Traditional Culture Encyclopedia - Traditional customs - A summary of the principles, methods, phenomena, equations and devices, and things to look out for in copper refining? Thanks!
A summary of the principles, methods, phenomena, equations and devices, and things to look out for in copper refining? Thanks!
Including roasting, smelting, blowing, refining and other processes, with copper sulfide concentrate as the main raw material. Roasting is divided into half-oxidation roasting and full-oxidation roasting ("dead roasting"), removing part or all of the sulfur in the concentrate, while removing part of the arsenic, antimony and other volatile impurities. Smelting is mainly matte smelting, the purpose is to oxidize part of the iron in the copper concentrate or roasted ore, and slag with veinstone, flux, etc. to remove the output of ice copper with high copper content. Blowing can eliminate smoke and recover sulfur in the concentrate. Refining is divided into fire refining and electrolytic refining. Crude copper refining is divided into fire refining and electrolytic refining. Fire refining is the use of certain impurities on the affinity of oxygen is greater than copper, and its oxides are insoluble in copper and other properties, through the oxidation of slag or volatilization to remove.
2CuFeS2→Cu2S+2FeS+S Cu2O+FeS→Cu2S+FeO 2FeS+3O2+SiO2→2FeO-SiO2+2SO2 2FeO+SiO2→2FeO-SiO2
Matte-making melting of the traditional equipment for the blasting furnace, reflector furnace, electric furnace, etc., the new modernization of the large-scale copper refinery Most of the new modern large-scale copper refineries use flash furnace.
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