用新型药剂提高云南某铜铁矿石浮铜指标

云南大红山某铜铁矿选矿厂以丁基黄药为捕收剂、730A+2~#油为起泡剂浮选铜,不仅药剂用量较大,生产过程不稳定,而且生产指标不理想。试验对新型、高效药剂的浮选效果进行了研究。结果表明:采用现场磨矿细度、浮选浓度及工艺流程,以DF-64+DF-8(质量配合比为1∶2)为捕收剂、DF-K90为起泡剂,获得了铜品位为23.42%,铜回收率为95.39%铜精矿,不仅提高了铜精矿品位2.42个百分点左右、铜回收率2.39个百分点左右,而且稳定了生产过程,降低了药剂用量和药剂成本,经济和社会效益显著。

Improving Delafossite Flotation Indexes of a Cu-Fe Ore in Yunnan with New Reagents

The copper mineral of a certain copper ore dressing plant in Yunnan Dahongshan was recovered by flotation with butyl xanthate as collector,730A+2# oil as frother,of which the process had the disadvantages of large reagents consump-tion,unstable production process and poor production indexes. The flotation performance of the new efficient reagent was inves-tigated. Results indicated that by using the site grinding fineness,flotation concentration and process in production,and with DF-64+DF-8(The mass ratio 1 : 2)as collector,DF-K90 as frother,final copper concentrate with copper grade of 23. 42% and recovery of 95. 39% with 2. 42 and 2. 39 percentage points improved respectively was obtained. The new reagent can stabilize production process,and reduce reagents dosages and cost,with significant economic and social benefit.