乳化捕收剂强化煤泥浮选研究进展
Research Progress of the Emulsified Collector in Enhancing Coal Slime Flotation
安茂燕 1廖寅飞 2解恒参 3赵美霞3
作者信息
- 1. 江苏建筑职业技术学院 交通工程学院,江苏 徐州 221116;江苏建筑职业技术学院 江苏省生物质综合利用工程研究中心,江苏 徐州 221116
- 2. 中国矿业大学 化工学院,江苏 徐州 221116
- 3. 江苏建筑职业技术学院 江苏省生物质综合利用工程研究中心,江苏 徐州 221116
- 折叠
摘要
与传统药剂(烃类油)相比,乳化捕收剂能降低油水界面张力,在水中的分散度高,可快速有选择性地吸附在煤表面,改善煤表面的疏水性,提高浮选效率,能够有效解决捕收性能差、选择性差和油耗高的问题.介绍了乳化捕收剂(普通乳状液和微乳液)的结构及形成机理,分析了机械搅拌、超声乳化和射流乳化三种制备乳化捕收剂的方法及优缺点,阐述了乳化捕收剂的分散度、表面改性作用及浮选速度与煤泥浮选效率提高之间的关系,总结了现阶段乳化捕收剂的研究类型及应用情况.提出针对煤泥的性质,设计及制备不同特性的乳化捕收剂,将有利于推动工业规模上煤泥的高效回收.
Abstract
Compared with traditional reagents(hydrocarbon oil),the emulsified collector has high dispersion in water due to reduce the interfacial tension between oil and water.It can be quickly and selectively adsorbed on the coal surface for improving the hydrophobicity of the coal surface to enhance the flotation efficiency.The problems of poor collection performance,poor selectivity and high fuel consumption in coal flotation can be effectively solved.The structure and formation mechanism of emulsified collector(common emulsion and microemulsion)are introduced.The advantages and disadvantages of mechanical stirring,ultrasonic emulsifying and jet emulsifying methods for preparing emulsified collector are analyzed.The relationship between the dispersibility,surface modification,flotation rate of emulsified collector and the improvement of coal slime flotation efficiency is described.The current research types and applications of emulsified collectors are summarized.It is pointed out that the design and preparation of emulsified collectors with different characteristics according to the properties of coal slime will be beneficial to promote the efficient recovery of coal slime on industrial scale.
关键词
乳化捕收剂/乳化方法/形成机理/煤泥/浮选Key words
emulsification collector/emulsified method/formation mechanism/fine coal/flotation引用本文复制引用
基金项目
国家自然科学基金(52004283)
江苏省自然科学基金(BK20211048)
出版年
2024
国家科技期刊平台
NSTL
万方数据