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现代矿业 2019, Vol. 35 Issue (04) :105-108    DOI:
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新疆某铜镍矿石工艺矿物学研究
孙晶1,冯博2*
1.中国有色金属建设股份有限公司;2.江西理工大学江西矿业工程重点实验室
Study on Process Mineralogy Characteristics of a Cu—Ni Ore in Xinjiang
Sun Jing1,Feng Bo2*
1.China Non—ferrous Metal Industry Construction Co.,Ltd;2.Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology)

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摘要 为给新疆某大型低品位强氧化铜镍硫化矿石的开发利用提供技术依据,进行了工艺矿物学和混合浮选研究。结果表明:①矿石铜品位0075%、镍品位057%,铜、镍均主要以硫化矿的形式存在,其中硅酸镍难以回收;②矿石中的主要目的矿物为黄铜矿和镍黄铁矿,均可通过浮选回收,脉石以橄榄石为主;③镍黄铁矿在镜下呈自形、半自形粒状均质体,其中呈不规则颗粒状、与磁黄铁矿或黄铜矿以多种不同形态嵌连紧密的镍黄铁矿能较好地通过浮选回收,呈微细粒分布、形状不一和呈不规则粒状或蠕虫状及浸染状的镍黄铁矿因嵌布粒度微细而难以实现单体解离,从而不易通过浮选回收;黄铜矿则常呈不规则粒状、浸染状零星嵌布在脉石中;④磨矿(-0.074 mm 80%)—1粗1精2扫、中矿顺序返回闭路浮选流程可获得镍品位为9.17%、铜品位为1.57%,镍回收率68.01%、铜回收率87.37%的混合精矿,铜、镍富集效果较好。
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孙晶
冯博
关键词铜镍矿石   工艺矿物学   浮选     
Abstract: In order to provide technical basis for the development and utilization of a large scale low—grade strong copper nickel oxide sulfide ore in Xinjiang,the mineralogy research of a copper—nickel sulfide ore and bulk flotation was studied.The result shows that ①the grade of copper and nickel are 0.075% and 0.57% separately,both copper and nickel minerals exist in form of sulfide phase,in which garnierite is hard to be utilized; ② The main useful minerals are chalcopyrite and nicopyrite,of which both can be concentrated via flotation,olivine exist as main mineral in gangue; ③The pattern of nicopyrite is idiomorphic or half—idiomorphic homogeneity under microscope,in which nicopyrite particles shown in irregular form or disseminated with pyrrhotite or chalcopyrite in different pattern are easy to be concentrated via flotation.Meanwhile,part minerals are hard to be utilized due to the size of which exist in the pattern of the disseminated or the ore shows typical inequality disseminated grains,which is too fine to be liberated while grinding.Most chalcopyrite shows in the form of irregular and disseminated in gangue sporadically; ④ Mixed concentrate with the nickel grade of 9.17%,copper grade of 1.57%,nickel recovery 68.01%,copper recovery 87.37% was achieved while the grinding particle size was -0.074 mm accounted for 80% through the flow of one roughing one cleaning two scavenging,and middling return to the process in sequence.The enrichment of copper and nickel is relatively well.
KeywordsCopper—nickel ore   Process mineralogy   Flotation     
Fund:

* 国家自然科学基金项目(编号:51404109)。

引用本文:   
孙晶, 冯博.新疆某铜镍矿石工艺矿物学研究[J]  现代矿业, 2019,V35(04): 105-108
SUN Jing, FENG Bo.Study on Process Mineralogy Characteristics of a Cu—Ni Ore in Xinjiang[J]  Modern Mining, 2019,V35(04): 105-108
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