Waste circuit boards
Recently, a batch of Anyang YND 500kVA direct current arc furnaces equipped with independently developed technology departed from Qingdao Port bound for Incheon, South Korea. These units will be delivered to a leading local electronic waste processing enterprise for the extraction of precious metals from discarded circuit boards. This marks the first batch export of China’s medium-sized arc furnaces to South Korea’s electronic recycling sector.
Specifically engineered for South Korean circuit board feedstock containing 25% copper and 30 grams of gold per tonne, the equipment employs Controllable silicon rectification technology. It achieves a grid-side power factor exceeding 0.95 with a power response time of merely 0.1 milliseconds, enabling precise control within the 1300°C smelting range. Through copper capture smelting and electromagnetic stirring, it efficiently separates precious metals including gold, silver, and palladium, achieving a comprehensive recovery rate exceeding 98%—significantly surpassing local traditional equipment standards.
Addressing the pain point of high electrode costs in South Korea, electrode consumption is reduced by 30% compared to similar equipment, yielding annual cost savings exceeding US$80,000. The unit’s emission data integrates with South Korea’s environmental monitoring system, fully complying with stringent e-waste recycling regulations. Upon deployment, each unit processes an average of 1.5 tonnes of circuit boards daily, providing core equipment support for South Korea’s circular economy.
discarded circuit boards
