[30,000 tons! Recently, South Korea's Posco Iron and Steel Group (POSCO) High Nickel Refining Project, which is designed, supplied core equipment and provided on-site technical support by China Enfei, has officially started. The scale of the project is to deal with about 30,000 tons of high nickel matte per year, using the pressure leaching technology of China's Enfei core expertise, using two-stage atmospheric pressure leaching and one-stage oxygen pressure leaching, and the leaching solution is purified and removed by the extraction process to produce battery-grade nickel sulfate, cobalt sulfate products and by-product anhydrous sodium sulfate.