Unlock instant, AI-driven research and patent intelligence for your innovation.

Treating process for lead anode mud

A lead anode slime and treatment method technology, applied in the direction of improving process efficiency, etc., can solve the problems of large equipment maintenance workload, large waste liquid recycling and processing volume, increase production cost, etc., and achieve the improvement of labor productivity, large processing volume, Easy-to-operate effects

Inactive Publication Date: 2005-04-27
HUNAN CHENZHOU XIANGCHEN HIGH TECH IND CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the traditional fire process, the advantage of the simple wet process is that the direct recovery of gold and silver can reach more than 95%, and Sb, Bi, Cu, etc. can be comprehensively recovered from the acid leaching solution, but the disadvantage is that the reagent consumption Large, large equipment maintenance workload, large amount of waste liquid recovery and treatment, so the labor productivity is lower than that of the fire method, thus increasing the production cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Composition of lead slime in a factory (weight%): Ag 14~16, Sb 35~45, Bi 6~8, Cu 7~10, Pb 10~12; Au 60~80g / t. The noble lead is smelted by the traditional fire method, and the antimony is blown away at 600-900°C to obtain high-grade noble lead, the composition (weight%) is Ag 41.22, Sb 4.06, Bi 21.64, Cu 24.80, Pb 0.68 The yield of noble lead 32.8%.

[0019] Molten precious lead 1000g, superheated at 400°C, pour the melt into a graphite funnel, use 8Kg / cm 2 The high-pressure air atomizes the melt, and the melt droplets are further crushed and cooled by a high-speed rotating disk to obtain noble lead powder with a particle size of -160 mesh. 2 Under the conditions, the control potential is 400-420MV for 2 hours, the leached residue is treated with 20% NaOH, the solid-liquid ratio is 1:3, 80-90°C for 1 hour, cooled, filtered, and the dry weight of the leached residue is 560g, containing 72.94% Ag. The silver-rich slag is mixed with 20% soda ash, and melted at 1150°C to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to method and process for treating lead anode mud. It this invention, the treatment incldues: first fire method and then wet method. The mud is used for producing lead with fire method using traditional method; then the lead is processed into powder by using atomization powder making technique. With method of Patent ZL 89103853.1 technique, gold, silver and other metals are recoved by controlling potential to proceed selectively leaching. Advantages are large scale of treatment of lead mud, high recovery rate, low chemicals consumption, low environmental pollution.

Description

technical field [0001] The invention relates to the treatment of lead anode slime and belongs to the refining of precious metals. Background technique [0002] Lead anode slime mainly contains Au, Ag, Sb, Bi, Cu, Pb and other elements. The treatment of lead anode slime at home and abroad generally adopts the traditional fire process, that is, the aluminum slime is reduced and smelted to obtain noble lead enriched with Au and Ag, and the noble lead is oxidized and refined to remove Pb, Sb, Bi and Cu to obtain crude silver. Pure silver is obtained by electrolysis of coarse silver, and Au is recovered from silver mud. The advantage of the fire method is that the process technology is mature, the adaptability to the raw materials is wide, and the processing capacity is large. The disadvantage is that the direct silver recovery rate is low, only reaching 85-88%. The smoke and dust and silver-containing slag generated during the smelting process are difficult to handle, difficul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22B7/00
CPCY02P10/20
Inventor 胡绪铭胡健松
Owner HUNAN CHENZHOU XIANGCHEN HIGH TECH IND CO LTD