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A method for comprehensively treating copper smelting dust and black copper mud

A comprehensive treatment, black copper slime technology, applied in the field of metallurgy, can solve the problems of low metal recovery rate, only consider copper recovery, enter flue gas, etc., achieve the effect of easy industrial application, improve resource utilization rate, and simplify the treatment process

Active Publication Date: 2021-03-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional technology processes black copper slime, most of them only consider the recovery of copper, and directly return the black copper slime to the copper smelting system, resulting in a vicious cycle of As, Pb, Sb, Bi, etc. in the copper smelting system, and some As, Pb , Sb, Bi, etc. enter the flue gas, causing adverse effects on the ecological environment
There are also many researchers who use acid leaching or alkaline leaching to treat black copper sludge, but there are generally problems such as cumbersome treatment process and low metal recovery rate. At the same time, highly toxic gas arsine may be produced, which has certain safety. Hidden danger

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The main ingredients and content of black copper paste and arsenic and dust are shown in Tables 1 and 2:

[0019] Table 1 Main ingredients and content of black copper paste and wt%

[0020] Cu AS SB BI PB Ni 42 22.5 6.2 2.3 0.7 0.5

[0021] Table 2 Main ingredients and contents of arsenic and dust

[0022] AS PB FE Cu Zn 25.3 20.2 9.8 0.4 7.5

[0023] By quality ratio M 黑铜泥 : M 含砷烟尘 : M 硫酸钠 After mixing the three materials, the three materials were mixed, heated to 1000 ° C for high temperature smelting, holding 5 h, after the smefry was completed, and the reaction was divided into two layers, the upper layer was a mixture of sodium containing sodium The lower layer is a thick copper with yellow metallic gloss, used for electrolysis refining of copper. The recovery of the crude copper was 90.7%, and the content of copper in the crude copper was 99.1%.

Embodiment 2

[0025] Black copper paste, arsenic and dust containing the same as in Example 1.

[0026] By quality ratio M 黑铜泥 : M 含砷烟尘 : M 硫酸钠 After mixing the three materials, the three materials were mixed, heated to 1200 ° C for high temperature smelting, holding 2 h, after the smefry was completed, and the reaction was divided into two layers, the upper layer was a mixture of sodium containing sodium The lower layer is a thick copper with yellow metallic gloss, used for electrolysis refining of copper. The recovery of crude copper was detected was 90.5%, and the content of copper in the crude copper was 99.3%.

Embodiment 3

[0028] The main components and content of black copper paste and arsenic and dust are shown in Table 3 and Table 4:

[0029] Table 3 Main ingredients and content of black copper paste wt%

[0030] Cu AS SB BI PB Ni 51.5 17.9 1.9 1.8 0.6 0.6

[0031] Table 4 Main ingredients and contents of arsenic smoke and wt%

[0032] AS PB Cu Zn BI 8.4 26.9 3.1 11.7 2.2

[0033] By quality ratio M 黑铜泥 : M 含砷烟尘 : M 硫酸钠 After mixing the three materials, the three materials were mixed, heated to 1300 ° C for high temperature smelting, thermal temperature 1 h, after the smefry was completed, and the reaction was partially separated, the upper layer was a mixture of sodium containing sodium The lower layer is a thick copper with yellow metallic gloss, used for electrolysis refining of copper. The recovery of crude copper was detected was 90.1%, and the content of copper in the crude copper was 99.2%.

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Abstract

The invention discloses a comprehensive treatment method for copper smelting smoke dust and black copper sludge. The comprehensive treatment method for the copper smelting smoke dust and the black copper sludge includes: preforming high temperature smelting on the black copper sludge, the arsenic-containing smoke dust and sodium sulfate which are mixed evenly to obtain a melt, and layering the melt after cooling, thereby obtaining a mixed material containing arsenic and natrium on the upper layer and crude copper on the lower layer, wherein the crude copper can be used for electrolytic refining of copper. The comprehensive treatment method for the copper smelting smoke dust and the black copper sludge achieves synergistic treatment for the copper smelting smoke dust and the black copper sludge, is short in technical process and simple to operate, and improves recovery rate of resources.

Description

Technical field [0001] The present invention belongs to the field of metallurgical technology, and more particularly to a method of comprehensively treating copper smelting and black copper mud. Background technique [0002] Arsenic dust containing arsenic in the copper melting process, wherein the arsenic content is between 5 to 30%, in addition, there is a price of copper, lead, zinc. This type of soot component is very complicated and difficult to handle. The copper smelting enterprises are treated with a method of mineral melting, resulting in an increase in the smoke of the copper smelting system, and the operating conditions of the furnace have deteriorated. Since the impurities are closed and accumulated in the copper smelting system, the product quality of cathode copper is very affected. In the copper electrolytic refining process, when the impurities in the electrolyte are accumulated to a certain extent, the electrolyte must be purified and adjusted. When the electroly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/02C22B15/00C22B30/04
CPCC22B7/001C22B7/02C22B15/0028C22B30/04Y02P10/20
Inventor 刘旭恒赵中伟陈星宇李江涛何利华刘旭黄家豪
Owner CENT SOUTH UNIV
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