Flotation kinetics of the removal of unburned carbon from coal fly ash

被引：9
|
作者：
Yang, Lu [1 ]
Li, Danlong [1 ]
Zhang, Haijun [1 ,2 ]
Yan, Xiaokang [1 ,2 ]
机构：
[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Chinese Natl Engn Res Ctr Coal Preparat & Purific, Xuzhou, Jiangsu, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2018年 / 40卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Coal fly ash; contact angle; flotation; kinetics; unburned carbon; FROTH FLOTATION; FINE COAL;
D O I：
10.1080/15567036.2018.1486914
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：
Unburned carbon (UC) in coal fly ash indicates the waste of energy source and is an obstacle to the utilization of coal fly ash. The purpose of this study was to investigate the flotation kinetics of the removal of UC from coal fly ash. The collector and frother dosage are key factors for coal fly ash flotation. Six flotation kinetic models were applied to fit the flotation kinetic tests data. The fitted results showed that the classical first-order model had better consistency with the experimental data. The contact angle of flotation concentrates decreased as the flotation time was extended which revealed the decrease of flotation rate.
引用
收藏
页码：1781 / 1787
页数：7
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