Novel copper anode mud treatment process

A copper anode slime and new process technology, applied in the field of non-ferrous metal smelting, can solve the problems of increasing processing costs and reducing the direct recovery rate of precious metals, and achieve the effects of improving processing capacity, shortening processing time, and reducing production costs
CN112609078AActive Publication Date: 2021-04-06HENAN ZHONGYUAN GOLD SMELTERY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HENAN ZHONGYUAN GOLD SMELTERY
Publication Date
2021-04-06

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Abstract

The invention discloses a novel copper anode mud treatment process, and belongs to the technical field of non-ferrous metal smelting. The process is mainly divided into three process stages: (1) an anode mud wet copper, selenium and tellurium removal stage; (2) an anode mud wet lead, barium and bismuth removal stage; and (3) a Kaldo furnace pyrometallurgy stage. The innovation point of the process lies in that all copper, and part of selenium and tellurium are removed from the anode mud through the first process stage, and corresponding copper, tellurium and selenium products are produced; removing all lead, barium and bismuth in th second process stage is performed to produce corresponding lead, barium and bismuth products; a new anode mud Kaldo furnace pyrometallurgy treatment thought is provided through pretreatment impurity removal in the first two process stages, smelting operation can be canceled in the Kaldo furnace smelting stage, blowing operation is performed after direct material melting, and a large amount of precious metal-containing smelting slag (the output of the precious metal-containing smelting slag is generally 0.5-0.8 time of the weight of the anode mud) produced by the conventional Kaldo furnace smelting operation is avoided.
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Description

technical field

[0001] The invention belongs to the field of nonferrous metal smelting, and in particular relates to a new process for treating copper anode slime. Background technique

[0002] The Kaldor furnace was originally used in steelmaking, and has now been developed and applied in non-ferrous metal smelting. It can process copper concentrate, copper waste, lead concentrate, lead waste, lead dust and anode slime, etc. The use of Kaldor furnaces for anode slime treatment began in 1993, and now there are about 10 Kaldor furnaces in the world for anode slime treatment. The Kaldor furnace anode slime treatment process is mainly pretreatment copper removal-Kaldor furnace smelting-gold and silver refining. This process has the advantages of short process, less equipment and low cost. It is an internationally advanced anode slime treatment process.

[0003] There are two main processes for decopper pretreatment: one is the traditional sulfuration roasting + acid leaching d...

Claims

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