超细磨对某高冰镍选矿指标优化的试验研究  

Experimental Study on Separation Target Optimization of one High Nickel Matte by Ultrafine Grinding

作　　者：陆斌刚 刘立彦 郑永梅 王春燕 LU Bin-gang;LIU Li-yan;ZHENG Yong-mei;WANG Chun-yan(State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization,Jinchang,Gansu 737100,China;Jinchuan Nickel Cobalt Research&Design Institute Co.,Ltd.,Jinchang,Gansu 737100,China)

机构地区：[1]镍钴资源综合利用国家重点实验室,甘肃金昌737100 [2]金川镍钴研究设计院,甘肃金昌737100

出　　处：《云南冶金》2021年第2期25-28,共4页Yunnan Metallurgy

摘　　要：某高冰镍矿在生产中存在磨矿分级效率低、单体解离度差等问题,导致铜镍分离不彻底、互含严重,选矿指标较差。针对磨矿存在的问题,采用超细磨工艺对磁选合金产品以及浮选铜镍分离指标进行优化。研究结果显示:超细磨后,磁选合金产率降低为5.81%,含硫量也降低为10.53%。同时,与原细度下的指标相比,铜精矿中铜品位提高了0.8个百分点,铜回收率提高了0.23个百分点。镍精矿中,镍回收率提高了0.51个百分点,且铜、镍互含降低,铜镍分离指标得到优化。In the production of one high matte nickel ore,the following problems were exists,such as low grinding and classification efficiency,poor monomer dissociation and so on,which lead to the incomplete separation,serious mutual inclusion of copper and nickel,and bad separation targets.According to the above mentioned problems,the ultrafine grinding process is adopted for optimization of magnetically separated alloy products and the flotation targets of copper and nickel.The study results show:the magnetically separated alloy yield is decreased to 5.81%,the sulfur content is decreased to 10.53% by using of ultrafine grinding.Meanwhile,comparing with the original fineness index,the copper grade in copper concentrate is increased by 0.8%,the copper recovery rate is increased by 0.23%;the nickel recovery rate of nickel concentrate is increased by 0.51%,and the mutual inclusion of copper and nickel is decreased,the separation targets of copper and nickel is optimized.

关 键 词：高冰镍 超细磨 磁-浮联合流程 铜镍分离 指标优化 

分 类 号：TD952[矿业工程—选矿]