(1. 武汉理工大学 资源与环境工程学院，武汉 430070；
2. 新疆瑞伦矿业有限责任公司，哈密 839000；
3. 长沙矿冶研究院有限责任公司，长沙 410012)
摘 要: 新疆哈密的铜镍矿资源居全国第2位，采用化学方法、显微镜观察、SEM和EPMA分析等手段，研究哈密黄山南铜镍矿的化学组成、矿物组成及嵌布特征。结果表明：试样属轻微氧化的中低品位铜镍硫化矿石，其镍、铜的化学元素分析分别为0.62%和0.15%(质量分数)；镍主要以硫化物(镍黄铁矿)和硅酸镍的形式存在。镍黄铁矿形态各异、粒度相对较粗；黄铜矿呈不规则状、粒度极不均匀。哈密黄山南铜镍矿石为星散浸染状构造，结构较为松疏，易生成细泥，恶化分选环境，因此，选择磨矿细度应适宜。现场尾矿中镍黄铁矿的含量很低，多为与磁黄铁矿或脉石毗连镶嵌构成镍的贫连生体，粒度为5~20 μm，再回收镍的幅度较小。
关键字: 哈密铜镍矿；工艺矿物学；镍黄铁矿；选矿
（1. College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. Xinjiang Ruilun Mining Co., Ltd., Hami 839000, China;
3. Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, China）
Abstract:Copper-nickel ore resources in Hami, Xinjiang, ranks the second nationwide in China. Contents of chemical elements, compositions of mineral and disseminations on copper-nickel ore sample to south Huang mountain in Hami were investigated by chemical analysis, microscopic observation, scanning electron microscope (SEM) and electron probe micro analysis (EPMA). The results show that a middle to low-grade copper-nickel ore containing 0.62% nickel and 0.15% copper (mass fraction) by chemical analysis for raw sample is mildly oxidized, and nickle in the ore is predominantly as sulphide, such as pentlandite and a part nickel silicate. Meanwhile, pentlandite includes various forms and the particles is relatively coarse, the contrary chalcopyrite has irregular shape and the particle size is uneven. The samples of south Huang mountain in Hami are comprised of diffuse disseminated and loose structure. As fine mud is easy to come into being, selecting grinding fineness should be appropriate. A nickel content of pentlandite in tailing is very low, and the most is intergrowth nickel with particle size from 5 to 20 μm and pyrrhotite or gangue constitutes adjacent mosaic, so that only a small amount of nickel will be recycled from tailing.
Key words: Hami copper-nickel ore; process mineralogy; pentlandite; mineral processing
