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Reverberatory furnace pyrorefining method of crude copper with high arsenic and antimony

A pyro-refining and reverberatory furnace technology, applied in the field of non-ferrous metallurgy, can solve the problems of high energy consumption, low impurities that are difficult to remove, poor adaptability of raw materials, etc., and achieve the effect of expanding raw material source channels, meeting process requirements, and meeting production needs.

Inactive Publication Date: 2010-02-24
DONGYING FANGYUAN NONFERROUS METALS
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Problems solved by technology

However, for blister copper with high arsenic and antimony that is difficult to remove impurities, a relatively mature and industrialized refining method has not yet been found.
[0004] The existing technology has poor adaptability to raw materials, which either require high-grade raw materials and low impurities that are difficult to remove, or consume a lot of energy and produce no benefits

Method used

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  • Reverberatory furnace pyrorefining method of crude copper with high arsenic and antimony

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Embodiment Construction

[0018] First of all, the present invention is based on the chemical reaction mechanism, the affinity of impurities to oxygen, and the oxidation sequence of arsenic and antimony is ranked after aluminum, silicon, manganese, zinc, tin, iron and nickel, that is, arsenic and antimony are more difficult to oxidize than the above elements. Therefore, in order to remove arsenic and antimony more completely, the copper solution must contain a higher concentration of cuprous oxide. According to the chemical principle, the oxygen content in the copper liquid reaches 1%, which is equivalent to 9% cuprous oxide, and this concentration exceeds the saturation concentration of cuprous oxide in the copper melt at 1150°C, so the process of the present invention During the operation of the technology, the melt temperature must be controlled at a temperature higher than 1150°C.

[0019] Secondly, there is a certain limit to the combination and dissolution of impurities, otherwise, even if the co...

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Abstract

The invention relates to a reverberatory furnace pyrorefining method of crude copper with high arsenic and antimony which is a pyrorefining method combining melting, redox volatilizing and composite alkaline fusing agent slagging together. When refining the crude copper with high content of arsenic, antimony and other impurities in the reverberatory furnace, the process comprises the following steps: firstly performing fusion volatilization and redox volatilization and slagging with composite alkaline fusing agent to realize multiple stage purification. The invention has the advantage of simple process, high production efficiency and the like.

Description

Technical field: [0001] The invention belongs to the field of non-ferrous metallurgy, and relates to a method for treating crude copper with high arsenic and antimony difficult-to-remove impurities in a reflective refining furnace. Background technique: [0002] With the increasing demand for non-ferrous metal consumption in my country, the supply of various non-ferrous metal concentrates is seriously insufficient, and resources have increasingly become the bottleneck restricting economic development. Efforts should be made to speed up the development of science and technology in the non-ferrous metal industry, and develop new processes to deal with complex polymetallic ores that are difficult to adapt to existing technologies, especially high-arsenic, antimony and low-grade copper ores, so as to alleviate resource shortages and meet production needs. The copper smelting process basically consists of five links: beneficiation - smelting - blowing - fire refining - electrolyti...

Claims

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Application Information

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IPC IPC(8): C22B15/04C22B15/14
Inventor 边瑞民袁俊智申殿邦邵忠山
Owner DONGYING FANGYUAN NONFERROUS METALS
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