羟乙基对季铵盐阳离子捕收剂性能的影响

doi:10.12068/j.issn.1005-3026.2023.07.014

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (7): 1019-1025.DOI: 10.12068/j.issn.1005-3026.2023.07.014

羟乙基对季铵盐阳离子捕收剂性能的影响

刘文宝，佟柯霖，刘文刚，赵盼星

(东北大学资源与土木工程学院，辽宁沈阳110819)

发布日期:2023-07-13
通讯作者: 刘文宝
作者简介:刘文宝(1988-)，男，山东临沂人，东北大学副教授.
基金资助:
国家自然科学基金资助项目(52104250); 中央高校基本科研业务费专项资金资助项目(N2101029).

Effect of Hydroxyethyl on Cationic Collector of Quaternary Ammonium Salts

LIU Wen-bao， TONG Ke-lin， LIU Wen-gang， ZHAO Pan-xing

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Published:2023-07-13
Contact: LIU Wen-bao
About author:-
Supported by:
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摘要/Abstract

摘要： 系统研究了羟乙基的引入对季铵盐类捕收剂性能的影响，通过浮选试验、接触角测试、毒性试验、降解试验、表面张力测试、Zeta电位测试、分子动力学分析等方法，研究了N，N-双(2-羟乙基)-N-甲基十二烷基溴化铵(N，N-bis(2-hydroxyethyl)-N-methyldodecyl ammonium bromide， BHMDB)和十二烷基三甲基溴化铵(dodecyl trimethyl ammonium bromide， DTAB)的性能差异，揭示羟乙基对季铵盐阳离子捕收剂性能的影响.结果表明:相比于DTAB，BHMDB具有更好的捕收能力、浮选选择性、pH适应性和疏水性；引入羟乙基降低其毒性和临界胶束物质的量浓度，但降解性变差；羟乙基的引入强化了药剂与矿物表面的氢键作用，增加药剂极性基团的横截面尺寸，使其具有更强的选择性.

关键词: 季铵盐类捕收剂；羟乙基；赤铁矿反浮选；毒性；降解性

Abstract: In order to systematically study the influence of the introduction of hydroxyethyl on the performance of quaternary ammonium salt collectors， flotation test， contact angle test， toxicity test， degradation test， surface tension test， Zeta potential test， molecular dynamics analysis and other methods were adopted in this paper. The performance differences of dodecyl dihydroxyethyl methyl ammonium bromide (BHMDB) and dodecyl trimethyl ammonium bromide (DTAB) were studied， and the influence mechanism of hydroxyethyl on the performance of collector quaternary ammonium salts was analyzed. Compared with DTAB， BHMDB has better collection capacity， flotation selectivity， pH adaptability and hydrophobicity. The introduction of hydroxyethyl reduces the toxicity and critical micelle concentration of the solution， but makes the degradation worse. Through the analysis of the mechanism of the collector， it can be seen that the introduction of hydroxyethyl group strengthens the hydrogen bond between the agent and the mineral surface， increases the cross-sectional area of the polar group of the agent， and makes it more selective.

Key words: quaternary ammonium salt collector; hydroxyethyl; hematite reverse flotation; toxicity; degradability

中图分类号:

TD923.14

刘文宝，佟柯霖，刘文刚，赵盼星. 羟乙基对季铵盐阳离子捕收剂性能的影响[J]. 东北大学学报（自然科学版）, 2023, 44(7): 1019-1025.

LIU Wen-bao， TONG Ke-lin， LIU Wen-gang， ZHAO Pan-xing. Effect of Hydroxyethyl on Cationic Collector of Quaternary Ammonium Salts[J]. Journal of Northeastern University(Natural Science), 2023, 44(7): 1019-1025.

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羟乙基对季铵盐阳离子捕收剂性能的影响

Effect of Hydroxyethyl on Cationic Collector of Quaternary Ammonium Salts

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