用电化学调控浮选方法提高某难选镍矿选矿指标

金属矿山 ›› 2015, Vol. 44 ›› Issue (05): 93-96.

用电化学调控浮选方法提高某难选镍矿选矿指标

张威，王宇斌，余乐，李帅，彭祥玉

西安建筑科技大学材料与矿资学院，陕西西安 710055

出版日期:2015-05-15 发布日期:2015-08-04
基金资助:
* 陕西省科学技术研究发展计划项目（编号：2014SJ-04），河南省科技厅基础研究项目（编号：102300410215），西安建筑科技大学重点学科建设专项基金项目（编号：XK201205）。

Electrochemical Control Flotation on Improving Separation Indexes of a Refractory Nickel Ore

Zhang Wei，Wang Yubin，Yu Le，Li Shuai，Peng Xiangyu

College of Materials & Mineral Resources，Xi'an University of Architecture and Technology，Xi'an 710055，China

Online:2015-05-15 Published:2015-08-04

摘要/Abstract

摘要： 陕西某镍矿石属岩浆熔离型低品位硫化镍矿石，镍品位为0.53%。由于矿石中的主要脉石矿物蛇纹石和滑石易泥化、可浮性好，且有用矿物和脉石矿物难以充分单体解离，因此，现场采用3粗2扫1精1扫精、中矿顺序返回闭路流程仅能获得镍品位为5.12%、镍回收率为68.40%的镍精矿。为提高资源的利用率和企业的效益，对该矿石进行了电化学调控浮选试验。结果表明，以DHN为电化学调控剂，在磨矿细度和选矿工艺流程不变的情况下，获得了镍品位为5.20%、镍回收率为73.78%的镍精矿，与现场精矿比较，镍品位提高了0.08个百分点，但镍回收率大幅度提高了5.38个百分点。该提高精矿指标的方案不仅效果突出，而且便于在现场实施。

关键词: 难选镍矿, 电化学调控浮选, 电化学调控剂DHN

Abstract: A certain magmatic liquation nickel sulfide ore is from Shaanxi Province with nickel grade of 0.53%.Serpentine and talc，as the main gangue minerals，is easy to be slimed and have good floatability，and the valuable minerals are not easy to be liberated from the gangues.By adopting the process of three roughing-one cleaning-two scavenging and middling back to the flowsheet in turn，nickel concentrate could be obtained with only 5.12% Ni and 68.40% recovery.In order to increase the resources utilization and enterprise's benefits，electrochemical control flotation experiments were carried out.The results indicated that：using DHN as electrochemical control agent，nickel concentrate with nickel grade of 5.20% and recovery of 73.78% was obtained under the same grinding fineness and process.Compared with the on-site concentrate，nickel grade was increased by 0.08 percentage points，while the recovery rate was increased by 5.38 percentage points.The method has good performance in improving the concentrate amd is easy to be put into practice as well.

Key words: Refractory nickel ore, Electrochemical regulating flotation, Electrochemical control agent DHN

张威, 王宇斌, 余乐, 李帅, 彭祥玉. 用电化学调控浮选方法提高某难选镍矿选矿指标[J]. 金属矿山, 2015, 44(05): 93-96.

ZHANG Wei, WANG Yu-Bin, YU Le, LI Shuai, PENG Xiang-Yu. Electrochemical Control Flotation on Improving Separation Indexes of a Refractory Nickel Ore[J]. Metal Mine, 2015, 44(05): 93-96.

扫码分享