In addition to the production of gold, silver colored heavy metal byproducts from the genus, but attention should recovering gold and silver from a variety of waste feedstock. There are many varieties of waste gold and silver raw materials, some of which are simple and complex, and it is often necessary to select an appropriate recycling process according to the composition and characteristics of the raw materials. The main waste materials for recycling gold and silver are gold and silver jewellery, used utensils, tools, alloys, turning debris, industrial waste parts, waste liquid, waste residue, various waste cavity rolls (sheets) and fixing liquids. Cotton, hot water bottle fragments, as well as gold nibs, gold signs, couplets and catalysts. The electronics industry is a large user of modern gold and silver, and should pay attention to recovering gold and silver from their waste originals.
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