Can circuit board gold extraction equipment really extract gold
Gold extraction from used circuit boards has been very popular in recent years. There is a saying “Today’s garbage is tomorrow’s mine”. Our company specializes in producing such a set of used circuit board gold extraction equipment, which just verifies this sentence. Let professionals tell you how the circuit board gold extraction equipment extracts gold. With the popularity of electronic products in various fields, especially the acceleration of the replacement of electronic products such as mobile phones, computers and televisions, a large amount of electronic waste is generated. According to —, in electronic waste, the gold content per ton of discarded electronic equipment is 17 times that of gold mines, and the copper content of computer circuit board gold extraction equipment is 40 times that of copper mines. Hundreds of millions of tons of e-waste are generated every year in the world, which is like a huge “urban mine”. The circuit boards of used mobile phones have the highest gold content. According to the United Nations report, metals such as copper, cobalt, silver, and gold in a mobile phone account for 23% of its weight. About 130 kilograms of copper, 2 kilograms of silver, 0.4 kilograms of gold and 80 grams of palladium can be separated from 1 ton of waste mobile phone circuit boards.
Process flow of gold extraction equipment for waste circuit boards:
Gold extraction equipment from waste circuit boards is used to sort and refine precious metals such as gold, silver, palladium, platinum from electronic waste, precious metal chip components and anode mud. Chips, north-south bridges, storage chips, integrated circuits, and plastic encapsulation field effects that cannot be returned after disassembly are the collective materials that contain the highest amount of gold and silver in the components, and can be used for baking with ozone (ozone can completely destroy the formation of combustion Harmful flue gas), roasting slag adopts dissolving carrier, leaching copper, lead tin, and hydrochloric acid medium to extract gold, platinum and palladium, and extract gold, platinum and palladium. For chip capacitors with high content of silver and palladium, the acid method is used to independently extract silver and palladium. For gold-plated circuit boards and plug-ins, it is recommended to use fluorine-free environmentally friendly gold stripping agent to quickly strip and extract gold. For acoustic surfaces containing silver and palladium, metal encapsulated triodes, and integrated circuits, use a special cutting machine to remove the metal shell and punch out the chip. Then, according to the chip and integrated circuit plan, valuable metals are extracted. For electrolytic capacitors with high aluminum content, they are rolled After crushing, the metal aluminum is directly smelted. For the zener diodes, some varactor diodes, and other glass-encapsulated components, and plastic-encapsulated light-emitting tubes, the valuable metals are extracted after crushing, and the circuit boards are leached with organic acid and subjected to liquid electrolysis. Produce electrolytic copper and palladium-containing circuit boards (the double-sided circuit boards basically contain palladium, and the palladium is used as a copper-plated substrate in the via hole as the wire), and then the palladium is leached with acid, and then the palladium is extracted.