摘要
对电解质强化煤泥浮选效果的机理进行了综述。电解质的添加可以薄化矿物颗粒表面的水化膜,压缩气泡与颗粒表面的双电层,降低气泡与颗粒表面的静电斥力,有利于气泡的矿化。同时电解质有利于阻止气泡的兼并,降低气泡的尺寸,增加浮选体系中微小气泡的数量,提高浮选的动力学,并在一定浓度范围内增加浮选泡沫的稳定性。
The mechanism of electrolytes for enhancing coal flotation is reviewed. The addition of electrolytes destabilises the hydrated layers on the surface of mineral particles, compresses the electrical double-layer of bubbles and particles and reduces the electrostatic repulsion between bubbles and particles, which are favorable for the mineralization of bubbles. At the same time, electrolytes prevent the coalescence of bubbles and produce an abundance of fine bubbles, which contributes to improve flotation kinetics. Besides, electrolytes can increase the froth stability in a certain concentration range.
出处
《煤炭技术》
北大核心
2017年第11期325-327,共3页
Coal Technology
基金
教育部新世纪优秀人才支持计划(NCET-13-1020)
十二五国家科技支撑计划课题(2014BAB01B01)
关键词
水化膜
双电层
兼并
泡沫稳定性
hydrated layers
electrical double-layer
coalescence
froth stability
