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Fire metallurgy process of copper lead zinc mixing ore concentrate

A technology of mixed concentrate and pyrometallurgy, which is applied in the direction of improving process efficiency, can solve problems such as copper-lead-zinc mixed concentrate smelting, and achieve high environmental protection, advanced process flow, and high resource utilization.

Inactive Publication Date: 2008-12-17
XIAN HUAYING INDAL
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Problems solved by technology

[0011] The purpose of the present invention is to provide a pyrometallurgical process of copper-lead-zinc mixed concentrate, which solves the problem that the current pyrometallurgical process in the background technology cannot meet the smelting technology of copper-lead-zinc mixed concentrate containing more than 2% copper question

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Embodiment Construction

[0049] A pyrometallurgical process of copper-lead-zinc mixed concentrate, comprising the following steps

[0050] 1) Smelting of lead and sulfur

[0051] Add sulfur-fixing agent to the copper-lead-zinc mixed concentrate for batching, the amount of added sulfur-fixing agent is determined by the sulfur content in the copper-lead-zinc mixed concentrate, put the prepared charge into the smelting furnace, and heat The smelting reaction is carried out under the following conditions to obtain crude lead and slag matte. Since the specific gravity of lead is greater than that of slag matte and the melting point is lower than that of slag matte, the crude lead is separated; the sulfur content in the copper-lead-zinc mixed concentrate is calculated according to the following reaction equation The amount of sulfur fixative.

[0052] The sulfur-fixing agent mentioned here includes sulfur-fixing agent M and sulfur-fixing agent RO, wherein the sulfur-fixing agent M is iron filings or steel fi...

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Abstract

The invention relates to a pyrometallurgy process for copper, lead and zinc mixed concentrate, comprising the steps that: 1) lead separation, sulfur fixing and melting are carried out; a sulfur-fixed agent is added for burdening; furnace burden after burdening is put into a melting furnace; a melting reaction is carried out at a temperature of 1000 to 1100 DEG C, and crude lead and slag sulfur are obtained; the crude lead is separated; 2) the slag sulfur is separated and melted; rest slag sulfur is separated and melted in reduction atmosphere in a blast furnace and in the condition of high-calcium slag type; zinc in the slag is reduced to be metal zinc which enters into fume when being volatilized, and is recycled by a dust precipitator in a state of zinc oxide; the temperature of the focal area of the blast furnace is increased so as to cause the slag sulfur to be separated and fully react; the crude lead, copper mattes and the slag are fully separated. The process solves the technical problem that current pyrometallurgy process of the background technology can not meet the melting of copper, lead and zinc mixed concentrate with a copper content higher than 2 percent. The process is characterized by advanced process procedure, being environmentally friendly and having high resource recycling rate.

Description

technical field [0001] The invention relates to a pyrometallurgical process of copper-lead-zinc mixed concentrate, in particular to a pyrometallurgical process of copper-lead-zinc mixed concentrate containing more than 2 percent copper. Background technique [0002] Mineral resources are an important material basis for national economic construction. Although my country's main mineral resource reserves are relatively rich, due to continuous development, the remaining reserves are rapidly decreasing, and high-quality mineral deposits are on the verge of exhaustion. In recent years, my country's geological exploration departments have successively discovered and verified copper, lead, zinc, silver polymetallic complex sulfide deposits with large reserves and wide distribution in the Sanjiang area of ​​southwest China. Due to the novel type of polymetallic complex deposit, the ore composition, structure and structure are complex, the minerals are closely embedded with each othe...

Claims

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Application Information

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IPC IPC(8): C22B5/02C22B5/16C22B13/02C22B15/00C22B19/04
CPCY02P10/20
Inventor 李建英彭济时周昌王海王建华李小龙
Owner XIAN HUAYING INDAL
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