Flotation recovery of vanadium from low-grade stone coal
| Autor: | Li Wang, Wei Sun, Runqing Liu, Xiao-chuan Gu |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
business.industry Scanning electron microscope Metallurgy Extraction (chemistry) Metals and Alloys Fluorescence spectrometry Vanadium chemistry.chemical_element Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure Tailings chemistry.chemical_compound chemistry Materials Chemistry Coal business Melamine |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 24:1145-1151 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(14)63173-3 |
| Popis: | Pre-concentration of vanadium from low-grade stone coal by the method of desliming–flotation was investigated. The mineral composition and microstructure of stone coal were studied systematically by means of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that selective separation of vanadium-bearing minerals can be achieved by flotation in acidic solution using melamine (EA). The final vanadium concentrate with V2O5 grade of 1.88% and recovery rate of 76.58% is obtained by desliming–flotation process and 72.51% of the raw ore is rejected as tailings. The pre-concentration of vanadium from low-grade stone coal can increase V2O5 grade and decrease the content of acid consuming minerals, which would enable economical utilization of metallurgical vanadium extraction technology. |
| Databáze: | OpenAIRE |
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