摘要:
某铜冶炼炉渣含铜、铁、金、银等有益组分,综合回收价值较高。炉渣中铜矿物主要为辉铜矿、黄铜矿、斑铜矿和单质铜,其次为氧化亚铜;铁矿物主要为磁铁矿和硅酸铁;脉石矿物主要有硅酸铁和玻璃质。依据铜炉渣的矿物组成及矿物的嵌布特征,确定采用缓慢冷却—浮选工艺回收炉渣中的铜,采用一段粗选、三段扫选、一段精选的工艺流程,最终获得了铜品位18.81%、回收率92%的铜精矿,该工艺为铜炉渣的回收利用提供了有益的借鉴。
Abstract:
A copper smelting slag consisted of copper, iron and silver. The copper minerals are mainly chalcocite, chalcopyrite, bornite and elemental copper, followed by cuprous oxide;the iron minerals are magnetite and iron silicate;the gangue minerals are mainly iron and silicate vitreous. Based on the material composition and minerals properties, the slow cooling -flotation process was applied for copper recovery. By one roughing, three scavenging and one cleaning flotation, a cop-per concentrate with a grade of 18. 81% and a recovery of 92% was obtained.
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