Method for selectively extracting copper from iron-copper-matte materials

A selectivity and material technology, applied in the direction of improving process efficiency, etc., can solve the problems of affecting the quality of cathode copper products and reducing the electrolysis efficiency of swirl electrolysis, achieving significant economic benefits, reducing copper ion concentration, and high electrolysis efficiency.

Active Publication Date: 2016-02-24
CHENZHOU CITY JINGUI SILVER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has certain limitation to raw material, is suitable for processing conventional lead matte, namely high iron (Fe>5%) low arsenic (As5.0%) if the copper matte is treated with this method, because the iron content in the raw material is too low, most of the arsenic will not be solidified and enter the solution during the leaching process, which will not only greatly reduce the electrolysis efficiency of swirl electrolysis, but also affect Quality of Copper Cathode Products

Method used

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  • Method for selectively extracting copper from iron-copper-matte materials

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Experimental program
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Effect test

Embodiment 1

[0031] Composition and weight percent of the iron-copper matte material: Pb26.43%, Cu49.65%, S12.37%, Ag0.4628%, Fe0.43%, As7.55%.

[0032] see figure 1, which is a process flow diagram for selectively extracting copper from iron-copper matte materials according to an embodiment of the present invention, specifically comprising the following steps:

[0033] Step 1, take 500 grams of the above-mentioned iron-copper matte material, crush and grind it to a particle size of 100 mesh, then mix it with dilute sulfuric acid, lignin, and pyrite powder, mix it in a pulping tank, and then pour it into an autoclave. Oxygen pressure leaching under the condition of continuously feeding oxygen enrichment, the oxygen pressure leaching conditions are: sulfuric acid concentration 115g / L, liquid-solid ratio 8:1, temperature 140°C, adjustment and maintenance pressure 1.2MPa, stirring speed 600r / min, Reaction time 3h.

[0034] Step 2: After the oxidation leaching is completed, the ore pulp is d...

Embodiment 2

[0043] Composition and weight percentage of the iron-copper matte material: Pb30.41%, Cu56.23%, S8.20%, Ag0.6312%, Fe0.24%, As12.75%.

[0044] see figure 1 , which is a process flow diagram for selectively extracting copper from iron-copper matte materials according to an embodiment of the present invention, specifically comprising the following steps:

[0045] Step 1, take 500 grams of the above-mentioned iron-copper matte material, crush and grind it to a particle size of 100 mesh, then mix it with dilute sulfuric acid, lignin, and pyrite powder, mix it in a pulping tank, and then pour it into an autoclave. Oxygen pressure leaching under the condition of continuously feeding oxygen enrichment, the oxygen pressure leaching conditions are: sulfuric acid concentration 100g / L, liquid-solid ratio 10:1, temperature 145°C, adjustment and maintenance pressure 1.4MPa, stirring speed 600r / min, The reaction time is 2.5h.

[0046] Step 2: After the oxidation leaching is completed, the...

Embodiment 3

[0055] Composition and weight percentage of the iron-copper matte material: Pb30.41%; Cu56.23%; S8.20%; Ag0.6312%; Fe0.24%; As12.75%.

[0056] see figure 1 , which is a process flow diagram for selectively extracting copper from iron-copper matte materials according to an embodiment of the present invention, specifically comprising the following steps:

[0057] Step 1, take 500 grams of the above-mentioned iron-copper matte material, crush and grind it to a particle size of 100 mesh, then mix it with dilute sulfuric acid, lignin, and pyrite powder, mix it in a pulping tank, and then pour it into an autoclave. Oxygen pressure leaching under the condition of continuously feeding oxygen enrichment, the oxygen pressure leaching conditions are: sulfuric acid concentration 100g / L, liquid-solid ratio 10:1, temperature 145°C, adjustment and maintenance pressure 1.4MPa, stirring speed 600r / min, The reaction time is 2.5h.

[0058] Step 2: After the oxidation leaching is completed, the...

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Abstract

The invention relates to the field of hydrometallurgy of nonferrous metals, in particular to a method for selectively extracting copper from iron-copper-matte materials. The method for selectively extracting the copper from the iron-copper-matte materials comprises the following steps that after being subjected to crushing grinding and sulfuric acid adding size mixing, the iron-copper-matte materials are subjected to oxidizing leaching by pumping enriched oxygen into a high-pressure kettle; after oxidizing leaching of the iron-copper-matte materials is completed, solid-liquid separation is carried out to obtain leaching liquid and leaching residues; and after the leaching liquid is subjected to acid adjusting, a rotational flow electrolysis technology is adopted for obtaining a cathode copper product. The iron-copper-matte materials comprise, by weight percentage, 15%-45% of Pb, 35%-60% of Cu, 2%-18% of S, 0.2%-0.8% of Ag, 5%-20% of As and 0.05%-0.6% of Fe. The method is especially suitable for selectively extracting the copper from the iron-copper-matte materials with the low iron content, the rotational flow electrolysis technology is adopted in the copper leaching liquid for electrolysis of settled copper, the yield is higher, and the obtained cathode copper product is few in impurity and high in purity.

Description

technical field [0001] The invention relates to the field of nonferrous metal hydrometallurgy, in particular to a method for selectively extracting copper from iron-copper matte materials. Background technique [0002] Lead-copper matte (commonly known as lead matte) is a by-product mainly containing copper and lead-sulfur compounds produced during the smelting of lead concentrates in bottom-blown furnaces, side-blown furnaces and blast furnaces. In addition, lead dross ( Copper scum) reverberatory furnaces all by-produce lead copper matte, which enriches the copper in the lead concentrate and contains a part of lead, silver and arsenic, which is an important raw material for copper recovery. Due to the difference in raw material composition and operating system, the composition of lead and copper matte produced in each process of lead smelting fluctuates widely. Between 0.05 and 30%. In recent years, there have been many studies on the treatment of lead matte materials, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00
CPCC22B7/007C22B7/04C22B15/0071C25C1/12Y02P10/20
Inventor 蒋朝金杨跃新谢兆凤谭代娣覃小龙黄海飞
Owner CHENZHOU CITY JINGUI SILVER IND CO LTD
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