Lead anode mud and copper anode mud combined treatment method
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A technology of copper anode slime and lead anode slime, which is applied in the field of non-ferrous metal smelting
Inactive Publication Date: 2019-12-24
JIYUAN YUGUANG NONFERROUS METALLURGY DESIGN & RES INST CO LTD
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[0006] The technical problem addressed by the present invention is: there are certain defects
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Embodiment 1
[0065] In this example, lead anode slime and copper anode slime are jointly treated, wherein the content of each element in the lead anode slime and copper anode slime to be treated is specifically shown in Table 1, and the lead anode slime and copper anode slime are produced by Yuguang Gold Lead The company's lead electrolysis workshop and copper electrolysis workshop were obtained.
[0066] Table 1 Element content in lead anode slime and copper anode slime to be treated
[0093] For the joint treatment process of this lead anode slime and copper anode slime, specifically as follows:
[0094] (1) Sulfation roasting of copper anode slime
[0095] Take 1000kg of copper anode slime to be treated, add 500kg of concentrated sulfuric acid to it, and slurry at room temperature for 3.5 hours; after slurring, put it in the rotary kiln for roasting; when roasting, the pressure in the rotary kiln is controlled at -8000~-9000Pa, and the control Zone temper...
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Abstract
The invention discloses a copper anode mud and lead anode mud combined treatment method. The method includes the steps that concentrated sulfuric acid and the copper anode mud are subjected to mixed and pulpified treatment and roasted, and coarse selenium and evaporated selenium slag are obtained; the evaporated selenium slag is pulpified, sodium chloride is added for reaction, and a separated copper solution and separated copper slag are obtained; the separated copper slag is subjected to carbonation treatment, and the separated copper solution is subjected to electrodeposition decoppering; after carbonation conversion is finished, the separated copper slag and lead anode mud are mixed and smelted; bullion lead is subjected to intermittent distillation, and a high-silver lead bismuth alloy is subjected to secondary continuous distillation; and gold, silver and refined bismuth are recycled efficiently. The process is convenient to control and operate, short in flow, low n investment cost and small in intermediate occupation; the problems in traditional copper anode mud treatment processes can be effectively solved; meanwhile valuable metals such as gold, silver, selenium, copper, lead, antimony and bismuth can be recovered through mixed treatment of the copper and lead anode mud; and no waste is generated in the whole process, better recycling of a whole system can be achieved,and discharging of 5000m<3> waste acid can be reduced every year, and the social and economical benefits are remarkable.
Description
technical field [0001] The invention belongs to the technical field of nonferrous metal smelting. In particular, it relates to a combined treatment method of copper anode slime and lead anode slime. Background technique [0002] Copper anode slime and lead anode slime are anode slime products produced during the electrolysis of copper and lead. Copper anode slime is rich in valuable metals such as gold and silver, and is one of the important sources of gold and silver. Lead anode slime also contains a relatively high amount of valuable metals. Therefore, efficient and green recycling of valuable precious metals and non-precious metals in anode slime has always been a research hotspot in this industry. [0003] At present, lead anode slime is generally treated by fire method, and the treatment methods of copper anode slime are mainly sulfate roasting-copper and silver leaching method, and pressure leaching of copper and tellurium-full wet method to recover gold and silver. ...
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