摘要
针对某铜矿矿石性质发生变化,部分硫化铜矿与黄铁矿发生氧化,选铜作业采用单一石灰难以对硫起到较好的抑制作用,造成铜精矿品位难以提高,铜硫分离困难等一系列问题,需对该选矿厂现场进行工艺优化。工业实践中,组合抑制剂石灰+HXM-2较好地解决了单一石灰法难以抑制黄铁矿的问题,通过降低石灰用量,减少粗选过程中铜的损失,提高粗精矿的回收率。同时,通过铜精选第三槽的改造及石灰添加系统的改造,强化了铜精选过程,最终达到了既提高了铜精矿回收率,又提高了铜精矿铜品位的目的。最终铜精矿铜品位高达22.49%,铜回收率达89.20%,铜精矿品位提高3.07%,回收率提高2.38%。本次工业实践,未增加药剂成本,也未增加额外投资,每年增加总效益额为478.61万元,经济效益显著。
Optimize the process of the plant, aim at the characteristics of a copper mine having changed, part of copper sulfide and pyrite be oxidized, the inhibition effect of the single lime on the sulfur was poor, copper concentrate is difficult to improve, copper and sulphur separation difficulties, such as a series of problems. Combined inhibitor of lime ＋ HXM-2 industrial practice better solved the problem of the single lime method to restrain pyrite, by reducing the dosage of lime, reducing the loss of copper in roughing process, improve the rough concentrate recovery rate. At the same time, through the reconstruction of copper reconstruction of the third slot and lime adding system, to strengthen the copper selection process, finally did not only achieve improve the recovery of copper concentrate, and also improves the copper concentrate grade of copper. The practice effect is good, the final copper concentrate grade of copper is as high as 22.49%, copper recovery rate was 89. 20% the copper concentrate grade of copper concentrate increased by 3.07%, recovery rate increased by 2. 38%. The industrial practice, did not increase the reagent cost, also did not add the extra investment, annual increase the profit of the total amount of 4. 7861 million yuan, the obvious economic value.
出处
《有色金属（选矿部分）》
CAS
北大核心
2017年第1期11-13,42,共4页
Nonferrous Metals（Mineral Processing Section）
