Crude copper blowing process

Abstract

The invention relates to a crude copper blowing process in the technical field of crude copper smelting. The process comprises the following steps of mixing copper-containing waste materials and copper-containing waste treatment tailings, then adding into a side blowing melting furnace, adding a co-solvent, a reducing agent and fuel, simultaneously blowing oxygen into the furnace, and carrying outmixing and blowing at 1200 to 1250 DEG C; and separately discharging blowing tailings, the crude copper and flue gas, and carrying out discharging after the flue gas is treated. The melting point oflimestone is low, so that melting of quartz stone and iron oxide can be promoted, and the fluidity can be improved. Iron, molybdenum, magnesium, calcium, silicon and the like in the furnace charge areoxidized to form oxide in an oxygen-rich environment, and the oxide is combined with the quartz stone to form tailings, so that the non-copper metal elements are separated from copper, copper in copper oxide and copper sulfide can be reduced through the iron oxide, and the copper content is improved; semi coke is used as fuel, and the content of fixed carbon is high, so that sufficient energy isprovided for combustion, the chemical activity is high, and the effect of a reducing agent can also be achieved; and the reduction rate of the copper can be improved through the cooperation of the several chemical meterials.

Description

technical field [0001] The invention relates to the technical field of blister copper smelting, in particular to a blister copper blowing process. Background technique [0002] Copper smelting enterprises at home and abroad are gradually developing towards the continuous blowing process technology that meets clean production standards. It is necessary to actively seek or develop blowing processes with large production capacity, low investment and operating costs, continuous operation, and environmental protection. . [0003] In copper smelting production, the processes of blowing matte into blister copper include PS converter blowing, flash furnace blowing, top blowing furnace blowing, etc. Due to the differences in the process, the properties of the blowing slag produced by different blowing methods are also different. difference. PS converter and flash furnace, because the furnace can control a certain reducing atmosphere, and there is a relatively static settling molten...

AI Technical Summary

Problems solved by technology

[0005] Although the blowing of matte is completed in the above-mentioned scheme, the direct recovery rate of matte is greater than 92%, which is specifically disclosed in its embodiments as 93.15%, 95.86%, 94.32%, 92.05%, 93.59%, and can be obtained comprehensively. The recovery rate is roughly concentrated in the range of 92%-96%, and the recovery rate of blister copper is still not high and needs to be further improved

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