Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions
During the flotation separation process of bastnaesite, it is difficult to separate bastnaesite from fluorite effectively. In this present study, sodium silicate (SS) can effectively improve the flotation separation effect of bastnaesite and fluorite in salicylhydroxamic acid (SHA) systemasa. Throug...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/1/69 |
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| author | Maoyuan Wang Wenliang Xiong Junhui Xiao Yao Guo Jie Deng Da Chen Anni Ouyang Menglin Lei Lijun Zhang |
| author_facet | Maoyuan Wang Wenliang Xiong Junhui Xiao Yao Guo Jie Deng Da Chen Anni Ouyang Menglin Lei Lijun Zhang |
| author_sort | Maoyuan Wang |
| collection | DOAJ |
| description | During the flotation separation process of bastnaesite, it is difficult to separate bastnaesite from fluorite effectively. In this present study, sodium silicate (SS) can effectively improve the flotation separation effect of bastnaesite and fluorite in salicylhydroxamic acid (SHA) systemasa. Through relevant analyses, such as Zeta potential measurements, adsorption capacity tests, Fourier transform infrared (FTIR) spectroscopic analyses and X-ray photoelectron spectroscopy (XPS) tests, the selective suppressor of SS on fluorite was proven. At pH 10, the single mineral flotation results show that with the increase of SS dosage, the flotation recovery of fluorite rapidly decreases from 61.5% to 35.31%, while the flotation rate of bastnaesite is still high (recovery is 80.02%). Then, the experiment of artificial mixed ore proved that the flotation separation of fluorite and bastnaesite was effective under the appropriate dosage of inhibitor. The results of potentiodynamic measurement and an adsorption capacity test showed that the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>SiO</mi><msubsup><mrow><mfenced><mrow><mi>OH</mi></mrow></mfenced></mrow><mn>3</mn><mo>−</mo></msubsup></mrow></semantics></math></inline-formula> structure of SS more easily reacted with fluorite, which further prevented the adsorption of SHA on the fluorite surface. FTIR test results and XPS analysis further showed that SS had a strong binding effect with the Ca site on the fluorite surface, but a weak binding effect with the Ce site on the bastnaesite surface. Consequently, SS can be used as an effective inhibitor in the flotation separation of fluorite and bastnaesite. |
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| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T11:36:47Z |
| publishDate | 2022-12-01 |
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| record_format | Article |
| series | Minerals |
| spelling | doaj.art-359621170f07406993c199304972cc0b2023-11-30T23:39:23ZengMDPI AGMinerals2075-163X2022-12-011316910.3390/min13010069Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline ConditionsMaoyuan Wang0Wenliang Xiong1Junhui Xiao2Yao Guo3Jie Deng4Da Chen5Anni Ouyang6Menglin Lei7Lijun Zhang8Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaSchool of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, ChinaDuring the flotation separation process of bastnaesite, it is difficult to separate bastnaesite from fluorite effectively. In this present study, sodium silicate (SS) can effectively improve the flotation separation effect of bastnaesite and fluorite in salicylhydroxamic acid (SHA) systemasa. Through relevant analyses, such as Zeta potential measurements, adsorption capacity tests, Fourier transform infrared (FTIR) spectroscopic analyses and X-ray photoelectron spectroscopy (XPS) tests, the selective suppressor of SS on fluorite was proven. At pH 10, the single mineral flotation results show that with the increase of SS dosage, the flotation recovery of fluorite rapidly decreases from 61.5% to 35.31%, while the flotation rate of bastnaesite is still high (recovery is 80.02%). Then, the experiment of artificial mixed ore proved that the flotation separation of fluorite and bastnaesite was effective under the appropriate dosage of inhibitor. The results of potentiodynamic measurement and an adsorption capacity test showed that the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>SiO</mi><msubsup><mrow><mfenced><mrow><mi>OH</mi></mrow></mfenced></mrow><mn>3</mn><mo>−</mo></msubsup></mrow></semantics></math></inline-formula> structure of SS more easily reacted with fluorite, which further prevented the adsorption of SHA on the fluorite surface. FTIR test results and XPS analysis further showed that SS had a strong binding effect with the Ca site on the fluorite surface, but a weak binding effect with the Ce site on the bastnaesite surface. Consequently, SS can be used as an effective inhibitor in the flotation separation of fluorite and bastnaesite.https://www.mdpi.com/2075-163X/13/1/69bastnaesitefluoriteflotationsodium silicatesalicylhydroxamic acid |
| spellingShingle | Maoyuan Wang Wenliang Xiong Junhui Xiao Yao Guo Jie Deng Da Chen Anni Ouyang Menglin Lei Lijun Zhang Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions Minerals bastnaesite fluorite flotation sodium silicate salicylhydroxamic acid |
| title | Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions |
| title_full | Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions |
| title_fullStr | Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions |
| title_full_unstemmed | Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions |
| title_short | Selective Adsorption of Sodium Silicate on the Surface of Bastnaesite and Fluorite in Salicylhydroxamic Acid System under Alkaline Conditions |
| title_sort | selective adsorption of sodium silicate on the surface of bastnaesite and fluorite in salicylhydroxamic acid system under alkaline conditions |
| topic | bastnaesite fluorite flotation sodium silicate salicylhydroxamic acid |
| url | https://www.mdpi.com/2075-163X/13/1/69 |
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