What are the recycling techniques for metal materials

Xingtai aidu metal materials sales co., ltd. tells you some metal materials recycling tips:

1. Electrolysis silver withdrawal new process

The institute of material recycling applications designed its own electrolytic silver withdrawal equipment, using graphite plate as the cathode, stainless steel drum as the anode, the drum has many fine holes. Sodium citrate and sodium sulfite are electrolyte. The silver-plated parts enter from the end of the drum and are sent out from the end of the drum. The silver on the surface of the plated parts enters the electrolyte, the substrate of the plated parts is completely lossless and can be returned to the application of new electroplating. Silver recovery 97-98%, silver powder purity 99.9%.

2. Recycling application of waste silver and zinc batteries

The waste silver zinc battery contains 52.55% silver and 42.7% zinc. Zinc is a negative electrode, silver oxide is a positive electrode coating on the copper mesh framework. The material regeneration application institute USES dilute sulfuric acid to separate zinc and copper, silver powder indirect ingot. Dilute sulfuric acid leaching of copper in the oxidant, containing zinc solution by concentrated crystal consumption of zinc sulfate, containing copper solution concentrated crystal consumption of copper sulfate. Zinc recovery BBB 0 98%, silver recovery 98%, silver bullion purity BBB 1 99%.

3. Recover silver from scrap film

Institute of material recycling and application (formerly institute of material recycling and application of internal trade department) USES sodium thiosulfate solution to dissolve silver halide on waste film. During the dissolution process, inhibitors are used to prevent the dissolution of gelatin on film. Silver leaching rate BBB 0 99%, recovery 98%, silver purity 99.9%. This method has been applied to industrial consumption.