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A method for leaching copper from lead matte

A lead matte and leaching technology, which is applied in the field of leaching copper from lead matte, can solve the problems of lead smelting enterprises such as economic loss, low metal recovery rate, and low valuation coefficient, and solve the problems of large equipment investment, small air pollution, The effect of simple process and operation

Active Publication Date: 2018-03-06
CHENZHOU CITY JINGUI SILVER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in raw material composition and operating system, the composition of lead matte produced in each process of lead smelting fluctuates widely, and the lead content and copper content fluctuate between 1-45% and 10-70% respectively. If it is directly sold as copper raw material For copper smelting enterprises, lead metal is not valued, and the valuation coefficients of gold, silver, copper and other metals are not high, resulting in economic losses for lead smelting enterprises
[0003] For a long time, due to the complex composition of lead matte, most of them have been blown in the copper smelting converter to recover copper. However, this method has high energy consumption, low metal recovery rate, serious environmental pollution and harsh operating conditions. And other issues

Method used

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  • A method for leaching copper from lead matte
  • A method for leaching copper from lead matte
  • A method for leaching copper from lead matte

Examples

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Embodiment 1

[0025] see figure 1 , which is a process flow diagram of leaching copper from lead matte according to an embodiment of the present invention. As an embodiment of the present invention, the method for leaching copper from lead matte includes the following steps.

[0026] 1) Weigh 2.3 tons of lead matte, after successively crushing by tiger's mouth and crushing by ball mill, lead matte powder is obtained; wherein, by weight, the lead matte composition is: Pb: 2.45%, S: 17.62%, Cu: 26.81 %, Fe: 21.16%.

[0027] 2) Add sulfuric acid to the lead matte powder, wherein the concentration of sulfuric acid is 150g / L, and the addition amount is 18.4 cubic meters, stir evenly to obtain a slurry; pass steam into the slurry to raise the temperature of the slurry to 60°C , while stirring for 1 hour; 2 minutes before pumping into the high-pressure reactor, add 30Kg calcium lignosulfonate to the slurry, stir evenly, and obtain a pulped material; it should be noted that this step can be carri...

Embodiment 2

[0035] see figure 1 , which is a process flow diagram of leaching copper from lead matte according to an embodiment of the present invention. As an embodiment of the present invention, the method for leaching copper from lead matte includes the following steps.

[0036] 1) Weigh 2.5 tons of lead matte, after successively crushing by tiger's mouth and pulverizing by ball mill, lead matte powder is obtained; wherein, by weight, the lead matte composition is: Pb: 6.34%, S: 9.35%, Cu: 24.24 %, Fe: 22.03%.

[0037] 2) Add sulfuric acid to the lead matte powder, wherein the concentration of sulfuric acid is 140g / L, and the addition amount is 17.5 cubic meters, and stir evenly to obtain a slurry; pass steam into the slurry to raise the temperature of the slurry to 65°C , while stirring for 1.2 hours; 1 minute before pumping into the autoclave, add 40Kg lignin to the slurry, and stir evenly to obtain a pulped material; it should be noted that this step can be carried out in a slurry...

Embodiment 3

[0045] see figure 1 , which is a process flow diagram of leaching copper from lead matte according to an embodiment of the present invention. As an embodiment of the present invention, the method for leaching copper from lead matte includes the following steps.

[0046] 1) Weigh 3 tons of lead matte, and successively pass through tiger's mouth crushing and ball mill pulverization to obtain lead matte powder; wherein, by weight, the lead matte composition is: Pb: 8.17%, S: 12.45%, Cu: 20.95 %, Fe: 19.87%.

[0047]2) Add sulfuric acid to the lead matte powder, wherein the concentration of sulfuric acid is 225g / L, the addition amount is 15 cubic meters, stir evenly to obtain a slurry; pass steam into the slurry to raise the temperature of the slurry to 70°C , while stirring for 1.5 hours; 3 minutes before pumping into the high-pressure reactor, add 60Kg sodium lignosulfonate to the slurry, stir evenly, and obtain a pulped material; it should be noted that this step can be carri...

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Abstract

The invention discloses a method for leaching copper out of lead matte. The method for leaching the copper out of the lead matte includes the steps that sulfuric acid is added into the lead matter, a sizing agent is obtained, and steam is introduced into the sizing agent to make the temperature of the sizing agent rise; an adding agent is added into the sizing agent, a slurrying material is obtained, it is stopped to introduce steam into the slurrying material, oxygen is introduced into the slurrying material to perform oxidizing leaching till the temperature of the slurrying material is not risen any more, a reaction product sizing agent is obtained and is filtered, and leaching residues and leaching liquid containing copper are obtained. According to the method for leaching the copper out of the lead matte, the lead matter serves as a raw material, the reaction condition is accurately controlled by means of steam heating, and therefore the leaching-out rate of the copper is increased. Thus, the method for leaching the copper out of the lead matte is high in raw material adaptability, and simple in procedure and operation, the copper leaching-out rate is high, pollution to the atmosphere is small, the recycling rate of the copper in the lead matter can be increased, and therefore waste of copper resources can be avoided.

Description

technical field [0001] The invention relates to the technical field of metal hydrometallurgy, in particular to a method for leaching copper from lead matte. Background technique [0002] Lead matte is a by-product produced during pyroprocessing (such as bottom blowing furnace, side blowing furnace, blast furnace, reverberatory furnace) during lead smelting, mostly PbS, Cu 2 Co-melt of sulfides such as S and FeS. Due to the difference in raw material composition and operating system, the composition of lead matte produced in each process of lead smelting fluctuates widely, and the lead content and copper content fluctuate between 1-45% and 10-70% respectively. If it is directly sold as copper raw material For copper smelting enterprises, lead metal is not priced, and the valuation coefficients of gold, silver, copper and other metals are not high, resulting in economic losses for lead smelting enterprises. [0003] For a long time, due to the complex composition of lead mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B15/00C22B13/00
CPCC22B7/007C22B13/045C22B15/0071Y02P10/20
Inventor 杨跃新覃小龙蔡练兵谢兆凤熊德强欧亚晖蒋兆慧蒋朝金
Owner CHENZHOU CITY JINGUI SILVER IND CO LTD
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