Method for treating copper scum using converter

A technology of copper scum and converter, which is applied in the field of copper scum treatment by converter, can solve the problems of high production cost, environmental pollution, low metal recovery rate, etc., and achieve the effect of improving the comprehensive utilization rate of resources

Inactive Publication Date: 2009-02-04
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of high energy consumption, serious environmental pollution, low metal recovery rate and high production cost in the current copper scum treatment process

Method used

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  • Method for treating copper scum using converter

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Experimental program
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Effect test

Embodiment 1

[0020] Embodiment one: raw material copper scum composition: lead 68.9%, copper 13.58%, arsenic 5.78%, antimony 0.84%, according to the batching scheme of copper scum: soda ash: iron filings: bituminous coal=100: 10: 5: 5, material After the preparation is completed, add it to the converter twice, first recover the metallic lead in the copper scum at a temperature of 700-800°C, then increase the temperature to 1200°C to recover the lead in a combined state. Place copper matte at a temperature of ~1150°C, lower the temperature to 700-750°C and put rough lead, and remove the scum in the matte copper and rough lead. See Table 2 for technical indicators.

[0021] Table 2: Technical indicators of copper dross converter treatment

[0022] serial number

Embodiment 2

[0023] Embodiment two: raw material copper scum composition: lead 72.02%, copper 12.96%, arsenic 5.44%, antimony 0.75%, according to copper scum: soda ash: pyrite: the batching scheme of bituminous coal=100: 11: 7: 5 will After the materials are prepared, add them to the converter twice, first recover the metallic lead in the copper dross at a temperature of 700-800°C, and then raise the temperature to 1250°C to recover the lead in a combined state. Put matte copper at 1050~1150℃, lower the temperature to 700~750℃ and put crude lead. The obtained technical indicators are shown in Table 3.

[0024] Table 3: Technical indicators of copper dross converter treatment

[0025] serial number

Embodiment 3

[0026] Embodiment three: raw material copper scum composition: lead 67.66%, copper 13.85%, arsenic 5.87%, antimony 0.92%, according to the batching scheme of copper scum: soda ash: iron filings: bituminous coal=100: 9: 5: 5 will material After the preparation is completed, add it to the converter twice, first recover the metallic lead in the copper scum at a temperature of 700-800°C, then increase the temperature to 1200°C to recover the lead in a combined state. Place matte copper at a temperature of ~1150°C, and place rough lead at a temperature lowered to 700-750°C. The obtained technical indicators are shown in Table 4.

[0027] Table 4: Technical indicators of copper dross converter treatment

[0028] serial number

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Abstract

The invention relates to a method for processing copper dross slag by using a converter, which belongs to the technical field of thermometallurgy. Copper dross slag, calcined soda, scrap iron or sulfurous iron ore and soft coal are proportioned in proportion and then are added into a converter for retailoring. The temperature is controlled within the range of from 700 DEG C to 800 DEG C, the smelting lasts for 1.5 hours to 2 hours, so that lead in the metal form in the copper dross slag is separated from copper; then the temperature is increased to the slag overtemperature of 1100 DEG C to 1250 DEG C, the smelting lasts for 2.5 hours to 3 hours, so that lead compound is deoxygenated to produce metal lead, and the copper becomes copper matte to realize the separation of copper and the lead. The dross slag on the copper matte and the wet lead are fished out to obtain the copper matte and the wet lead. Because the operation process of the invention is carried out in the converter, the separation of copper and lead is more complete. The method can solve the problems of high energy consumption, heavy environmental pollution, low metal recovery ratio, high production cost and the like in the prior copper dross slag processing.

Description

1. Technical field [0001] The invention relates to a method for treating copper scum with a converter, belonging to the technical field of pyrometallurgy. 2. Technical Background [0002] The copper dross produced during the electrolytic refining of crude lead generally contains 15-25% copper and 60-80% lead, and also contains Zn, Sn, As, Sb, Co, Ni, Ag, Au and other elements. [0003] At present, most domestic lead smelting enterprises use pyrotechnics to recover valuable metals such as lead, copper, and silver in copper dross. According to the equipment used in the process, it can be divided into blast furnace method, reverberatory furnace method and electric furnace method. The process of treating copper dross with blast furnace has the disadvantages of incomplete separation of copper and lead and low metal recovery rate; reverberatory furnace treatment of copper dross is the most commonly used process at present, and most domestic lead smelting enterprises use this proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/06C22B13/00
CPCY02P10/20
Inventor 包崇军吴张永孙成余贾著红钱清翟灿斌张勇张永平浦恩彬吴红林邹利明李会良胡东莲张红旺赖毅峰张候文雷建华杨建斌陈帅邹建王小丽张浩杰
Owner KUNMING UNIV OF SCI & TECH
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