Three main ways to remove metals of waste circuit board

Waste circuit board, as a real "Mine" waiting to be mined, contains many precious metals, such as copper, gold, silver and so on. The metal grade is equivalent to dozens of times that of ordinary minerals. If we can remove metals from these waste circuit board, we will get considerable economic benefit from these precious metals. Therefore, people have came up with three main ways to recycle and reuse waste circuit board in order to remove metals from waste circuit board.

1. Fire burning

The traditional way is fire burning. This is an easy and fast way. People only need to throw the waste circuit board into fire, then the resin fiber will be burning out, and the metals will be left. But this way also has limit. On the one hand, through burning, the quality of metals will be damaged, which will affect the economic benefit ultimately. On the other hand, the black smoke generated by the process will do harm to the environment, which is disobey the requirements of environmental protection.

2. Chemical dissolution

PCB board chemical treatment

The second way is chemical treatment. People put the waste circuit board into the corrosive chemical solution, then the chemical solution will dissolute the non-metals, then to get metals. However, the chemical solution can not only react with the non-metals, but also react with some metals, so the quality of metals will be damaged. Moreover, the price of chemical solution is pretty high, which will lead to the economic benefit reduce.

3. Mechanical crushing and separating

PCB board recycling machine

Mechanical crushing and separating is the third way to remove metals from waste circuit board, and PCB board recycling machine is the most used machine. Through the crushing, waste circuit board will be processed into small particles, then these small particles will be separated into metals and resin fiber by separating. This way doesn't use fire or chemical solution, so it will not damage the quality of metals, the economic benefit will a little higher than the other two ways. Besides, it adopts dry physical separation way to remove metals from waste circuit board, which will not pollute the environment.

Henan Doing Environmental Protection Technology Co., Ltd is a manufacturer of PCB board recycling machine, which has been engaged in the production of metal recycling equipment for more than ten years. So later if you have any interest about PCB board recycling machine, just feel free to contact us!