There are many types of PCB, and the substrate is mainly a single layer or a plurality of layers, a glass cloth base or a composite epoxy resin copper clad plate with plastic pins on it. The metals contained in the PCB include basic metals (aluminum, copper, iron, nickel, lead, tin, zinc, etc.), precious metals and rare metals (gold, silver, palladium, rhodium, selenium), among which the copper content is high. The main components of plastics are mainly about 25% of C-H-O polymers (polyethylene, polypropylene, polyester, polycarbonate and phenolic), halides with a content of less than 5% and nitrogen-containing polymers with a content of less than 1%. The main component of the inert oxide is about 15% silicic acid, about 6% alumina, and about 6% alkali and basic oxides, about 3% of other oxides and barium carbonate and mica.
The composition and content of the elements in the boards of different electronic devices are different. For example, the precious metal content of PCB in TV sets is less than that of computers, and the content of iron, lead and nickel is much. The main components in computer motherboards and circuit boards are resin and fiberglass, plastic, copper, iron, alloys, and the like.
The most important prerequisite for the physical separation of different materials is to allow the different components in the board to be fully dissociated during the crushing process.
Copper and other metals in used motherboards have significant economic and environmental benefits. Taking copper as an example, China's copper mines are mostly lean ore, with a grade of about 0.5%. It takes about 200T of copper ore to extract 1T copper, and 3T waste gravel while mining 1T copper ore. Therefore, from waste Recycling 1T scrap copper is equivalent to reducing 600T waste.
As a professional metal and PCB recycling manufacturer and provider,BSGH is committed to producing high quality and low cost PCB recycling equipment，can help you get more money and profits by recycling PCB.
Therefore, if you have any question, you can:
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