Separation process for material containing lead, antimony, copper, bismuth and silver

Abstract

The invention relates to a separation process for a material containing lead, antimony, copper, bismuth and silver. The separation process comprises the following steps: compounding a lead-contained oxide material one to twice the weight of a raw material into the raw material containing the lead, the antimony, the copper, the bismuth and the silver, adding calcined soda and a reducer which occupies 5 percent to 10 percent of the weight of the raw material, and melting the mixture at a temperature of 1100 DEG C to 1200 DEG C so as to form an upper copper-antimony-silver ally layer and a lower lead-bismuth-silver alloy layer in a melting furnace and separate copper-antimony from bismuth-silver, thereby realizing the favorable separation of lead-silver-bismuth from copper-antimony. The obtained bismuth-silver alloy is an optimal raw material for extracting the bismuth and the silver, and a vacuum distillation process treatment is adopted to obtain rough bismuth and rough silver; and the obtained separated lead contains larger than 99 percent of lead and can be made as supplementary lead for a blast furnace condenser to relieve the external stress of the supplementary lead. The direct yield rate of valuable metals in the full process is high, the yield rate of the silver extracted from a lead-bismuth alloy is larger than 74 percent or larger than 98 percent if adding the silver extracted from rough copper, the yield rate of the bismuth is 83 percent, and the yield rate of the copper is 90 percent.

Description

【Technical field】 [0001] The invention belongs to the technical field of separation and enrichment of nonferrous metals, and relates to a process for separating materials containing lead, antimony, copper, bismuth, and silver by adopting fire separation. 【Background technique】 [0002] At present, in some lead smelters, a material containing lead, antimony, copper, bismuth, and silver is produced, and the comprehensive recovery of the metals in it is a very complicated technological problem. At present, the existing lead smelters only extract part of the metals. Inadequate comprehensive recovery of individual metals in the material is not given. 【Content of invention】 [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a separation process for materials containing lead, antimony, copper, bismuth, and silver, which is simple and reasonable in process, low in production cost, and capable of comprehensively recoverin...

AI Technical Summary

Problems solved by technology

[0002] At present, a material containing lead, antimony, copper, bismuth, and silver is produced in some lead smelters, and the comprehensive recovery of the metals in it is an extremely complicated technological problem. At present, the existing lead smelters only extract part of the metals. Inadequate comprehensive recovery of individual metals in the material

Images