Blister blowing process

Abstract

The invention relates to a blister copper blowing process in the technical field of blister copper smelting, which comprises mixing copper-containing waste and copper-containing waste treatment tailings, adding them to a side-blowing melting and incinerator, and adding a cosolvent, a reducing agent, and a fuel, At the same time, oxygen is blown in, and mixed blowing is carried out at 1200-1250°C; finally, blowing tailings, blister copper and flue gas are discharged separately, and the flue gas is discharged after treatment. Limestone has a low melting point, which can promote the melting of quartz stone and iron oxide and improve fluidity. Iron, molybdenum, magnesium, calcium, silicon, etc. in the furnace charge are oxidized in an oxygen-rich environment to form oxides, which combine with quartz stone to form tailings, and realize the separation of non-copper metal elements from copper. Iron oxide can convert copper oxide and copper in copper sulfide Reduction, increase copper content, semi-coke as fuel, high fixed carbon, sufficient energy for combustion, high chemical activity, and can also function as a reducing agent; the combination of these can increase the reduction rate of copper.

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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