Tin smelting intermediate material treatment system and treatment method thereof

Abstract

The invention discloses a tin smelting intermediate material treatment system and a treatment method thereof. The treatment system comprises a fuming furnace, a sedimentation electric furnace, a lean slag water quenching pool, a matte ladle, a pulverized coal injection system, a flue gas treatment system and a secondary air supply system. The fuming furnace is respectively connected with the sedimentation electric furnace, the pulverized coal injection system, the flue gas treatment system and the secondary air supply system; and the sedimentation electric furnace is further respectively connected with the lean slag water quenching pool and the matte ladle. According to the treatment system and the method, tin and other materials can be efficiently classified, separated and recycled, the problems that complex tin-containing smelting intermediate materials are difficult to sell and transport and economic losses are caused by discount selling are solved, and hazardous waste is converted into value-added valuable materials to be comprehensively recycled.

Description

technical field [0001] The invention relates to the technical field of tin and copper recovery, and more specifically relates to a tin smelting intermediate material processing system and a processing method thereof. Background technique [0002] In the tin smelting production process, some valuable or harmful impurity elements enter the smelting process along with the associated tin concentrate, and are brought into the subsequent impurity removal process, thus producing various complex tin-containing hazardous waste materials. [0003] At present, the main production process equipment of tin concentrate smelting at home and abroad includes Osmet top blowing furnace, crude tin impurity removal pot, tin electric furnace, fluidized bed furnace, fuming furnace, electric continuous crystallizer, vacuum furnace, tin electrolytic cell system, etc. After the tin concentrate is smelted by the Osmet top-blown furnace, the crude tin produced is sent to the impurity removal pot, and v...

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Problems solved by technology

[0003] At present, the main production process equipment of tin concentrate smelting at home and abroad includes Osmet top blowing furnace, crude tin impurity removal pot, tin electric furnace, fluidized bed furnace, fuming furnace, electric continuous crystallizer, vacuum furnace, tin electrolytic cell system, etc. After the tin concentrate is smelted by the Osmet top-blown furnace, the crude tin produced is sent to the impurity removal pot, and various tin-containing materials are produced after repeated de-impurity removal, including tin Sulfur-copper slag, the tin-containing sulfur-copper slag is a hazardous waste material. According to the current national environmental protection management measures, the sales and transportation of this material are relatively strict and standardized, and must be sold at a discount to the next company. loss of operating profit; in addition, with the subsequent deep de-doping of crude tin, a certain amount of tin-containing anode slime will be produced in the tin electrolysis process, and the tin-containing anode slime is enriched with impurity elements antimony, bismuth, and precious metals Gold and silver also contain a certain amount of copper, and at the same time contain high-grade tin, which are also hazardous waste materials. This material is the same as the above-mentioned tin-sulfur-containing copper slag. If it is sold directly, it will also face the profit caused by the low valuation coefficient loss etc.

[0004] In order to realize the above-mentioned complex tin-containing smelting intermediate materials "eat dry and squeeze out", solve the problems of difficult sales and transportation of hazardous waste materials, and economic losses caused by low valuation coefficients, etc., combined with the actual situation of tin smelting production technology and equipment, a low-cost , high-efficiency, and environmentally friendly comprehensive recycling technology is a technical problem that is currently faced by tin smelting technicians and needs to be solved urgently

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