Precious metals are widely used in many industrial fields due to their excellent corrosion resistance, good electrical conductivity and high catalytic activity. But its reserves are lower than global production. Fortunately, we can obtain them from other sources. Electronic waste (especially in waste circuit boards) is an important resource, which contains more than 90% of precious metals. Well, how do we recover precious metals from electronic waste?
Physical separation usually refers to use waste circuit board recycling machine to recover precious metals from electronic waste. Its first few processes are also dismantling, shredding or crushing. After crushing, there will be an eddy-vibrating screen to control the size of particle. Only small enough particles can pass through the screen, those big particles will be stopped and sent back to the crushing for crushing completely. Then the air separator and electrostatic separator will separate the precious metals from non-metals.
Physical separation adopts dry type separation method, which won't produce any pollution to environment. Besides, the physical method won't damage the quality of metals, which can be sold in the market at a good price. The cost of physical separation is slightly higher, because different capacity has different cost.
