非洲某钽铌砂矿矿石性质及预选工艺研究

金属矿山 ›› 2015, Vol. 44 ›› Issue (02): 63-67.

非洲某钽铌砂矿矿石性质及预选工艺研究

张成强^1,2,3,4，张红新^1,2,3，李洪潮^1,2,3，王守敬^1,2,3

1.中国地质科学院郑州矿产综合利用研究所，河南郑州 450006；2.国家非金属矿产资源综合利用工程技术研究中心，河南郑州450006；3.国土资源部多金属矿评价与综合利用重点实验室，河南郑州 450006；4.东北大学资源与土木工程学院，辽宁沈阳 110819

出版日期:2015-02-15 发布日期:2015-07-29
基金资助:
基金项目国土资源行业公益专项（编号：201211069）。

Study on Property and Pre-separation for a Tantalum-niobium Placer Deposit in Africa

Zhang Chengqiang^1,2,3,4，Zhang Hongxin^1,2,3，Li Hongchao^1,2,3，Wang Shoujing^1,2,3

1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources，Chinese Academy of Geological Sciences，Zhengzhou 450006，China；2.National Engineering Research Center for Multipurpose Utilization of Nonmetallic Mineral Resources，Zhengzhou 450006，China；3.Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ore，Ministry of Land and Resources，Zhengzhou 450006，China；4.College of Resources and Civil Engineering，Northeastern University，Shenyang 110819，China

Online:2015-02-15 Published:2015-07-29

摘要/Abstract

摘要： 为了给中国某矿业公司开发非洲某钽铌砂矿提供依据，首先对该矿矿石进行了工艺矿物学研究，结果表明：矿石中钽、铌的含量分别达到了97.4 g/t和1 044.2 g/t，远远超过了工业开采指标要求；有用矿物除铌铁矿外，还伴生钛铁矿、锡石、锆石以及独居石、钍石等，脉石矿物则主要为石英、长石；有用矿物嵌布粒度较粗，且基本都已经单体解离，同时它们与石英、长石的重选分离难易度处于“较易”范围；矿石中+3 mm粒级的产率达21.10%，但钽、铌在其中的分布率只有3.04%和1.33%。根据工艺矿物学研究结果，采用原矿按3 mm筛分抛尾、筛分精矿跳汰抛尾、跳汰精矿按0.5 mm分级摇床精选的工艺流程进一步进行了预选试验，获得了预选精矿产率为0.71%，Ta₂O₅、Nb₂O₅、Sn、ZrO₂品位分别为1.21%、12.93%、7.12%、14.97%，相应回收率分别为89.45%、90.04%、87.16%、70.58%的较好指标，并使钛、钍、铪、铈也得到了富集。下一步将对预选精矿开展有用矿物互相分离的深选试验。

关键词: 钽铌砂矿, 矿石性质, 预选工艺, 综合回收

Abstract: In order to provide technical basis on development of a tantalum niobium placer in Africa for a Chinese mining company,process mineralogy research is carried out on the ore.The results indicated that,the content of tantalum and niobium reaches 97.4 g/t and 1 044.2 g/t respectively,much higher than the industrial mining requirements.Besides niobite and ilmenite,there are useful minerals of cassiterite,zircon and monazite,thorium also associated.Gangue minerals are mainly quartz,feldspar; useful minerals are disseminated in relatively coarser size and somehow have already been liberated,and the degree of liberation from quartz and feldspar by gravity separation is "easier"; yield rate of the ore in +3 mm grade account for 21.10%,but distribution rate of tantalum and niobium is only 3.04% and 1.33% respectively.According to the process mineralogy,pre-separation experiments on run-of-mine ore are made,including the run-of-mine classified at 3 mm,and the coarse concentrate discarded by jig further,then classification by 0.5 mm and through cleaning separation by shaking table respectively.Pre-separation concentrate with yield rate of 0.71%,Ta₂O₅,Nb₂O₅,Sn,ZrO₂ grade of 1.21%,12.93%, 7.12% and 14.97% respectively,and the corresponding recovery rate of 89.45%,90.04%,87.16%,70.58% was obtained,meanwhile titanium,thorium,hafnium,cerium have also been enriched.Valuable minerals in pre-separation concentrate separated from each other will be further researched.

Key words: Tantalum-niobium ore, Ore property, Pre-separation process, Comprehensive utilization

张成强, 张红新, 李洪潮, 王守敬. 非洲某钽铌砂矿矿石性质及预选工艺研究[J]. 金属矿山, 2015, 44(02): 63-67.

ZHANG Cheng-Qiang, ZHANG Hong-Xin, LI Hong-Chao, WANG Shou-Jing. Study on Property and Pre-separation for a Tantalum-niobium Placer Deposit in Africa[J]. Metal Mine, 2015, 44(02): 63-67.

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