About Precious metal recovery
Precious metal resources are scarce, and mineral resources are non-renewable resources. Therefore, the recovery and recovery of precious metal secondary resources is very meaningful. The precious metal scrap generated in the production or processing process, or all kinds of precious metal-containing devices and materials that have lost their performance and require new treatment, and various objects containing recycled value."Recycling" is the process of processing and processing precious metal scrap and waste materials to restore their original performance and make them new products.
The significance of precious metal recycling:
1# The content of precious metals in secondary resources is much higher than that of the original ore, and the recovery cost is low. 2# Humans produce a lot of precious metals, most of which have entered the industry and people's lives, and the recycling market is large.
Problems faced by precious metal recycling in the jewelry industry:
1# The waste recycling system must be optimized. 2#t improves precious metal recovery and purification technology, improves recovery rate and reduces costs. 3# Solve the pollution problem in the recycling process.
Investment casting process-precious metal loss
Loss of smelting: When smelting precious metals, high-quality crucibles should be selected to prevent the molten metal from infiltrating into the crucible wall and the metal particles falling into the viscous slag; too high temperature will also cause volatilization or serious oxidation of the molten metal; smelting powder In the form of a material, the powder is scattered around and causes loss.
Post time: Jul-01-2020