硫化镍铜矿微波助磨和浮选实验研究  

An Experimental Study on Microwave-Assisted Grinding and Flotation of Nickel-Copper Ores

作　　者：李兴 田时泓 牛一帆 陆斌刚 马玉天 谢贤[5] 黄凌云[5] 孙鑫 巨少华[1,2,3] LI Xing;TIAN Shihong;NIU Yifan;LU Bingang;MA Yutian;XIE Xian;HUANG Lingyun;SUN Xin;JU Shaohua(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;National-Provincial Joint Engineering Laboratory of engineering application of Microwave Energy Engineering and Equipment Technology,Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Unconventional Metallurgy of Ministry of Education,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization,Jinchang,Gansu 737104,China;Faculty of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明理工大学微波能与装备技术工程应用国家地方联合实验室,云南昆明650093 [3]昆明理工大学非常规冶金教育部重点实验室,云南昆明650093 [4]镍钴资源综合利用国家重点实验室,甘肃金川737100 [5]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2022年第3期7-17,共11页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51764025);国家重点研究开发计划项目(2019YFC808402)。

摘　　要：针对包裹型难处理硫化镍铜矿磨矿处理能耗高及浮选效率低的问题,研究了微波加热处理对硫化镍铜矿磨矿性能及浮选的影响,揭示了微波作用下硫化镍铜矿的选择性破碎、解离特征及微波处理对硫化镍铜矿浮选的促进效果.结果表明:微波处理后矿物内部出现了明显的晶界裂纹,镍矿从包裹体中产生了解离,且矿物抗压载荷平均下降49.84%,极大地提高了镍铜矿的可磨性.详细地,微波处理15 s的矿物在磨矿处理时间15 min后,小于0.074 mm粒级的质量分数即达到了80%,磨矿处理时间同比原矿缩短了26.3%,微波处理后尾矿中Cu、Ni品位同比原矿分别下降了12.50%和26.79%。Aiming at the problems of high grinding energy consumption and low flotation efficiency of wrapped refractory nickel-copper ores,the effects of microwave heating treatment on grinding performance and flotation of nickel-copper ores were studied.The selective crushing and dissociation characteristics of nickel-copper ores under microwave action and the promotion effect of microwave treatment on the flotation of nickel-copper ores were revealed.The results showed that there were obvious grain boundary cracks in the mineral after microwave treatment,the nickel ores were separated from the inclusion,and the compressive load of the mineral was reduced by 49.84%on average,which greatly improved the grindability of nickel-copper ores.In detail,after 15 min of mineral grinding treatment with microwave for 15 s,the mass fraction of particles less than-0.074 mm reached 80%,and the grinding time was shortened by 26.3%compared with the original ores.After microwave treatment,the grade of Cu and Ni in tailings decreased by 12.50%and 26.79%compared with the original ores.

关 键 词：微波处理 磨矿 硫化镍铜矿 抗压载荷 浮选 

分 类 号：TD952[矿业工程—选矿] TD923