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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Embodiment 1
[0038] The main components of copper anode slime are (%) by weight: 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] Prepare a sodium hydroxide solution with a concentration of 50g / L, add copper anode slime to the prepared sodium hydroxide solution at a liquid-to-solid ratio of 6:1, control the reaction temperature at 85°C, stir for 4 hours, and arsenic is leached into the solution. Filter to obtain arsenic immersion solution and arsenic leaching residue. The arsenic leaching solution contains 8.82g / L arsenic, and the arsenic leaching rate is 99.02%.
[0040] The arsenic leaching slag is added to the sulfuric acid solution according to the liquid-solid ratio of 6:1, the acidity of the initial reaction sulfuric acid is 350g / L, and the blowing intensity is 0.6kg / cm 3 , the reaction temperature was 65°C, the reaction oxidation potential was controlled at 380mv, and stirred for 10h. Filter, leaching copper solution and leaching copper sla...
Embodiment 2
[0045] The main components of copper anode slime are (%) by weight: 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] Prepare a sodium hydroxide solution with a concentration of 60g / L, add copper anode slime to the prepared sodium hydroxide solution at a liquid-to-solid ratio of 5:1, control the reaction temperature at 85°C, stir for 4 hours, and arsenic is leached into the solution. Filter to obtain arsenic immersion solution and arsenic leaching residue. The arsenic leaching solution contained 11.58g / L of arsenic, and the arsenic leaching rate was 98.81%.
[0047] The arsenic leaching slag is added to the sulfuric acid solution according to the liquid-solid ratio of 6:1. The acidity of the initial reaction sulfuric acid is 350g / L, the blowing intensity is 0.5kg / cm3, the reaction temperature is 70°C, the reaction oxidation potential is controlled at 400mv, and stirred for 10h. Filter, leaching copper solution and leaching copper slag. ...
Embodiment 3
[0052] The main components of copper anode slime are (%) by weight: 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] Prepare a sodium hydroxide solution with a concentration of 60g / L, add copper anode slime to the prepared sodium hydroxide solution at a liquid-to-solid ratio of 5:1, control the reaction temperature at 85°C, stir for 4 hours, and arsenic is leached into the solution. Filter to obtain arsenic immersion solution and arsenic leaching residue. The arsenic leaching solution contains 15.63g / L arsenic, and the arsenic leaching rate is 99.05%.
[0054] The arsenic leaching slag is added to the sulfuric acid solution according to the liquid-solid ratio of 6:1. The acidity of the initial reaction sulfuric acid is 350g / L, the blowing intensity is 0.5kg / cm3, the reaction temperature is 70°C, the reaction oxidation potential is controlled at 400mv, and stirred for 10h. Filter, leaching copper solution and leaching copper slag. The...
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