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A blister copper and process technology, applied in the field of blister copper blowing and refining, can solve the problem of low recovery rate of blister copper, and achieve the effects of satisfying environmental protection, high chemical activity and improving fluidity
Active Publication Date: 2021-06-01
洛南环亚源铜业有限公司
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[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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Embodiment 1
[0043] A blister copper blowing process, comprising the steps of:
[0044] The tailings of brass and brass incinerated in a rotary kiln and the tailings of hazardous waste incinerated in a rotary kiln are mixed and put into a side blowing melting furnace for smelting, and limestone, quartz stone, iron oxide, blue At the same time, oxygen is blown into the charcoal, and it is mixed and blown at 1200°C; the blowing process consists of two stages. In the first stage, the oxide formed by iron oxidation is immediately dissolved in the melt, and with the boiling of the melt and Solid or dissolved quartz flux floating on the surface of the molten pool contacts slagging. The end point of slagging is to observe the furnace mouth, the floating edge of the flue gas descends, the airflow is active, and the surroundings overflow out of the smoke hood in a tumbling shape. At the same time, the flame changes from orange to yellow-green, and then to gray. The flame is powerful and the brightn...
Embodiment 2
[0080]The difference between embodiment 2 and embodiment 1 lies in the difference in the addition amount of each raw material and the difference in process parameters.
Embodiment 3
[0082] The difference between embodiment 3 and embodiment 1 lies in the difference in the addition amount of each raw material and the difference in process parameters.
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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...
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