美国肯奈柯特铜公司犹他分公司在马格纳和阿瑟铜选厂新建了两个尾矿再处理厂,每日共处理尾矿108,000吨,生产铜精矿110吨/日(其中含有20吨铜钼精矿)。原有选厂处理低品位斑岩铜矿112,000吨/日,原矿铜品位0.68％,精矿品位27.1％,回收率89.9％。由于极细颗粒的干扰,使少量有用矿物成分损失于尾矿,若能进行有效的泥砂分选以除去细泥部分,则能进一步回收铜。阿瑟选厂尾矿借重力流向再处理厂,马格 The Kennebot Copper Company Utah Branch of the United States newly opened two tailings reprocessing plants at Magna and Arthur’s copper processing plants to process 108,000 tons of tailings per day and produce 110 tons of copper concentrate (containing 20 tons of copper and molybdenum concentrate). The original processing plant handled 112,000 tons of low-grade porphyry copper ore per day, 0.68% grade copper ore, concentrate grade 27.1%, the recovery rate of 89.9%. Due to the interference of very fine particles, a small amount of useful mineral component is lost to the tailings, and further copper recovery can be performed if effective silt sorting is performed to remove the fine mud fraction. Arthur election plant tailings by gravity flow reprocessing plant, Mag