Spent solution treatment method of silver electrolyte
A technology of electrolyzed liquid and electrolyte, which is applied in the direction of photographic technology, equipment, photographic auxiliary technology, etc., can solve the problems of complicated operation, high cost, long process, etc., and achieve the effect of improving smelting production capacity, reducing output, and high-efficiency treatment
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Embodiment 1
[0027] In the silver electrolytic refining process, 50L of the open-circuit silver electrolytic liquid containing 100g / L of silver and 30g / L of copper was subjected to the first cyclone electrowinning at a flow rate of 3m / s, and standard silver powder and low silver liquid were produced. The silver content in the low-silver solution is 7g / L, and the copper content is 30g / L; then, a small amount of copper powder is added to replace the silver at 75°C, and the coarse silver powder and the silver-removing solution are obtained. The silver in the silver-removing solution The copper content is 4 mg / L, and the copper content is 36 g / L; again, the desilvering liquid is subjected to the second cyclone electrowinning to produce standard cathode copper and low copper liquid, and the copper content in the low copper liquid is 4g / L L; Finally, return 70% of the low-copper liquid obtained to silver electrolysis, and send 30% of the low-copper liquid to the environmental protection workshop ...
Embodiment 2
[0029] In the silver electrolytic refining process, 50 L of the open-circuit silver electrolytic solution containing 120 g / L of silver and 35 g / L of copper was subjected to the first cyclone electrowinning at a flow rate of 3.3 m / s, and standard silver powder was produced. and low-silver solution, the silver content in the low-silver solution is 8 g / L, and the copper content is 35 g / L; then, a small amount of copper powder is added to replace silver at 80 °C, and coarse silver powder and desilvering solution are obtained. The silver content in the desilvering liquid is 4 mg / L, and the copper content is 40 g / L; Again, the desilvering liquid is carried out the second cyclone electrowinning with the flow velocity of 1.5m / s, and output standard cathode copper and low Copper liquid, the copper content in the low copper liquid is 4 g / L; thereafter, the decopper liquid is subjected to the third cyclone electrowinning at a flow rate of 2 m / s to produce blister copper and decopper liqui...
Embodiment 3
[0031] In the silver electrolytic refining process, 50 L of the open-circuit silver electrolytic solution containing 90 g / L of silver and 25 g / L of copper was subjected to the first cyclone electrowinning at a flow rate of 3.5 m / s, and standard silver powder was produced. and low-silver solution, the silver content in the low-silver solution is 5 g / L, and the copper content is 25 g / L; then, a small amount of copper powder is added to replace silver at 80 °C, and coarse silver powder and desilverization solution are obtained. The silver content in the desilvering solution is 4 mg / L, and the copper content is 28 g / L; again, the desilvering solution is subjected to the second cyclone electrowinning at a flow rate of 2 m / s to produce standard cathode copper and Low-copper solution, the copper content in the low-copper solution is 3 g / L; then, the decopper solution is subjected to the third cyclone electrowinning at a flow rate of 3 m / s to produce blister copper and decopper solutio...
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