Open AccessHard coal flotation depending on the degree of oxidation of the particle surface
Author(s) -
Jan Koláček,
Jaroslav Závada
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/444/1/012027
Subject(s) - coal , oleic acid , pulmonary surfactant , degree (music) , chemistry , particle size , froth flotation , particle (ecology) , chemical engineering , mineralogy , organic chemistry , geology , engineering , biochemistry , physics , oceanography , acoustics
The paper deals with the problem of floatability of coal with different degree of surface oxidation. It was found that coal floatability decreases with increasing degree of oxidation of its surface. In order to improve the flotation of the oxidized coal sample, mineral motor oil was used as a non-polar collector and oleic acid as a surfactant. Flotation tests showed a significant increase in the floatability of the oxidized coal sample after the addition of oleic acid and the close relationship between the degree of oxidation of the coal surface and the proportion of oleic acid as a collector.