Extraction method of valuable metal in copper anode mud
An extraction method, copper anode slime technology, which is applied in the field of non-ferrous metallurgy, can solve the problems of long process flow and complicated operation, and achieve the effect of short process flow, simple operation and effective recovery
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[0037] Example 1:
[0038] The main components of copper anode slime are (%) in weight percentage: Cu 21.35, As 5.34, Au 0.35, Ag 8.96, Te1.60, Se 4.80, Pb 8.14, Sb 4.85, Bi 2.21.
[0039] The preparation concentration is 50g / L sodium hydroxide solution, the copper anode mud is added to the prepared sodium hydroxide solution according to the liquid-solid ratio of 6:1, the reaction temperature is controlled at 85°C, and the mixture is stirred for 4h, arsenic is leached into the solution. Filter to obtain arsenic leaching solution and arsenic leaching residue. The arsenic leaching solution contains 8.82g / L of arsenic, and the leaching rate of arsenic is 99.02%.
[0040] The arsenic leaching residue is added to the sulfuric acid solution according to the liquid-solid ratio of 6:1, the initial reaction sulfuric acid acidity is 350g / L, and the blast intensity is 0.6kg / cm 3 , The reaction temperature is 65℃, the oxidation potential of the reaction is controlled to 380mv, and the reaction ...
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[0044] Example 2:
[0045] The main components of copper anode slime are calculated in weight percentage (%): Cu 19.85, As 5.86, Au 0.32, Ag 8.01, Te1.24, Se 3.65, Pb 8.95, Sb 4.79, Bi 2.36.
[0046] The concentration is 60g / L sodium hydroxide solution, the copper anode slime is added to the prepared sodium hydroxide solution according to the liquid-solid ratio of 5:1, the reaction temperature is controlled at 85°C, and the mixture is stirred for 4h, arsenic is leached into the solution. Filter to obtain arsenic leaching solution and arsenic leaching residue. The arsenic leaching solution contains 11.58g / L of arsenic, and the leaching rate of arsenic is 98.81%.
[0047] The arsenic leaching residue was added to the sulfuric acid solution according to the liquid-solid ratio of 6:1, the initial reaction sulfuric acid acidity was 350g / L, the blast intensity was 0.5kg / cm3, the reaction temperature was 70℃, the reaction oxidation potential was controlled to be 400mv, and the reaction was...
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[0051] Example 3:
[0052] The main components of copper anode slime are (%) in weight percentage: Cu 12.58, As 7.89, Au 0.38, Ag 9.48, Te2.03, Se 5.64, Pb 10.12, Sb 9.85, Bi 7.55.
[0053] The concentration is 60g / L sodium hydroxide solution, the copper anode slime is added to the prepared sodium hydroxide solution according to the liquid-solid ratio of 5:1, the reaction temperature is controlled at 85°C, and the mixture is stirred for 4h, arsenic is leached into the solution. Filter to obtain arsenic leaching solution and arsenic leaching residue. The arsenic leaching solution contains 15.63g / L of arsenic, and the leaching rate of arsenic is 99.05%.
[0054] The arsenic leaching residue was added to the sulfuric acid solution according to the liquid-solid ratio of 6:1, the initial reaction sulfuric acid acidity was 350g / L, the blast intensity was 0.5kg / cm3, the reaction temperature was 70℃, the reaction oxidation potential was controlled to be 400mv, and the reaction was stirred f...
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