Determining the Wettability of Coal Surfaces


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Abstract

Abstract—For Kuznetsk Basin coal of different metamorphic stages, the fundamental difference between determining the limiting wetting angle of a coal surface by means of a hanging bubble and a sitting droplet is determined. The influence of surface preparation (briquetting of powder, plane cleavage, or surface polishing after plane cleavage) on the limiting wetting angle is investigated. The methodological features of sample preparation that affect the determination of coal wettability are identified.

About the authors

Yu. F. Patrakov

Institute of Coal, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: yupat@icc.kemsc.ru
Russian Federation, Kemerovo

S. A. Semenova

Institute of Coal, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: semlight@mail.ru
Russian Federation, Kemerovo

Yu. A. Kharlampenkova

Institute of Coal, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: kon.julija@gmail.com
Russian Federation, Kemerovo

S. A. Sozinov

Collective-Use Center, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: sozinov71@mail.ru
Russian Federation, Kemerovo

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