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我厂处理的低品位矿石,原矿含銅0.1～0.2％,所得精矿品位在2～3％,含鉄高达40～50％,大部分是黄铁矿。为了既要抑制黄鉄矿又要不影响銅和金的回收率下降,选择了对黄鉄矿作用较弱的黑药做捕集剂,制訂出先选出高品位銅精矿,再选出含金的黄铁矿,以后再进一步富集金的方案。使用黑药作捕集剂的小型試驗表明,原矿品位0.11％时,回收率为89.13％,虽然比使用黄药时为低,但精矿品位达到5～6％,比使用黄药时提高两倍以上。如果增加精选,精矿品位还可以再提高。工业性試驗采用1次粗选2次精选4次扫选流程,添加黑药35～40克/吨、浮选油10～20克/吨。原矿品
I plant handling low-grade ore, ore containing 0.1 to 0.2% copper, the resulting concentrate grade 2 to 3%, containing up to 40 ~ 50%, mostly pyrite. In order to not only inhibit the ore but also affect the recovery rate of copper and gold decline, the weakness of the selected Huangpi miners do collectors, to develop a first choice of high-grade copper concentrate, and then select the containing Gold pyrite, gold and then further enrich the program. Small trials using black drug as a collector showed that the recovery was 89.13% at 0.11% crude ore grade, although the concentrate grade was 5-6% lower than when using xanthate and increased by two Times more. If you increase the selection, concentrate grade can also be increased. The industrial test adopts 1 rough selection twice and 4 times intensive selection process, adding 35 to 40 grams / ton of black drug and 10 to 20 grams / ton of flotation oil. The original mineral