国外某低品位难选硫化铜镍矿选矿工艺研究  

Beneficiation Experiment on Low⁃Grade Refractory Copper⁃Nickel Sulfide Ore from Abroad

作　　者：刘超 陈志强 胡红喜 杨记平 罗传胜 LIU Chao;CHEN Zhiqiang;HU Hongxi;YANG Jiping;LUO Chuansheng(Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,Guangdong,China;State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangzhou 510650,Guangdong,China;Guangdong Province Key Laboratory of Mineral Resource and Comprehensive Utilization,Guangzhou 510650,Guangdong,China)

机构地区：[1]广东省科学院资源利用与稀土开发研究所,广东广州510650 [2]稀有金属分离与综合利用国家重点实验室,广东广州5106500 [3]广东省矿产资源开发与综合利用重点实验室,广东广州510650

出　　处：《矿冶工程》2023年第6期70-73,共4页Mining and Metallurgical Engineering

基　　金：广东省科学院发展专项资金项目(2022GDASZH⁃2022010104)。

摘　　要：针对国外某低品位硫化铜镍矿中镍黄铁矿、黄铜矿与磁黄铁矿三者嵌布关系密切、共生关系复杂、含镁硅酸盐矿物含量高等选矿难点,开展了选矿试验研究。结果表明,对镍品位0.50%、铜品位0.20%的原矿,采用原矿粗磨-中矿细磨-铜镍混合浮选工艺,通过选择性磨矿和添加高效抑制剂CMC,避免了铜、镍矿物的过粉碎和实现了对含镁硅酸盐矿物的选择性抑制,闭路试验获得了镍品位9.70%、铜品位4.75%,镍、铜回收率分别为68.99%、79.85%的铜镍精矿,实现了铜、镍资源的有效回收。According to the difficulties in beneficiation,such as intimate dissemination and complicated intergrowth of pentlandite,chalcopyrite and pyrrhotite,and high content of magnesium⁃bearing silicate minerals,a beneficiation experiment was conducted for a low⁃grade copper⁃nickel sulfide ore from abroad.A flowsheet consisting of rough grinding,fine⁃grinding of middlings,copper⁃nickel bulk flotation was introduced to treat this raw ore with Ni and Cu grades respectively as 0.50%and 0.20%.Adopting selective grinding approach and using high⁃efficient depressant CMC,excessive comminution of copper and nickel minerals can be avoided while magnesium⁃bearing silicate minerals can be selectively depressed.A closed⁃circuit test produced a copper⁃nickel concentrate grading 9.70%Ni and 4.75%Cu at corresponding recoveries of 68.99%and 79.85%,indicating copper and nickel resources were all effectively recovered.

关 键 词：黄铜矿 镍黄铁矿 磁黄铁矿 低品位 硫化铜镍矿 含镁硅酸盐矿物 CMC 阶段磨矿 混合浮选 

分 类 号：TD952[矿业工程—选矿]