摘要
黑龙江多宝山铜矿属大型斑岩型铜矿,日处理量达85000t,其中伴生组分金的品位为0.1g/t左右,在大体量下具有回收价值,年产金可达2t。该矿石中伴生组分金的嵌布粒度较细,绝大部分金的嵌布粒度在-0.038mm,-0.038mm粒级中的金占64%,回收金对磨矿细度要求较高。针对该矿石,通过磨矿细度、pH调整剂及捕收剂种类试验,最终将磨矿细度控制在-0.074mm占68%~72%,采用石灰作为调整剂将浮选pH控制在11左右,硫化钠为调整剂,Y89+丁基黄药(1∶4)为组合捕收剂,松醇油为起泡剂,水玻璃作为精选脉石抑制剂,经一粗三精三扫+粗精矿再磨浮选流程后获得Cu品位为20.96%,Cu回收率为90.15%,其中Au品位为4.37g/t,Au回收率为76.55%的铜精矿,与原药剂制度相比,金回收率提高5~6个百分点,但Cu的回收率不受影响。
Duobaoshan Copper Mine is a large porphyry copper mine in Heilongjiang province.Its daily treatment capacity is up to 85000 t,in which the grade of associated component gold is about 0.1 g/t.It has recovery value in large quantity,and the annual gold production can reach 2 t.The disseminated particle size of the associated component gold in the ore is fine,most of the disseminated particle size of gold is-0.038 mm,and the gold in the-0.038 mm particle size fraction accounts for 64%.The recovery of gold requires high grinding fineness.According to the ore,the grinding fineness,pH regulator and collector types were tested,and the grinding fineness was finally controlled at 68%-72%of-0.074 mm,the flotation pH value was controlled at about 11 by using lime as regulator,and sodium sulfide as regulator.Y89+butyl xanthate(1∶4)as combined collector,pine oil as frother,sodium silicate as gangue depressant.Copper concentrate with Cu grade of 20.96%,Cu recovery of 90.15%,Au grade of4.37 g/t and Au recovery of 76.55%was obtained by the flowsheet of one roughing,three cleanings and three scavengings,regrinding and flotation of the roughing concentrate.Compared with the original reagent system,gold recovery was increased by 5~6 percentage points,but the recovery of Cu was not affected.
作者
赖桂华
LAI Guihua(Heilongjiang Duobaoshan Copper Co.,Ltd.Heihe 161416,Hellongjlang,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2021年第4期83-87,共5页
Nonferrous Metals（Mineral Processing Section）
关键词
伴生金
Y89
矿浆pH
磨矿细度
associated gold
Y89
pH value of pulp
grinding fineness
