A method for preparing anode plates by fire refining complex copper-containing materials

Abstract

The invention relates to the pyrometallurgical process in the field of nonferrous metallurgy, in particular to a method for preparing an anode plate by fire refining complex copper-containing materials. The steps of the method are: detecting the content of copper and iron in the complex copper-containing materials; Results Configure the slagging agent, add complex copper-containing materials and slagging agent into the reaction furnace, heat up to the predetermined temperature, pass in compressed air or oxygen-enriched air to stir to carry out the oxidation reaction; after the oxidation is completed, keep it warm for a certain period of time, and then carry out slag removal , After the copper liquid is reduced, it is cast into an anode plate. The beneficial effects of the present invention are: the present invention adopts the compound slag-forming agent to oxidize slag, which improves the fluidity of the slag, and has a low viscosity. At the same time, the copper in the slag is further settled, and the slag content is 90-95% of the original slag content. Copper bottom, with high direct copper recovery rate, short process flow and low production cost.

Description

technical field [0001] The invention relates to a pyrometallurgical process in the field of nonferrous metallurgy, in particular to a method for preparing an anode plate by pyrorefining complex copper-containing materials. Background technique [0002] Copper is an important basic metal, which is widely used in electric power, communication, construction, military industry, transportation and other fields due to its excellent mechanical properties, thermal conductivity, electrical conductivity and corrosion resistance. With economic development, my country has become the largest producer and consumer of copper, with an annual output of nearly 10 million tons of refined copper. [0003] Part of the production of refined copper comes from copper mines developed by nature, and the other part is recovered from secondary copper resources. Traditional copper smelting mainly uses copper ore as the raw material for production. Copper ore is beneficiated to obtain copper concentrate...

AI Technical Summary

Problems solved by technology

[0007] The impurity removal process of the traditional copper fire refining furnace includes oxidation and reduction processes. In the oxidation stage, quartz sand is added as a slagging agent for slagging and impurity removal. This process has low adaptability to complex high-grade copper-containing materials. Traditional The process of slagging will lead to a large amount of pyro-refining slag, high copper content in the slag, and low direct copper recovery rate. Usually, the slag contains more than 26% copper

Since most copper smelting enterprises had a relatively complete smelting process before, that is, there was a front-end process of pyro-refining, and these slags were returned to the front-end process for processing, but now some enterprises only have a single process of pyro-refining, and do not have the slag return to the front-end process. Due to the conditions of the process, the slag is usually sold directly at a discount, which will bring direct economic losses to the enterprise

[0008] The current relevant research focuses on further recycling the slag after the slag is produced by pyro-refining, which cannot meet the needs of enterprises in terms of process flow and equipment investment, and there are few reports on reducing the copper content in slag directly in the pyro-refining process

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