This paper briefly describes the studies on roasting copper-cobalt complex sulphides. The concentrate contains 1.5% Cu, 0.13% Co, 42.76% Fe, 43.93% S. The sample was roasted with added sodium sulphate in laboratory pi...This paper briefly describes the studies on roasting copper-cobalt complex sulphides. The concentrate contains 1.5% Cu, 0.13% Co, 42.76% Fe, 43.93% S. The sample was roasted with added sodium sulphate in laboratory pipe-furnace (18x 180mm) under controlled temperature and atmospheric conditions. The effect of parameters such as temperature (610—720℃), time (45—90min), and amount of sodium sulphate (1—5% of fresh sample) on the extraction of copper, cobalt and iron was studied. The recovery of copper and cobalt was found to be 95% and 85% respectively. The studies show that at higher temperature, the dissolubility of iron decreases. Furthemore, with the increase of addition of sodium sulphate, the dissolubility of iron increases.In order to accelerate the speed of desulphurization and improve the quality of exhaust-gas,two-stage roasting operation was also studied. Sample was roasted first at higher temperature such as 800℃, 850℃ or 900℃, then the mixture of roasted and fresh sample was roasted at 650℃. The operation of two-stage roasting has resulted in bringing extraction of iron down to about 1% in the leaching process without much affecting the recovery of other metal values.Both the leaching residues of one-stage and two-stage roasted samples can be utilized as concentrates of hematite (Fe2O3), leaving no useless waste.展开更多
针对金岭铁矿选厂钴精矿经济效益下降的问题,为回收利用其中的硫、铁,提高企业经济效益,对其进行再选试验。结果表明,以乙基黄药为捕收剂,钴精矿经1粗1扫浮硫—浮硫尾矿1次磁选铁(磁场强度96 k A/m)选别,可获得硫品位34.95%、回收率80....针对金岭铁矿选厂钴精矿经济效益下降的问题,为回收利用其中的硫、铁,提高企业经济效益,对其进行再选试验。结果表明,以乙基黄药为捕收剂,钴精矿经1粗1扫浮硫—浮硫尾矿1次磁选铁(磁场强度96 k A/m)选别,可获得硫品位34.95%、回收率80.37%的硫精矿和铁品位60.36%、回收率14.21%的磁精矿,且钴在硫精矿中得到进一步富集,实现了矿产资源的最大化利用,经济效益明显。展开更多
文摘This paper briefly describes the studies on roasting copper-cobalt complex sulphides. The concentrate contains 1.5% Cu, 0.13% Co, 42.76% Fe, 43.93% S. The sample was roasted with added sodium sulphate in laboratory pipe-furnace (18x 180mm) under controlled temperature and atmospheric conditions. The effect of parameters such as temperature (610—720℃), time (45—90min), and amount of sodium sulphate (1—5% of fresh sample) on the extraction of copper, cobalt and iron was studied. The recovery of copper and cobalt was found to be 95% and 85% respectively. The studies show that at higher temperature, the dissolubility of iron decreases. Furthemore, with the increase of addition of sodium sulphate, the dissolubility of iron increases.In order to accelerate the speed of desulphurization and improve the quality of exhaust-gas,two-stage roasting operation was also studied. Sample was roasted first at higher temperature such as 800℃, 850℃ or 900℃, then the mixture of roasted and fresh sample was roasted at 650℃. The operation of two-stage roasting has resulted in bringing extraction of iron down to about 1% in the leaching process without much affecting the recovery of other metal values.Both the leaching residues of one-stage and two-stage roasted samples can be utilized as concentrates of hematite (Fe2O3), leaving no useless waste.
文摘针对金岭铁矿选厂钴精矿经济效益下降的问题,为回收利用其中的硫、铁,提高企业经济效益,对其进行再选试验。结果表明,以乙基黄药为捕收剂,钴精矿经1粗1扫浮硫—浮硫尾矿1次磁选铁(磁场强度96 k A/m)选别,可获得硫品位34.95%、回收率80.37%的硫精矿和铁品位60.36%、回收率14.21%的磁精矿,且钴在硫精矿中得到进一步富集,实现了矿产资源的最大化利用,经济效益明显。
