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| Study on process mineralogy of a complex high phosphorus refractory iron ore in Qinghai province |
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Received:August 02, 2022
Revised:August 16, 2022
Accepted:August 17, 2022
Published Online:June 25, 2023
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| DOI： |
| KeyWord:Magnetite; fine particle dispersion and encapsulation; apatite; manganese silicate mineral; |
| Author | Institution |
| Ba Huiwen |
Qinghai Natural Resources Museum Qinghai Geology and Mineral Resources Testing and Application Center |
| LiuYuChuan |
Qinghai Geology and Mineral Resources Testing and Application Center |
| Changzheng |
Qinghai Geology and Mineral Resources Testing and Application Center |
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| Abstract: |
| The process minerals of a refractory iron ore in Qinghai province were studied in detail by means of Polarized light microscopy, mineral automatic Quantitative analysis system (BPMA) , Scanning electron microscope scanning electron microscopy (SEM) , energy dispersive spectrometer (EDS) and chemical analysis. The results show that the total iron content is 27.34% , the magnetic iron content is 16.24% , and the manganese, phosphorus and silicon content are higher. The size of magnetite is very fine, about 17.92% of magnetite is below 0.020 mm. Magnetite contains fine-grained gangue minerals, which can not be effectively dissociated even by fine grinding. The relationship between apatite and magnetite is very close, if not fine grinding, it is easy to join with magnetite into iron concentrate, resulting in excessive phosphorus in the product. According to the research results, it is suggested that the technological process should be fine grinding-wet magnetic separation-reverse flotation dephosphorization. |
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