Contribution of particle shape and surface roughness on the flotation behavior of low-ash coking coal. Issue 5 (4th March 2019)

• Record Type: Journal Article
• Authors: Yin, Wanzhong; Zhu, Zhanglei; Yang, Bin; Fu, Yafeng; Yao, Jin
• Is Part Of: Energy sources. Volume 41:Issue 5(2019)
• Page Start: 636
• Page End: 644
• Publication Date: 2019-03-04
• Subjects: Flotation kinetics constant -- influence -- particle shape -- quantitative contributions -- surface roughness; Natural resources -- Periodicals; Energy consumption -- Periodicals; Energy consumption -- Climatic factors -- Periodicals; Energy conversion -- Periodicals; Energy conversion -- Environment aspects -- Periodicals; Power (Mechanics) -- Periodicals; 333.7905
• DOI: 10.1080/15567036.2018.1520346
• Languages: English
• ISSNs: 1556-7036

Abstract

ABSTRACT: In this study, the influence of particle shape and surface roughness on the flotation behavior of +0.25–0.5 mm low-ash coking coal particles was investigated. The low-ash coking coal particles with different particle shape and surface roughness obtained through grinding or crushing were measured, calculated, and analyzed using an optical microscope associated with Image J software. The flotation kinetics tests were conducted in a 0.75 L XFD flotation cell with the presence of frother and in the absence of collector in order to investigate the natural floatability of the low-ash coking coal particles. The flotation kinetics constant of low-ash coking coal particles was calculated through the first-order rate equation. The experimental results illustrated that the flotation kinetics constant increased with increasing the aspect ratio and roughness, while the particle owning high roundness and circularity value led to smaller flotation kinetics constant. Finally, the quantitative contributions of particle shape and roughness of low-ash coking coal particles on flotation performance were established.