Mineralogical characterization and comprehensive utilization of micro-fine tantalum–niobium ores from Songzi
查看参考文献16篇
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文摘
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The mineralogical characteristics of tantalum– niobium ores from Songzi were investigated using mineral liberation analyzer (MLA) and chemical analysis. In particular, the chemical composition, phase composition, particle size, and dissemination characteristics of the ores were studied in detail. Results show that Ta_2O_5 and Nb_2O_5 have grades of 0.013 % and 0.011 %, respectively. The main valuable minerals in the ores are tantalite, columbite, tantalum–niobite, and microlite, and the gangue minerals associated with tantalum–niobium minerals mainly include quartz, kaolinite, illite, feldspar, and mica among others. The minerals are embedded in a complex manner. Tantalum–niobium minerals with most particle sizes of -0.040 mm are disseminated in minerals, such as mica, illite, quartz, and partially intergrown with topaz and zircon, where they could not be easily liberated. Thus, the ores are classified as low-grade, micro-fine, and refractory tantalum–niobium ores. Based on this consideration, the process of classification–gravity concentration–magnetic separation–middlings regrinding and gravity concentration are finally determined and satisfactory indices are obtained. Two rough concentrates are produced: Concentrate I has Ta_2O_5 and Nb_2O_5 grades of 7.0292 % and 3.546 %, respectively, as well as recovery of 49.42 % and 35.46 %. By comparison, Concentrate II has Ta_2O_5 and Nb_2O_5 grades of 7.0292 % and 3.546 %, respectively, as well as recovery of 49.42 % and 35.46 %. |
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来源
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Rare Metals
,2015,34(4):282-290 【核心库】
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DOI
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10.1007/s12598-014-0428-7
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关键词
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Mineralogy
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Tantalum–niobite
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Comprehensive utilization
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Micro-fine particles
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地址
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1.
School of Resources & Civil Engineering, Northeastern University, Shenyang, 110819
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Department of Design, Northeastern University Engineering and Research Institute Co. Ltd, Shenyang, 110014
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1001-0521 |
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学科
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矿业工程 |
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基金
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the Fundamental Research Funds for the Central Universities
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国家自然科学基金
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国家教育部新世纪优秀人才支持计划
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文献收藏号
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CSCD:5416398
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