Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene
Conventional hydrocarbon oil cannot adhere effectively to oxidized coal, resulting in a low yield of clean coal. In this study, a high-speed homogenizer was used to emulsify LDD (laurylamine dipropylene diamine) and kerosene, which enhanced the flotation efficiency of oxidized coal. The flotation re...
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| Format: | Article |
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MDPI AG
2021-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/11/11/1271 |
| _version_ | 1797509243103870976 |
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| author | Qingshan Zhang Chenkai Niu Xiangning Bu Muhammad Bilal Chao Ni Yaoli Peng |
| author_facet | Qingshan Zhang Chenkai Niu Xiangning Bu Muhammad Bilal Chao Ni Yaoli Peng |
| author_sort | Qingshan Zhang |
| collection | DOAJ |
| description | Conventional hydrocarbon oil cannot adhere effectively to oxidized coal, resulting in a low yield of clean coal. In this study, a high-speed homogenizer was used to emulsify LDD (laurylamine dipropylene diamine) and kerosene, which enhanced the flotation efficiency of oxidized coal. The flotation results showed an increase from 4.12% (only kerosene) to 23.33% (emulsified oil). An increase in contact angle indicated that the mixture reagent can increase the hydrophobicity of coal particles, which is attributed to the adsorption of LDD onto the coal particle surface and the decrease of the oil droplet A lower surface tension of LDD allows it to produce a stable layer of froth than the layer generated by kerosene alone. |
| first_indexed | 2024-03-10T05:14:55Z |
| format | Article |
| id | doaj.art-913f37a64aa440d08f157e6bf3f4b454 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T05:14:55Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-913f37a64aa440d08f157e6bf3f4b4542023-11-23T00:32:52ZengMDPI AGMinerals2075-163X2021-11-011111127110.3390/min11111271Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and KeroseneQingshan Zhang0Chenkai Niu1Xiangning Bu2Muhammad Bilal3Chao Ni4Yaoli Peng5Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineeringand Technology, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineeringand Technology, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineeringand Technology, China University of Mining and Technology, Xuzhou 221116, ChinaDepartment of Mining Engineering, Balochistan University of Information Technology Engineering and Management Sciences (BUITEMS), Quetta 87300, PakistanKey Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineeringand Technology, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineeringand Technology, China University of Mining and Technology, Xuzhou 221116, ChinaConventional hydrocarbon oil cannot adhere effectively to oxidized coal, resulting in a low yield of clean coal. In this study, a high-speed homogenizer was used to emulsify LDD (laurylamine dipropylene diamine) and kerosene, which enhanced the flotation efficiency of oxidized coal. The flotation results showed an increase from 4.12% (only kerosene) to 23.33% (emulsified oil). An increase in contact angle indicated that the mixture reagent can increase the hydrophobicity of coal particles, which is attributed to the adsorption of LDD onto the coal particle surface and the decrease of the oil droplet A lower surface tension of LDD allows it to produce a stable layer of froth than the layer generated by kerosene alone.https://www.mdpi.com/2075-163X/11/11/1271flotation of oxidized coallaurylamine dipropylene diamineemulsified kerosenefroth stabilitycoal hydrophobicity |
| spellingShingle | Qingshan Zhang Chenkai Niu Xiangning Bu Muhammad Bilal Chao Ni Yaoli Peng Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene Minerals flotation of oxidized coal laurylamine dipropylene diamine emulsified kerosene froth stability coal hydrophobicity |
| title | Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene |
| title_full | Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene |
| title_fullStr | Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene |
| title_full_unstemmed | Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene |
| title_short | Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene |
| title_sort | enhancement of flotation performance of oxidized coal by the mixture of laurylamine dipropylene diamine and kerosene |
| topic | flotation of oxidized coal laurylamine dipropylene diamine emulsified kerosene froth stability coal hydrophobicity |
| url | https://www.mdpi.com/2075-163X/11/11/1271 |
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