铜录山低品位高含泥氧化铜矿直接浮选工艺试验

铜录山矿已有多年的开采历史，低品位高含泥氧化铜矿石的难选问题一直未得到解决，致使大量同等矿石堆存或废弃。本研究采用直接浮选工艺流程，硫化钠、改性黄药（ＫＤ４）与螯合捕收剂Ｗ－７联用，从含０．９６％Ｃｕ（铜氧化率９８％，结合铜占有率２８％）和０．７５ｇ／ｔＡｕ的原矿，选出优质铜精矿，其品位为３０．３０％Ｃｕ和２３．３０ｇ／ｔＡｕ，铜回收率６６．０９％，金回收率６６．２２％。铜尾矿综合回收铁，铁精矿品位６２．６２％Ｆｅ，铁回收率６８．９４％。较好地解决了低品位高含泥氧化铜矿石综合回收的难题

Direct Flotation Technology of Low Grade Copper Oxide Ore with High Slime in Tonglushan Mine

Since the problem of mineral processing of low grade copperoxideorewithhighslimeinTonglushan Mine has not yet been solved , large amount of ores are piled or discarded . The direct flotation process for these types of ores is studied by authors . In the reagent regime,sodium sulfide , modified xanthate (KD4) and chelating collector (W7) are used together . The good quality copper concentrate can be obtained from the ores containing 0.96% Cu (the oxidation rate of Cu is 98% and the occupation rate of unseparable Cu is 28% ) and 0.75 g/t Au ( inclusion Au is 23% ) . The grades of the concentrate are 30.30% Cu and 23.30 g/t Au with the recovery of Cu 66.09% and of Au 66.22% respectively . Futher recovering iron concentrate from copper tailings,the iron concentrate with the grade 62.62% Fe and the recovery of Fe 68.94% can be obtained . The problem of the comprehensive utilization of the low grade copper oxide ore is better solved .