Analysis of precious metal recycling technology from waste circuit boards
1. Physical treatment technology Physical treatment technology, also known as mechanical treatment technology, is a long-standing method for recovering metals from electronic waste. It mainly relies on the differences in physical properties between materials, such as density, conductivity, magnetism, etc., and enriches valuable substances through steps such as disassembly, crushing, and sorting. Although physical treatment technology has the advantages of low cost and low pollution, the recovery of precious metals still faces challenges because the content of precious metals in printed circuit boards is extremely low. Therefore, precious metal products obtained by various physical treatment technologies often require further processing. Currently commonly used physical recovery methods include impact crushing, extrusion crushing, shear crushing, high-speed eddy current crushing, etc. 2. Heat treatment technology Heat treatment technology, a method of separating and extracting precious metals through high-temperature processes, has attracted much attention in recent years. It uses the changes in the physical and chemical properties of precious metals at high temperatures, such as melting point and vapor pressure, to enrich and extract precious metals through processes such as heating, smelting, and distillation. Although heat treatment technology has a high recovery efficiency, it also faces challenges such as high energy consumption and difficulty...
Learn More 
