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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

Active Publication Date: 2021-04-06
HENAN ZHONGYUAN GOLD SMELTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional treatment process needs to discharge a large amount of precious metal-containing smelting slag, which reduces the direct recovery rate of precious metals. The smelting slag also needs to be processed to recover the precious metals, lead, bismuth, barium, etc., which increases the subsequent processing costs.

Method used

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  • Novel copper anode mud treatment process
  • Novel copper anode mud treatment process
  • Novel copper anode mud treatment process

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A new copper anode slime treatment process, such as figure 1 As shown, the process is as follows:

[0032] (1) Wet removal of copper, selenium and tellurium from anode slime

[0033] Take 5 tons of 1# anode slime (see the following table for its composition) and adjust the slurry according to the liquid-solid ratio of 3:1. After the slurry is adjusted, add industrial concentrated sulfuric acid to control the sulfuric acid content in the solution to about 100g / L, and add catalyst KI to control the concentration of 1g / L , heated to 70°C with steam, added 30wt% hydrogen peroxide, the amount was 1.8 times of the theoretical mass, continued to react for 2 hours after all the hydrogen peroxide was added, and obtained 4.15t decoppered anode slime and 13.2m3 copper-containing anode slime after plate and frame filtration The solution of selenium and tellurium, wherein the solution contains 38g / L copper, 1.8g / L selenium, and 3.3g / L tellurium. The main components of decoppered an...

Embodiment 2

[0047] A new copper anode slime treatment process, such as figure 1 As shown, the process is as follows:

[0048] (1) Wet removal of copper, selenium and tellurium from anode slime

[0049] Take 5 tons of 1# anode slime (see the following table for its composition) and adjust the slurry according to the liquid-solid ratio of 3:1. After the slurry is adjusted, add industrial concentrated sulfuric acid to control the sulfuric acid content in the solution to about 150g / L, and add catalyst NaCl to control the concentration of 5g / L , add steam to 70°C, add sodium ferrate, the amount is 1.4 times of the theoretical mass, continue to react for 4 hours after all the sodium ferrate is added, and obtain 4.2t decoppered anode slime and 13.5m³ after plate and frame filtration A solution containing copper, selenium and tellurium, wherein the solution contains 46g / L copper, 2.3g / L selenium, and 4.1g / L tellurium. The main components of the decoppered anode slime are shown in the following t...

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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.

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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Application Information

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IPC IPC(8): C22B7/00C22B15/00C22B13/00C22B26/20C22B30/06C22B11/02C01B19/00
CPCC22B7/007C22B15/0071C22B13/045C22B26/20C22B30/06C22B7/001C22B11/021C01B19/00Y02P10/20
Inventor 彭国敏张文岐廖忠义郭引刚王伯义韩战旗田静熊亚东李晓恒
Owner HENAN ZHONGYUAN GOLD SMELTERY
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