秘鲁某斑岩型含砷铜钼矿工艺矿物学研究

PROCESS MINERALOGY OF A PORPHYRY COPPER-MOLYBDENUM ORE CONTAINING ARSENIC IN PERU

对秘鲁某斑岩型含砷铜钼矿进行了工艺矿物学研究,查明了矿石中砷、铜、钼等元素的赋存状态,丰富了该类型矿石的矿物学资料,并就影响选矿指标的矿物学因素进行了分析。工艺矿物学研究结果表明,该类型矿石的氧化率比较低,铜钼应具有较高的选矿回收率,选别作业时容易获得较理想的选矿指标,但矿石中的砷会在铜精矿中有显著的富集,应该重视砷黝铜矿在选矿流程中的走向,充分利用砷黝铜矿与黄铜矿之间浮游性的微小差异生产高、低砷铜精矿。

This paper performs a research on process mineralogy of a porphyry copper-molybdenum ore containing arsenic in Peru,by which the mode of occurrence of arsenic,copper,molybdenum in the ore is investigated,thus the mineralogy material for the ore of this type is enriched and an analysis on the mineralogy factors which influence the mineral processing targets is carried on.The results of process mineralogy show that the oxidation rate is quite low in the ore of this type,and the copper and molybdenum are easy to acquire a high recovery during mineral processing circuit,thus it is easy to achieve more ideal mineral processing targets.However,the arsenic in the ore is also of remarkable concentration in the copper-concentrated ore,more attention should be paid on the trend of tennantite in mineral separation process and produce copper concentrate with high and low arsenic by take full advantage of the small difference in the floatable property between the tennantite and chalcopyrite.