China Nonferrous Metallurgy

Waste printed circuit boards contain a variety of hazardous substances and recyclable valuable metals, and their clean and efficient resource disposal is currently a hot spot for domestic and foreign research scholars. Compared with the hydrometallurgy process, the pyrometallurgy process has more advantages in the treatment of waste printed circuit boards, but different furnaces are also different in terms of investment, environmental protection, energy consumption, and metal yield. At present, the commonly used furnace types for processing waste printed circuit boards include blast furnace, Kaldor furnace, side blow furnace, top blow furnace, etc. The top-blowing furnace for processing waste printed circuit boards has the advantages of strong raw material adaptability, flexible process, high precious metal recovery rate, little environmental pollution, and low energy consumption. Moreover, there are mature industrialization practice cases in China, and the process should be promoted.