江西某铜硫矿石的综合回收试验研究

Comprehensive Recovery Test of a Copper-sulfur Ore in Jiangxi Province

江西某铜矿中铜硫回收工艺流程较为复杂,在对其铜硫矿石工艺矿物学研究的基础上,为提高铜硫及伴生金银的综合回收率和简化工艺流程,进行了浮选工艺优化条件试验。结果表明,在捕收剂AP-Ⅱ用量为28 g/t、矿细度为-0.074 mm质量占比65%、石灰用量2400 g/t及起泡剂用量21 g/t的条件下,进行“3粗3扫4精”闭路流程试验,获得最终指标为铜精矿中铜、金、银品位分别为20.22%、5.52 g/t、108.37 g/t,回收率分别为82.70%、18.36%、42.94%;硫精矿中硫、金、银品位分别为45.86%、2.13 g/t、12.58 g/t,回收率分别为90.33%、57.08%、40.16%。在保证精矿铜品位的前提下,铜精矿铜回收率提高了1.85%,简化了浮选工艺步骤,减少了药剂消耗,同时获得一定品位的金、银,保证了伴生金银的综合回收利用。

In order to improve the recovery rate of copper sulfur and associated gold and silver and simplify the process,flotation process optimization tests were carried out based on the research of process mineralogy of copper sulfur ore in Jiangxi copper mine.The results show that under the conditions of 28 g/t of collector AP-Ⅱ,65%of ore finness of-0.074 mm,2400 g/t of lime and 21 g/t of foaming agent,the closed-circuit test of"3 coarse,3 sweep and 4 fine"was carried out.The final index is that the grade of copper,gold and silver in copper concentrate is 20.22%,5.52 g/t and 108.37 g/t,and the recovery rates are 82.70%,18.36%and 42.94%,respectively.The grades of sulfur,gold and silver were 45.86%,2.13 g/t and 12.58 g/t,respectively,and the recoveries were 90.33%,57.08%and 40.16%,respectively.Under the premise of ensuring the copper grade of the concentrate,the copper recovery rate of the copper concentrate is increased by 1.85%,which simplifies the flotation process steps,reduces the pharmaceutical consumption,and obtains a certain grade of gold and silver,ensuring the comprehensive recovery and utilization of the associated gold and silver.