Extracting metals from scrap electrical appliances requires certain skills and equipment, and it is also necessary to pay attention to safety and environmental protection. Here are some suggestions to help you extract metals more efficiently: 1. **Classification and disassembly**: - First, classify the electrical appliances, such as separating various electrical appliances such as computers, refrigerators, and televisions. - According to the type of electrical appliance, disassemble each component one by one, paying special attention to the circuit boards, cables, connectors, and casings, which usually contain more metals. 2. **Use appropriate tools**: - Using tools such as screwdrivers, pliers, and wire cutters can effectively help you disassemble different components. - If conditions permit, you can use power tools to speed up the disassembly. 3. **Pre-treatment steps**: - A hot air gun or a desoldering station can be used on the circuit board to remove electronic components to facilitate subsequent metal extraction. - The wires and connectors generally contain copper and other metals, and tools are needed to strip the insulation layer. 4. **Metal extraction methods**: - Copper: Extract copper from wires and cables. Usually use a wire stripper for rough stripping and then manually sort it. - Aluminum and steel: Usually in various housings and structural parts, disassembled and screened for collection. - Precious metals: such as gold and silver are usually found in circuit boards and certain electronic components. Chemical agents can be used, but professional knowledge and equipment are required. 5. **Equipment support**: - If conditions permit, metal separators and shredders can be used to improve efficiency. 6. **Safety precautions**: - Wear goggles and gloves to protect yourself during disassembly and processing. - Note that some waste electrical appliances may contain hazardous substances such as lead, mercury, etc., so be careful when handling them. - Using chemical methods to extract metals requires good ventilation and relevant chemical knowledge. 7. **Environmentally friendly disposal**: - Non-recyclable electronic waste needs to be properly handled and cannot be discarded at will. - If you are not sure how to deal with certain materials, you can consult a local professional disposal company. With the above steps and precautions, you can extract metals from waste electrical appliances more effectively, but you must pay attention to safety and environmental protection when operating.