某铁矿及伴生铜锌矿物的回收试验研究  

Experiment research on mineral processing of iron ore associated copper and zinc

作　　者：邓丽红 周晓彤 关通 付广钦 DENG Lihong;ZHOU Xiaotong;GUAN Tong;FU Guangqin(State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangzhou 510650,China;Institute of Resources Comprehensive Utilization,Guangdong Academy of Sciences,Guangzhou 510650,China;Key Laboratory of Mineral Resources Development and Comprehensive Utilization of Guangdong Province,Guangzhou 510650,China)

机构地区：[1]稀有金属分离与综合利用国家重点试验室,广东广州510650 [2]广东省科学院资源综合利用研究所,广东广州510650 [3]广东省矿产资源开发和综合利用重点实验室,广东广州510650

出　　处：《中国矿业》2021年第6期159-164,共6页China Mining Magazine

基　　金：广东省科技计划项目资助(编号:2017B030314046);广东省科学院科技计划项目资助(编号:2018GDASCX-0109)。

摘　　要：某铁矿含铁25.78%、含铜0.24%、含锌0.33%,铁矿物品位低、嵌布粒度细,采用一次性磨矿-磁选的选矿工艺,难以获得品位大于60%的铁精矿,伴生的低品位铜、锌矿物也一直未能有效回收。本文采用再磨-弱磁选-浮选的选矿工艺,对该矿石进行了铁、铜、锌的综合回收试验研究。结果表明:采用磨矿细度-0.074 mm含量75.25%、再磨细度-0.043 mm含量95.30%的铁粗精矿再磨-磁选工艺回收铁矿物;石灰、水玻璃、硫化钠为调整剂,DY1和乙黄药为组合捕收剂浮选回收铜矿物;硫酸铜为活化剂、丁黄药和2#油为组合捕收剂浮选回收锌矿物,获得了铁精矿品位66.02%、回收率80.22%,铜精矿品位19.03%、回收率55.60%,锌精矿品位48.20%、回收率65.88%的试验指标,使该矿石中的铁矿物、伴生铜矿物和锌矿物均得到了有效的回收,为提高难选低品位铁资源综合利用率的研究提供了技术借鉴。An iron ore contains iron 25.78%,copper 0.24%and zinc 0.33%.Due to its low location and fine dissemination particle size,it is difficult to obtain an iron concentrate with grade of more than 60%by using the beneficiation process of one-grinding magnetic separation,and the associated low-grade copper and zinc minerals have not been effectively recovered.In this paper,the process of regrinding-weak intensity magnetic separation-flotation is adopted to study the comprehensive recovery of iron,copper and zinc from the ore.The results show that iron concentrate with the grade of 66.02%and recovery of 80.22%,copper concentrate with the grade of 19.03%and recovery of 55.60%,zinc concentrate with the grade of 48.20%and recovery of 65.88%are obtained,by using regrinding-magnetic separation with grinding fineness of 75.25%-0.074 mm and regrinding fineness of 95.30%-0.043 mm in the process of recovering iron minerals,lime+Na 2SiO 3+Na 2S as regulators,DY1 and ethyl xanthate as combined collector in the copper flotation,and CuSO 4 as activator,butyl xanthate and 2#oil as collectors in the zinc flotation.The iron,copper and zinc in the ore have been effectively recovered,which provides a technical reference for improving the comprehensive utilization rate of refractory low-grade iron resources.

关 键 词：铁矿 铜矿物 锌矿物 再磨 浮选 

分 类 号：TD95[矿业工程—选矿]