EXTRACTION OF PRECIOUS METALS FROM WASTE OF ELECTRONIC INDUSTRY

The lack of an efficient technology for processing poor electronic scraps in the electronic industry, which provides individual processing and financial settlement with a supplier of precious metals, required the development of this technology.

The essence of the technology consists in the sequential enrichment of waste, containing noble metals, followed by electrochemical dissolution of metallized waste.

The scrap of the electronic industry, coming from the supply enterprises, is sent for preliminary disassembly. At this stage, nodes containing precious metals are extracted from computers and other electrical equipment.

- Poor materials which don’t contain precious metals are sent to the extraction of non-ferrous and ferrous metals.
- A rich in precious metals material (printed circuit boards, plug sockets, wires, etc.) is sorted to remove gold and silver wires, gold-plated pins of side connectors of printed circuit boards and other parts.

The selected elements are sent directly to the affinity site where the metals are freed from foreign impurities.

Annual output:
- gold (in the form of Dore metal) - 500 kg
- silver (in the form of Dore metal) - 2000 kg
- platinum (in the form of a concentrate) - 10 kg
- palladium (in the form of concentrate) - 200 kg

The technology complies with the environmental management system, ISO 14001: 2004