Pre-concentration of vanadium-bearing mica from stone coal by roasting-flotation

• Autorzy: Tang J. , Zhang Y. , Bao S. , Liu C.

Identyfikatory

DOI

10.5277/ppmp170132

• Języki publikacji: EN

Abstrakty

EN

In China, stone coal is an important source of vanadium. The use of roasting–floatation for the pre-concentration of vanadium bearing mica from vanadium bearing stone coal was investigated based on its mineralogical characteristics. The results showed that the vanadium occurred in mica minerals and the main gangue minerals were coal, calcite, and quartz. The pre-concentration process comprises three key steps: roasting, desliming, and flotation. The coal was completely removed by roasting at 700 °C for an hour. Slime was concentrated and the subsequent flotation pulp was improved by desliming. Calcite was removed by reverse flotation and mica was concentrated by positive floatation. During the process, the grade of V2O5 was increased from 0.71% to 1.14%, and 46.18% of the tailings were rejected. The leaching rate of vanadium was increased from 30.49% of raw ore to 69.15% of the concentrate which was an increase of about 40% at the same leaching process. This technique may promote the efficient utilization of stone coal resources.

Słowa kluczowe

EN

roasting; flotation; vanadium bearing mica; stone coal

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 1
• Strony: 402--412
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Tang J.

• College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Zhang Y.

• College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

autor

Bao S.

• College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Liu C.

• College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

Bibliografia

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