Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China
A refractory phosphate ore obtained from Guizhou, China, contains high amounts of detrimental metal impurities (e.g., Fe, Al, and Mg) which affect the deep wet processing of phosphorus products before use. In this study, mineralogy parameters of the ore such as mineral composition, disseminated part...
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oai:doaj.org-article:dc6ef20b3f2a4f868ebda98e4c61e4c72021-11-25T18:26:35ZProcess Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China10.3390/min111112492075-163Xhttps://doaj.org/article/dc6ef20b3f2a4f868ebda98e4c61e4c72021-11-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1249https://doaj.org/toc/2075-163XA refractory phosphate ore obtained from Guizhou, China, contains high amounts of detrimental metal impurities (e.g., Fe, Al, and Mg) which affect the deep wet processing of phosphorus products before use. In this study, mineralogy parameters of the ore such as mineral composition, disseminated particle size, mineral liberation degree, and intergrowth relationship were investigated using X-ray fluorescence spectrometer (XRF), X-ray powder diffractometer (XRD), and advanced mineral identification and characterization system (AMICS). The mechanism for flotation separation was also discussed. The results showed that the ore was a fine-grained calcareous-siliceous collophanite with high P<sub>2</sub>O<sub>5</sub> grade. The gangue minerals such as quartz, sericite (muscovite), pyrite, and dolomite were finely disseminated and encapsulated by fluoroapatite particles in a rather complex relationship. A double reverse flotation process was carried out based on the separation principle of less flotation and more inhibition. A phosphorous concentrate with a P<sub>2</sub>O<sub>5</sub> grade of 35.53%, SiO<sub>2</sub> content of 5.88%, MgO content of 0.91%, sesquioxide (Fe<sub>2</sub>O<sub>3</sub> + Al<sub>2</sub>O<sub>3</sub>) content of 1.98%, MER value of 8.13%, and phosphorus recovery of 75.04% was obtained. Based on the flotation test results and the analysis of process mineralogy parameters, we concluded that the main causes of difficulty in separation of collophanite are fine disseminated particle size, poor mineral liberation degree, and serious argillization. The selection of foam-controlled collectors, efficient dispersing inhibitors and classified desliming process will be necessary for improving flotation index. These results provide a technical reference for subsequent development and utilization of collophanite resources.Wei XuBo ShiYan TianYue ChenSongqing LiQian ChengGuangjun MeiMDPI AGarticlesedimentary collophaniteAMICSsesquioxidedouble reverse flotationmechanismMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1249, p 1249 (2021) |
| institution |
DOAJ |
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| language |
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| topic |
sedimentary collophanite AMICS sesquioxide double reverse flotation mechanism Mineralogy QE351-399.2 |
| spellingShingle |
sedimentary collophanite AMICS sesquioxide double reverse flotation mechanism Mineralogy QE351-399.2 Wei Xu Bo Shi Yan Tian Yue Chen Songqing Li Qian Cheng Guangjun Mei Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| description |
A refractory phosphate ore obtained from Guizhou, China, contains high amounts of detrimental metal impurities (e.g., Fe, Al, and Mg) which affect the deep wet processing of phosphorus products before use. In this study, mineralogy parameters of the ore such as mineral composition, disseminated particle size, mineral liberation degree, and intergrowth relationship were investigated using X-ray fluorescence spectrometer (XRF), X-ray powder diffractometer (XRD), and advanced mineral identification and characterization system (AMICS). The mechanism for flotation separation was also discussed. The results showed that the ore was a fine-grained calcareous-siliceous collophanite with high P<sub>2</sub>O<sub>5</sub> grade. The gangue minerals such as quartz, sericite (muscovite), pyrite, and dolomite were finely disseminated and encapsulated by fluoroapatite particles in a rather complex relationship. A double reverse flotation process was carried out based on the separation principle of less flotation and more inhibition. A phosphorous concentrate with a P<sub>2</sub>O<sub>5</sub> grade of 35.53%, SiO<sub>2</sub> content of 5.88%, MgO content of 0.91%, sesquioxide (Fe<sub>2</sub>O<sub>3</sub> + Al<sub>2</sub>O<sub>3</sub>) content of 1.98%, MER value of 8.13%, and phosphorus recovery of 75.04% was obtained. Based on the flotation test results and the analysis of process mineralogy parameters, we concluded that the main causes of difficulty in separation of collophanite are fine disseminated particle size, poor mineral liberation degree, and serious argillization. The selection of foam-controlled collectors, efficient dispersing inhibitors and classified desliming process will be necessary for improving flotation index. These results provide a technical reference for subsequent development and utilization of collophanite resources. |
| format |
article |
| author |
Wei Xu Bo Shi Yan Tian Yue Chen Songqing Li Qian Cheng Guangjun Mei |
| author_facet |
Wei Xu Bo Shi Yan Tian Yue Chen Songqing Li Qian Cheng Guangjun Mei |
| author_sort |
Wei Xu |
| title |
Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| title_short |
Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| title_full |
Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| title_fullStr |
Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| title_full_unstemmed |
Process Mineralogy Characteristics and Flotation Application of a Refractory Collophanite from Guizhou, China |
| title_sort |
process mineralogy characteristics and flotation application of a refractory collophanite from guizhou, china |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/dc6ef20b3f2a4f868ebda98e4c61e4c7 |
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