Process Mineralogy and Beneficiation Process of Low-grade Nickel Ores in the Western China
The low-grade nickel resource is very abundant in the western China. To make the best of the low grade nickel ore, we studied the process mineralogy and beneficiation process of nickel ore in the Yangliuping of Sichuan province. The grade of nickel is 0.45% in the nickel ore and the nickel exists in the sulfide including pyrrhotite, nickel pyrite, chalcopyrite primarily. The nickel distributes in pentlandite and magnetite over 90% and the copper does in the chalcopyrite over 95%. The carrier minerals of useful elements tend to concentrate in space for concentration. As is shown in grainsize analysis of three major minerals, there are some more fine-grained grains with the percent of from 10% to 15% (＜40 μm) and from 3.5% to 5.5% (＜20 μm). So there will be some smaller size disseminated sulfide minerals difficulty to liberate in the process of concentration. The liberation degree of sulfide is not high and there are much associativity in the sulfides. Therefore, we should reclaim the sulfide aggregation dominating as pentlandite when concentrating. In addition, the sulphide minerals is so brittle that we should take care of preventing from crashing when grinding. The gangue mineral is mostly metamorphic mineral including serpentine, chlorite and amphibole which is easy to be argillization and difficult to concentrate.
Nickel ores Process mineralogy Concentration Western China
L. X. Zeng B. Y. Chen
Institute of multipurpose utilization of mineral resources, CAGS, Chengdu, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
222-226
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）