组合药剂硫化-浮选某含银氧化铜矿石的试验研究  

Experimental Study on Sulfuration-flotation of Silver-bearing Copper Oxide Ore by Combined Reagents

作　　者：路晓龙 李天恩 LU Xiaolong;LI Tianen(Xi'an Tianzhou Mining Technology Group Co.LTD,Xian 71000,Shanxi,China)

机构地区：[1]西安天宙矿业科技集团公司,陕西西安710000

出　　处：《矿产保护与利用》2023年第2期35-39,共5页Conservation and Utilization of Mineral Resources

摘　　要：为了解决陕西某含银氧化铜矿选矿厂铜回收率低的问题,在矿石性质研究的基础上,进行了详细的选矿试验研究。结果表明,原矿含铜1.24%、银37.2 g/t,铜主要以孔雀石和蓝铜矿的形式存在,银主要赋存于氧化铜矿物中。针对目的矿物嵌布粒度细、硫化速度慢、易泥化的特点,以硫化钠+硫酸铵为组合硫化剂,以异戊基黄药+苯甲羟肟酸为组合捕收剂,采用原矿硫化—浮选—中矿集中再磨再选的工艺流程,最终浮选闭路试验获得了精矿铜品位18.09%、铜回收率89.47%、银品位477.56 g/t、银回收率80.60%的良好指标。该工艺为解决氧化铜矿生产中铜、银选别指标差的问题提供了技术依据。The detailed beneficiation experiments were carried out base on process mineralogy,in order to solve the problem of low recovery rate of copper in a silver-bearing copper oxide concentrator from Shanxi Province.The results showed that the grades of copper and silver in the raw ore were 1.24%,37.2 g/t respectively,and copper mainly existed in the form of malachite and azurite,with silver in the copper oxide minerals.Base on the characteristics of fine distribution size,slow sulfurization speed and easy slime for the copper oxide minerals,the process of sulfurization-flotation-middlings regrinding and separation was conducted,with sodium sulfide+ammonium sulfate as the combined sulfurization reagents,isopentyl xanthate+benzohydroxamic acid as the combined collectors.As a result,a concentration with copper grade of 18.09%,copper recovery of 89.47%,silver grade of 477.56 g/t and silver recovery of 80.60%was obtained.This study provides a guidance for solving the problem of poor separation index of copper and silver in concentrate for concentrator production.

关 键 词：氧化铜矿 中矿集中再磨 硫化—浮选 孔雀石 蓝铜矿 组合捕收剂 组合硫化剂 

分 类 号：TD923.1[矿业工程—选矿] TD952.1