Mineralogical factors affecting the separation behavior of Ta-Nbbearing minerals in the gravity field : mineral grain size, liberation, and association relationship

• Autorzy: Cheng Hongwei , Xu Jian , Wang Shoujing , Lv Zihu , Wei Fushuai , Zhao Dengkui , Wu Dongyin

Identyfikatory

DOI

10.37190/ppmp/174504

• Języki publikacji: EN

Abstrakty

EN

Gravity separation is the primary method used to beneficiate Ta-Nb-bearing minerals, however, it performs poorly in low-grade and fine-grained ores. A comparative study of gravity separation products (concentrate, middlings, and tailings) reveals the factors affecting the separation behavior of Ta-Nb-bearing minerals in the process combined with a spiral chute and shaking table from the perspective of mineralogy. The results reveal that columbite-tantalite is the principal Ta-Nb-bearing mineral. As the grinding time increases, the grade of Ta and Nb in concentrate increases significantly. The grain size of columbite-tantalite in the concentrate is the coarsest, followed by that in the middlings, and the finest in the tailings, which are mainly distributed in the range of -150+38 μm, -75+20 μm, and -38 μm, respectively. The liberation degree of columbite-tantalite in the concentrate and tailings is positively correlated with grinding time, while that in the middlings is negatively correlated with grinding time. The density of columbite-tantalite-bearing particles in concentrate is mainly distributed above 3 or even 4, due to the high liberation degree of the columbite-tantalite in the concentrate, as well as the high amount of rich intergrowth associated with heavy minerals. The density of Ta-Nb-bearing mineral particles in the middlings and tailings is predominantly distributed in D<3, owing to columbite-tantalite mainly associated with lighter gangue minerals such as quartz, albite, and orthoclase. It demonstrates that the liberation degree is not the most essential factor in determining columbite-tantalite separation behavior in the gravity field, and the mineralogical characteristics of columbite-tantalite including grain size, association relationship, and particle density, may be more important. The results of this investigation can provide theoretical support for the strengthening separation of low-grade tantalum-niobium ore.

Słowa kluczowe

EN

separation behavior; gravity field; mineralogical characteristic; columbite-tantalite; association relationship; liberation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 6
• Strony: art. no. 174504
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Cheng Hongwei

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

autor

Xu Jian

• Sinosteel Maanshan General Institute of Mining Research Co., Ltd., Maanshan 243000, China

autor

Wang Shoujing

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

autor

Lv Zihu

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

autor

Wei Fushuai

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

autor

Zhao Dengkui

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

autor

Wu Dongyin

• Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, Henan, China
• Key Laboratory for Polymetallic Ores’ Evaluation and Utilization, MNR, Zhengzhou, 450006, Henan, China
• Northwest China Center for Geosience Innovation, Xi’an, 710054, Shanxi, China

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