(1. 武漢理工大學(xué) 資源與環(huán)境工程學(xué)院，武漢 430070；
2. 新疆瑞倫礦業(yè)有限責(zé)任公司，哈密 839000；
3. 長沙礦冶研究院有限責(zé)任公司，長沙 410012)
摘 要: 新疆哈密的銅鎳礦資源居全國第2位，采用化學(xué)方法、顯微鏡觀察、SEM和EPMA分析等手段，研究哈密黃山南銅鎳礦的化學(xué)組成、礦物組成及嵌布特征。結(jié)果表明：試樣屬輕微氧化的中低品位銅鎳硫化礦石，其鎳、銅的化學(xué)元素分析分別為0.62%和0.15%(質(zhì)量分?jǐn)?shù))；鎳主要以硫化物(鎳黃鐵礦)和硅酸鎳的形式存在。鎳黃鐵礦形態(tài)各異、粒度相對較粗；黃銅礦呈不規(guī)則狀、粒度極不均勻。哈密黃山南銅鎳礦石為星散浸染狀構(gòu)造，結(jié)構(gòu)較為松疏，易生成細(xì)泥，惡化分選環(huán)境，因此，選擇磨礦細(xì)度應(yīng)適宜。現(xiàn)場尾礦中鎳黃鐵礦的含量很低，多為與磁黃鐵礦或脈石毗連鑲嵌構(gòu)成鎳的貧連生體，粒度為5~20 μm，再回收鎳的幅度較小。
關(guān)鍵字: 哈密銅鎳礦；工藝礦物學(xué)；鎳黃鐵礦；選礦
（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
