A safe electrochemical rejection method is: sodium chloride 20 ~ 50g / L, purified water l000mL / L, deplating at room temperature, the deplated parts for the anode (cathode stainless steel plate), the anode current density of 2A / Dm2.
Another method for removing plating with the function of recovering precious metals is: 65g/L of silver cyanide and 68g/L of potassium cyanide. At 20 to 30°C, the rejected part is used as the anode, and the current density is 0.3 to 0.5A. /dm2, retreat until the net. This deplating solution can be used as a silver plating solution to recover additional fluid.
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