概况黑矿储藏于日本东北部,它含有多种有价金属,如Cu、Pb、Zn、Au、Ag和其他稀有金属。虽然黑矿很难处理,但同和矿业公司所确定的“SO_2和热水浮选法”却改善了矿物的分选,因而得到较高的金属回收率。从黑矿产出的铜精矿在小坂冶炼厂用闪速熔炼法处理。锌精矿送到秋田锌公司饭岛电解厂处理。铅精矿运到八户冶炼厂,产出的粗铅 Black ore is stored in the northeastern part of Japan and contains a variety of valuable metals such as Cu, Pb, Zn, Au, Ag and other rare metals. Although the black mines are difficult to handle, the SO_2 and hot-water flotation methods identified by Tonghe Mining Company improve mineral separation and result in higher metal recovery rates. The copper concentrate from the black mine is treated by flash smelting at the Kosaka smelter. Zinc concentrate sent to Akita zinc company Iijima electrolytic plant processing. Lead concentrate shipped to Hachinohe smelter, crude lead output