongs to a noble metal pyrometallurgical technology. The method improves the traditional technology that bullion lead is produced by processing the lead anode slime in a pyrometallurgical-process reducing smelting way. In comparison with an existing traditional technology for production of bullion lead by lead anode slime, the method has the advantages as follows: in the same converter, the technology includes two processes of low-temperature oxidation and high-temperature retailoring, the auxiliary material adding and charging method is changed into that after the lead anode slime is subjected to complete oxidation and converting, a reducing agent and a fluxing agent are further added for retailoring. Therefore, the method greatly reduces the adding amounts of anthracite coal as the reducing agent and soda ash as the fluxing agent, and lowers fuel consumption, the efficiency of arsenic and antimony removal is high, high-grade bullion lead is obtained, and the production capacity of the original converter is increased by 50%.
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Description

technical field The invention relates to a two-stage smelting method for producing noble lead from lead anode slime, which belongs to the noble metal pyrometallurgical technology, specifically the noble metal pyrometallurgical technology. Background technique There are basically two methods for the treatment of lead anode slime: fire process and wet process. The wet production process is long, the cycle is long, the production cost is high, and the amount of wastewater treatment is large; the treatment of lead anode slime at home and abroad generally adopts the traditional pyrotechnic process. The process principle is to mix lead anode slime, reducing agent, and solvent into the smelting furnace to reduce and smelt to produce precious lead, and then oxidize and refine the precious lead to produce gold-silver alloy with a purity greater than 97%. There are many researches on the treatment methods of lead anode slime in China: The title of the invention "A Method for Treati...

Claims

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