Effects of calcium chloride and sodium chloride on the flotation removal of unburned carbon from coal fly ash

被引：9
|
作者：
Xu, Ming [1 ]
Li, Danlong [1 ]
Zeng, Kunkun [1 ]
Li, Guosheng [1 ]
Zhang, Haijun [2 ]
机构：
[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Peoples R China
[2] China Univ Min & Technol, Natl Engn Res Ctr Coal Proc & Purificat, Xuzhou, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2018年 / 40卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Calcium chloride; coal fly ash; flotation; sodium chloride; unburned carbon; COLUMN; FINE; SEPARATION; CONCRETE; PARTICLE; IONS; CELL;
D O I：
10.1080/15567036.2018.1463315
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The effects of calcium chloride and sodium chloride on the coal fly ash flotation were investigated by studying the surface properties of coal fly ash. X-ray photoelectron spectroscopy and scanning electron microscopy showed the presence of many lime particles in the coal fly ash, which, together with Ca(OH)(2)(s), could be adsorbed on the rough surface of unburned carbon particles. The flotation results indicated that calcium chloride reduced the performance of unburned carbon removal from the coal fly ash, whereas sodium chloride increased froth stability thereby improving the flotation performance.
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页码：847 / 853
页数：7
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