Interaction of fine, medium, and coarse particles in coal fines flotation

被引：7
|
作者：
Bu, Xiangning [1 ,2 ]
Xie, Guangyuan [1 ]
Peng, Yaoli [1 ]
机构：
[1] China Univ Min & Technol, Sch Chem Engn & Technol, 1 Daxue Rd, Xuzhou 221116, Peoples R China
[2] Univ Newcastle, Sch Engn, Discipline Chem Engn, Callaghan, NSW, Australia
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2017年 / 39卷 / 12期
关键词：
Coal; flotation kinetics; interaction degree; particle size; ternary-particle mixture; KINETIC-MODELS; RATE-CONSTANT; SIZE; RECOVERY; FLOCCULATION; MINERALS; ORDER;
D O I：
10.1080/15567036.2017.1323054
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：
This study is concerned with the interaction among fine, medium, and coarse particles in coal flotation. Flotation tests for fine, medium, and coarse particles and the artificial ternary-particle mixtures were executed in a lab flotation cell. Flotation results were evaluated by the modified flotation rate constant (Km) according to the classical first-order flotation model. A parameter called interaction degree was developed to estimate the interaction among fine, medium, and coarse particles. It was observed that the modified flotation rate constant of medium particles was significantly faster than fine and coarse particles. The interaction among of fine, medium, and coarse particles was stronger with a relatively higher proportion of medium particles compared with the proportions of fine and coarse particles. Meanwhile, the gap for flotation rate constant between fast (medium particles) and slow (coarse/fine) fractions narrowed in the ternary-particle mixture flotation.
引用
收藏
页码：1276 / 1282
页数：7
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