A microwave-oxygen-enriched method for upgrading and dechlorinating cucl slag
A microwave and oxygen-enriched technology, applied in the direction of improving process efficiency, can solve the problems of large energy loss, increased heat, and difficulty in heat preservation, and achieve the effects of short reaction time, improved chlorine removal rate, and less metal loss
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Embodiment 1
[0025] Such as figure 1 As shown, the microwave-oxygen-enriched CuCl slag upgrading dechlorination method, its specific steps are as follows:
[0026] (1) Material treatment: first, dry 50g of CuCl slag under microwave conditions until the moisture content of CuCl slag is 1.76wt.%, then crush the dried CuCl slag to a particle size of 0.3mm, and spread the crushed CuCl slag to a thickness of Placed in the microwave reaction chamber under the condition of 3mm, the CuCl slag mainly comes from the dechlorination product of the zinc sulfate solution before electrolysis in the wet zinc smelting system, its water content is 40%, and its main phases are CuCl and Cu 2 O; the drying conditions are: microwave power 250W, material thickness 1mm, drying time 5min, the raw material XRD pattern after drying is as follows figure 2 shown;
[0027] (2) One stage of microwave oxygen enrichment: under normal pressure, 4L / h of oxygen is introduced into the microwave reaction chamber, and the te...
Embodiment 2
[0032] Such as figure 1 As shown, the microwave-oxygen-enriched CuCl slag upgrading dechlorination method, its specific steps are as follows:
[0033] (1) Material treatment: first, dry 500g of CuCl slag under microwave conditions until the moisture content of CuCl slag is 2.81wt.%, then crush the dried CuCl slag to a particle size of 0.3mm, and put the crushed CuCl slag into the mixer with blades The ceramic crucible is placed in the microwave reaction chamber, and the CuCl slag is mainly derived from the dechlorination product of the zinc sulfate solution before electrolysis in the wet zinc smelting system. Its water content is 15wt.%, and its main phases are CuCl and Cu 2 O; drying conditions are: microwave power density 500W, material thickness 20mm, drying time 16min;
[0034] (2) One stage of microwave oxygen enrichment: under normal pressure, 40L / h of oxygen is introduced into the microwave reaction chamber, and the temperature of the material treated in step (1) is co...
Embodiment 3
[0039] Such as figure 1 As shown, the microwave-oxygen-enriched CuCl slag upgrading dechlorination method, its specific steps are as follows:
[0040] (1) Material treatment: firstly dry 50Kg CuCl slag under microwave conditions until the moisture content of CuCl slag is 3.21wt.%, then crush the dried CuCl slag to a particle size of 0.1mm, put the crushed CuCl slag into microwave high temperature double Spiral stirred reactor for oxidation roasting, in which CuCl slag mainly comes from the dechlorination product of zinc sulfate solution before electrolysis in the zinc hydrometallurgy system, its water content is 25wt.%, and its main phases are CuCl and Cu 2 O; drying conditions are: microwave power 20KW, material thickness 10mm, drying time 22min;
[0041] (2) A section of microwave oxygen enrichment: under normal pressure, 12m into the microwave reaction chamber 3 Oxygen per hour, control the temperature of the material treated in step (1) to 400°C for 60 minutes, and the d...
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