Copper soot smelting and separation combined treatment method

A technology of combined treatment and copper soot is applied in chemical instruments and methods, arsenic compounds, and the improvement of process efficiency. It can solve the problems of difficulty in treating As harmful, long treatment process, low economic benefit, etc., and achieve good metal separation effect. , The effect of low production cost and small equipment investment

Inactive Publication Date: 2016-06-01
CENT SOUTH UNIV
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Problems solved by technology

[0006] Comparing these copper soot treatment processes comprehensively, the pyrotechnic process has been gradually replaced due to the influence of the operating environment and environmental pollution, and the combined pyrotechnic-wet process has gradually become the main body of the existing treatment process

Method used

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  • Copper soot smelting and separation combined treatment method

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Embodiment 1

[0032] Example 1: Copper soot produced during the smelting process of a copper concentrate oxygen-enriched bottom-blown furnace molten pool in a domestic enterprise, its main composition range is calculated as (%) by mass percentage: Cu15.42, Pb22.68, As10.15, Zn3.27, Bi2.14 and S8.90. The mass percentage of industrial grade sulfuric acid is not less than 98.0%, and the mass percentage of industrial grade sodium sulfide is greater than 60.0%. Copper soot is ball milled to make -0.074mm account for 100%, then add water to make slurry according to the liquid-solid ratio (the ratio of liquid volume L to solid weight Kg) 2.0:1, and then add solid sodium sulfide to make the metal ion of the entire slurry mixed potential Compared with the calomel electrode, the pH value is 120mV. At the same time, industrial sulfuric acid is added to adjust the pH value of the solution to maintain at 0.8. After the potential is stable for 120 minutes, the liquid-solid separation is achieved by means...

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Abstract

The invention discloses a copper soot smelting and separation combined treatment method. Copper soot is leached in water solution after ball milling to a requested particle size; sodium sulfide is added to control the metal ion mixed potential of whole pulp at a requested numerical value; meanwhile, sulfuric acid is added to adjust the pH value of the pulp to keep at a requested numerical value; after the solution potential is stabilized, and the stirring is continued by a period of time, the filtration is performed; the leaching liquid controls the metal ion mixed potential and the pH value; arsenic sulfide and zinc sulfide precipitates are respectively prepared to send to waste water for treatment; and leaching slag directly performs flotation to prepare copper concentrate and flotation tailing after alkaline ball milling conversion. The method recovers valuable metal step by step by using a control potential vulcanization leaching and beneficiation combined method; the processes are tightly associated; and single process cannot achieve the desired effect of selection and separation of the valuable metal in copper soot. The leaching rates of arsenic and zinc both reach above 95.0%; and the direct recovery rate of copper reaches above 98.0%.

Description

technical field [0001] The invention relates to a hydrometallurgical process in the field of nonferrous metallurgy, in particular to a hydrometallurgical method for step-by-step separation of valuable metals in copper fume by means of a combination of potential-controlled sulfidation leaching and ore dressing. Background technique [0002] Copper is a rose-red heavy non-ferrous metal. Its excellent physical and chemical properties are widely used in various fields such as electrical, national defense, light industry, machinery manufacturing and construction. It is second only to aluminum in the consumption of non-ferrous metal materials in my country. . At present, the general use ratio of copper is as follows: 48-49% in the electrical industry, 19-20% in the communication industry, 14-16% in construction, 7-10% in transportation, and 7-9% in home appliances and others. In 2014, the output of ten non-ferrous metals in my country was 44.17 million tons, including 24.38 millio...

Claims

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Application Information

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IPC IPC(8): C22B7/02C22B15/00C22B13/00C22B19/30C22B30/06C22B30/04C01G28/00
CPCC01G28/00C22B7/007C22B7/02C22B13/045C22B15/0071C22B15/0089C22B19/22C22B19/30C22B30/04C22B30/06Y02P10/20
Inventor 刘伟锋朱鹏春邓循博傅新欣陈威陈霖张杜超杨天足
Owner CENT SOUTH UNIV
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