Old mobile phones contain a large amount of metal elements such as gold, silver, and copper. These metal elements can be converted into gold in chemical reactions. Through certain methods and techniques, gold can be extracted from old mobile phones.…
For different raw materials containing precious metals, there are different refining methods for separation and recovery of precious metals. The following are some common methods: In short, different raw materials need to choose different methods for refining, and they need…
Catalysts are the main application field of PGMs, so waste catalysts have become the most important secondary resource type of PGMs. Compared with the average grade of PGMs in the original ore (about 0.4 g/t), waste catalysts have become important…
Separation and refining methods of palladium: The main purpose of separation and refining is to remove impurities from the palladium leaching solution, enrich palladium (II) or palladium (IV), and then reduce it to sponge palladium after multiple refining.
PGMs pyrometallurgical recycling refers to the use of base metal collectors such as Cu, Pb, Ni, and Fe under the action of flux and reducing agent, and then pyrometallurgical smelting to make PGMs enter the base metal melt to form…
Driven by domestic and foreign researchers, the comprehensive treatment technology of electronic waste has made rapid progress in recent years, and some of them have been applied in actual industrial production. At present, the most widely used are mechanical treatment…
Wet recycling of PGMs refers to the use of chemical reagents to dissolve waste containing PGMs, convert PGMs into complex ion forms, and then complete the enrichment and purification of PGMs through ion exchange, extraction, precipitation, filtration and other processes;…
In fact, in the research on secondary resource recovery of PGMs, almost all efforts are aimed at achieving higher cost-effectiveness, higher recovery rate and less environmental impact. With the research and development of recycling technology, the concept of environmental orientation…
The recovery technology of waste catalysts containing platinum group metals can be divided into two categories: pyrometallurgy and wet process. Pyrometallurgy includes smelting enrichment method, chlorination volatilization method and incineration method. The commercially applied smelting enrichment method involves the formation…
First, 1450 kg of waste palladium catalyst was pre-treated by roasting and solvent washing, and then the analytical solution was concentrated, filtered, and the residue was recovered. The filtrate was acidified and complexed (acidification and complexation were performed twice each),…
