摘要
某斑岩型铜钼矿石铜、钼品位分别为0.339%和0.022%,现场在磨矿细度为-0.074 mm占60%的情况下,先采用1粗3精3扫、中矿顺序返回流程获得铜钼混合精矿,再进行铜钼分离,但混合精矿Cu、Mo品位分别仅为17.23%、0.629%,Cu、Mo回收率分别仅为86.40%、48.60%。为改善混合浮选指标,在现场磨矿细度下进行了药剂优化研究。结果表明,在选矿工艺流程不变的情况下,用捕收剂Pj-053+荆江钼替代Pj-053+变压器油,最终可获得铜、钼品位分别为18.89%、1.023%,铜、钼回收率分别为92.50%、77.19%的铜钼混合精矿,与现场生产指标比较,混合精矿Cu、Mo品位分别提高了1.66、0.394个百分点,Cu、Mo回收率分别提高了6.10、28.59个百分点,指标改善显著。
The copper and molybdenum content of a low grade porphyry Cu-Mo ore are 0. 339% and 0. 022%, respec- tively. Cu-Mo mixed concentrate which will endure separation of copper from molybdenum, with Cu grade and recovery of only 17.23% and 86.40% ,and Mo grade and recovery of only 0.629% and 48.60% was obtained fristly through the closed-circuit process of one roughing, three cleaning and three scavenging at the grinding fineness of 60% passing 0.074 mm. Reagents opti- mization experiments were conducted at the grinding fineness of on-site process to improve the bulk flotation index. The results indicated that：the collector of P j-053 ＋transformer oil replaced by Pj-053 ＋Jingjiang-molybdenum in the original process, Cu-Mo mixed concentrate with Cu grade and recovery of 18.89% and 92.50% ,and Mo grade and recovery of 1. 023% and 77.19% were obtained respectively. Compared with the on-site process,mixed concentrate of Cu and Mo grade increased 1.66 and 0. 394 percentage points, Cu and Mo recovery increased 6.10 and 28.59 percentage points. Index was improved significantly.
出处
《金属矿山》
CAS
北大核心
2015年第9期65-67,共3页
Metal Mine
关键词
低品位斑岩型铜钼矿
混合浮选
药剂优化
荆江钼
Low grade porphyry Cu-Mo ore, Bulk flotation, Reagents optimization, Jingjian-molybdenum
