Flotation and Humic Acid Extraction Test of Zhaotong Lignite
This is an essay in the field of mineral processing engineering. Humic acid is an important part of Zhaotong lignite. In order to extract humic acid efficiently, the optimum flotation conditions of Zhaotong lignite were explored by using the process of direct flotation and reverse flotation. Orthogo...
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| Format: | Article |
| Language: | zho |
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Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2023-12-01
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| Series: | Kuangchan zonghe liyong |
| Subjects: | |
| Online Access: | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2023.06.026 |
| _version_ | 1797383573123104768 |
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| author | Peng Chen Xinwei Bai Yuan Li Chenhu Zhang Shiwei Wang Yaoyao Chen |
| author_facet | Peng Chen Xinwei Bai Yuan Li Chenhu Zhang Shiwei Wang Yaoyao Chen |
| author_sort | Peng Chen |
| collection | DOAJ |
| description | This is an essay in the field of mineral processing engineering. Humic acid is an important part of Zhaotong lignite. In order to extract humic acid efficiently, the optimum flotation conditions of Zhaotong lignite were explored by using the process of direct flotation and reverse flotation. Orthogonal experiments were designed by using the method of oxygen decomposition and alkali solution-acid separation to extract humic acid from flotation cleaned coal, and the optimal conditions of humic acid extraction were explored. The results show that the positive flotation collector consumption is large, and under the condition of surface modification of Span 80, the flotation cleaned coal yield is the highest of 26.64% and ash content is the lowest of 20.08%; the optimum conditions of reverse flotation are laurylamine 5 kg/t, dextrin 3 kg/t and foaming agent 260 g/t, and the optimum flotation indexes are as follows: flotation cleaned coal yield 84.35% and ash 20.52%, flotation tailcoal yield 15.65% and ash 36.75%, and flotation perfection index 12.08; the optimum extraction conditions of oxygen decomposition are as follows: H2O2 concentration 0.7 mol/L, H2O2 activation time 35 min, NaOH concentration 0.3 mol/L, NaOH soaking time 30 min, and the extraction rate of humic acid 37.14%; the optimal extraction conditions of alkali-soluble acid chromatography are as follows: concentration of hydrochloric acid 10%, activation time of hydrochloric acid 30 min, NaOH concentration 0.7 moL/L, NaOH soaking time 30 min, and the extraction yield 43.80%. Reverse flotation can obtain higher yield of high ash flotation clean coal than normal flotation, and the extraction rate is higher when the humic acid of Zhaotong lignite is extracted by alkali solution-acid separation method. |
| first_indexed | 2024-03-08T21:23:00Z |
| format | Article |
| id | doaj.art-221640c11c974997ac80bbf625f8520a |
| institution | Directory Open Access Journal |
| issn | 1000-6532 |
| language | zho |
| last_indexed | 2024-03-08T21:23:00Z |
| publishDate | 2023-12-01 |
| publisher | Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Kuangchan zonghe liyong |
| spelling | doaj.art-221640c11c974997ac80bbf625f8520a2023-12-21T08:27:18ZzhoInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological SciencesKuangchan zonghe liyong1000-65322023-12-0144616917510.3969/j.issn.1000-6532.2023.06.0262023-06chenpengFlotation and Humic Acid Extraction Test of Zhaotong LignitePeng Chen0Xinwei Bai1Yuan Li2Chenhu Zhang3Shiwei Wang4Yaoyao Chen5School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui , Guizhou, ChinaSchool of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui , Guizhou, ChinaGuizhou Coal Product Quality Supervision and Inspection Institute, Liupanshui, Guizhou, ChinaSchool of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui , Guizhou, ChinaSchool of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui , Guizhou, ChinaSchool of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui , Guizhou, ChinaThis is an essay in the field of mineral processing engineering. Humic acid is an important part of Zhaotong lignite. In order to extract humic acid efficiently, the optimum flotation conditions of Zhaotong lignite were explored by using the process of direct flotation and reverse flotation. Orthogonal experiments were designed by using the method of oxygen decomposition and alkali solution-acid separation to extract humic acid from flotation cleaned coal, and the optimal conditions of humic acid extraction were explored. The results show that the positive flotation collector consumption is large, and under the condition of surface modification of Span 80, the flotation cleaned coal yield is the highest of 26.64% and ash content is the lowest of 20.08%; the optimum conditions of reverse flotation are laurylamine 5 kg/t, dextrin 3 kg/t and foaming agent 260 g/t, and the optimum flotation indexes are as follows: flotation cleaned coal yield 84.35% and ash 20.52%, flotation tailcoal yield 15.65% and ash 36.75%, and flotation perfection index 12.08; the optimum extraction conditions of oxygen decomposition are as follows: H2O2 concentration 0.7 mol/L, H2O2 activation time 35 min, NaOH concentration 0.3 mol/L, NaOH soaking time 30 min, and the extraction rate of humic acid 37.14%; the optimal extraction conditions of alkali-soluble acid chromatography are as follows: concentration of hydrochloric acid 10%, activation time of hydrochloric acid 30 min, NaOH concentration 0.7 moL/L, NaOH soaking time 30 min, and the extraction yield 43.80%. Reverse flotation can obtain higher yield of high ash flotation clean coal than normal flotation, and the extraction rate is higher when the humic acid of Zhaotong lignite is extracted by alkali solution-acid separation method.http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2023.06.026mineral processing engineeringzhaotong lignitedirect flotationreverse floatationhumic acidextraction process |
| spellingShingle | Peng Chen Xinwei Bai Yuan Li Chenhu Zhang Shiwei Wang Yaoyao Chen Flotation and Humic Acid Extraction Test of Zhaotong Lignite Kuangchan zonghe liyong mineral processing engineering zhaotong lignite direct flotation reverse floatation humic acid extraction process |
| title | Flotation and Humic Acid Extraction Test of Zhaotong Lignite |
| title_full | Flotation and Humic Acid Extraction Test of Zhaotong Lignite |
| title_fullStr | Flotation and Humic Acid Extraction Test of Zhaotong Lignite |
| title_full_unstemmed | Flotation and Humic Acid Extraction Test of Zhaotong Lignite |
| title_short | Flotation and Humic Acid Extraction Test of Zhaotong Lignite |
| title_sort | flotation and humic acid extraction test of zhaotong lignite |
| topic | mineral processing engineering zhaotong lignite direct flotation reverse floatation humic acid extraction process |
| url | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2023.06.026 |
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