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Method for recycling lead bullion from lead copper matte

A technology of lead matte and crude lead, which is applied in the field of recovering crude lead from lead matte, can solve the problems of low recovery rate of valence metals, and achieve the effects of high lead content, short processing time and low price

Active Publication Date: 2016-10-12
ZHUZHOU SMELTER GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods all have problems such as low recovery rate of valuable metals.

Method used

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  • Method for recycling lead bullion from lead copper matte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (43.23%), Cu (12.13%), Fe (12.78%), Zn (8.87%) and S (18.35%) %).

[0033] A kind of embodiment of the method that the present invention reclaims crude lead from lead matte, its technological process is as figure 1 As shown, it mainly includes the following steps:

[0034] (1) Use a crusher to crush 5050g of lead matte to a particle size of 3-7cm.

[0035] (2) According to the mass ratio of lead matte, soda ash and coke of 100:6:11, weigh the soda ash and coke and mix them with the crushed lead matte to obtain a mixture.

[0036] (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1100° C., and gradually melt the lead matte and become a melt.

[0037] (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1100°C. Stir 4 time...

Embodiment 2

[0042] The raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (41.35%), Cu (11.83%), Fe (13.32%), Zn (8.03%) and S (17.18%) %).

[0043] A kind of embodiment of the method that the present invention reclaims crude lead from lead matte, its technological process is as figure 1 As shown, it mainly includes the following steps:

[0044] (1) Use a crusher to crush 4980 g of lead matte to a particle size of 4 to 8 cm.

[0045] (2) According to the mass ratio of lead matte, soda ash and coke of 100:7:9, weigh soda ash and coke and mix them with the crushed lead matte to obtain a mixture.

[0046] (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1300°C, and gradually melt the lead matte and become a melt.

[0047] (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1300°C. A total of 2 ...

Embodiment 3

[0052] The raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (42.28%), Cu (12.11%), Fe (13.69%), Zn (9.01%) and S (18.24%) %).

[0053] A kind of embodiment of the method that the present invention reclaims crude lead from lead matte, its technological process is as figure 1 As shown, it mainly includes the following steps:

[0054] (1) Use a crusher to crush 4916g of lead matte to a particle size of 1-6cm.

[0055] (2) According to the mass ratio of lead matte, soda ash and coke of 100:5:12, weigh the soda ash and coke and mix with the crushed lead matte to obtain a mixture.

[0056] (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1100° C., and gradually melt the lead matte and become a melt.

[0057] (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1100°C. A total of 6 tim...

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Abstract

The invention discloses a method for recycling lead bullion from lead copper matte. The method comprises the following steps that firstly, after being crushed, the lead copper matte is mixed with sodium carbonate and coke, and a mixture is obtained; secondly, the mixture obtained in the first step is arranged in a smelting furnace to be heated, the mixture is melted into molten mass, then, insulating stirring is conducted, and a stirring tool adopted during insulating stirring is an iron stirring tool; and thirdly, after insulating stirring is over, standing insulating is conducted, the molten mass is layered, the upper layer is enriched copper matte, the lower layer is the lead bullion, and then the lead bullion and the enriched copper matte are independently discharged and collected. The method for recycling the lead bullion from the lead copper matte is short in technology process, the valuable metal recycling rate is high, the lead bullion recycling rate is higher than 90%, the content of lead in the obtained lead bullion is higher than 97%, copper and zinc in the lead copper matte can be enriched, and high-grade raw materials capable of being directly used for copper and zinc smelting are obtained.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, in particular to a method for recovering crude lead from lead matte. Background technique [0002] The lead matte produced during lead smelting and lead matte is a melt whose main components are cuprous sulfide, lead sulfide, zinc sulfide and ferrous sulfide. According to the difference of lead smelting raw materials and the difference of lead smelting process, the composition of lead matte produced also varies greatly, and its typical composition is Pb 10-50%, Cu 10-25%, Fe 10-25%, Zn 5-15%, S 15-25%, the total content can be as high as more than 90%, and a small amount of lead oxide, silver sulfide and other metal compounds are entrained. [0003] At present, there are two types of treatment processes for lead matte: fire method and wet method. In recent years, the process of wet treatment of lead matte has developed rapidly, including roasting-sulfuric acid leaching, acidic...

Claims

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Application Information

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IPC IPC(8): C22B13/02C22B7/00C22B15/00
CPCC22B7/004C22B13/025C22B15/0026Y02P10/20
Inventor 王文军唐亦秋林文军戴慧敏刘敏柳承辉王策
Owner ZHUZHOU SMELTER GRP
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