Do you know waste circuit board like computer, TV, mobile phones can be recycled? Do you know the way to remove precious metals from circuit boards? Yes, waste circuit boards can be separated and recycled by burnning, water washing or physical separation method.
Remove precious metals from circuit boards with water type PCB recycling equipment:
The water type PCB recycling equipment adopts the wet gravity separation, metal and nonmetal can be separated. However, a large amount of water needs to be consumed in the whole process, and the waste water generated in the production process contains some heavy metals. If not handled properly, it will cause serious water pollution and land pollution problems. So water PCB recycling equipment is not the best choice for separating waste circuit boards.
The different methods to remove precious metals from circuit board
Remove precious metals from circuit boards through burnning waste circuit boards:
First put the circuit board on a coal stove to soften it. The solder such as tin will melt and drip on the pan or iron plate to collect it. If the circuit board has gold plating, put it in a strong acid solution for further purification. However, the smoke generated by burning waste circuit boards can cause serious respiratory diseases, and this method is not recommended.
PCB recycling machine and the separated metals
Remove precious metals from circuit boards through dry type physical separation method:
Waste PCB equipment also called PCB recycling machine, the machine is used to recycle the waste PCB board for recycling. The working process of PCB recycling machine include shredding, crushing, eddy-vibrating screen, and electrostatic separation, no fire, no water, no chemical. Use the first hummer crusher to crush the PCB board to crude metals, then goes into the second hummer crusher to crush it again to fine metals. And goes into eddy-vibration screen, the bigger part will go into hummer crusher to crush again. Then separate the PCB Board to mixed metal powder and resin fiber with air separator or electrostatic separator.
The process of dry type PCB recycling machine
From the above comparison, it is clear that using PCB recycling machine to remove precious metals from circuit boards is the most reasonable method. So if you are interested in our PCB recycling machine, contact us for more details, DOING as a PCB recycling machine manufacturer, will provide you best solution and best machine.
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