What precious metals are in circuit boards?

In modern life, the replacement of electronic products is very fast, the scrap rate is also very high. Once the electronic products are eliminated or abandoned, they become useless "electronic waste". However, few people know that there are “gold mines” hidden in these scrap electrical equipment, It is PCB boards.

PCB recycling machine

As we know, PCB boards are made by metals and resin, fibers. There are many precious metals in circuit boards, most of the metal is copper, rest are gold, silver, aluminum, platinum, palladium and some other rare metals. Some researches and statistics shows that for 1 ton computer circuit boards, it contains 0.5kg gold, 130kg copper, 10kg iron, 60kg Platinum, 40kg tin, 36kg nickel, 40kg antimony and some other rare precious metals in circuit boards, like palladium, etc. which means each ton of PCB board can extract 300-500g gold while one ton gold mine can only extract 6g gold. That’s why we said the scrap PCB boards are hidden gold mine just around us.

Precious metals in circuit boards

But how could we get precious metals in circuit boards? Today I will introduce a very popular process which is easy to operate also environmental friendly way.

To get precious metals in circuit boards like gold, silver, copper. The first step we need to separate metals and resin of scrap PCB boards. The machine we used is PCB recycling machine. It include shredding, crushing, air separating, electrostatic separating process. After whole process, the metals and resin of PCB boards will be separated. Then we get metals mixed together, and next step we need use different chemical reagents to extract each metal like gold, silver, copper, etc.

PCB recycling machine working process

PCB recycle machine adopts physical way to separate metals and non-metals, there is no air pollution, water pollution, chemical pollution which is totally environmental friendly machine. Also, By using electrostatic separator, the separate rate is very high can reach to 99%.

If you want to know more information about how to get precious metals in circuit boards and PCB recycling machine, welcome to contact with us.