Dependence of surface wettability and filtration capacity of coals on the degree of metamorphism

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Abstract

For many technological processes of coal mining, sorting, processing and transportation, the property of the coal surface to be wetted with various liquids is important. The method of determining the marginal wetting angle of the coal surface and filtration of the liquid through a layer of coal powder was used as a wettability characteristic in this work. The influence of changes in the chemical composition and porosity of coals in the range of their metamorphism on the characteristics of wettability is estimated. It is shown that the wettability and filtration properties of coals have an extreme dependence with a minimum at the middle stage of metamorphism.

About the authors

Yu. F. Patrakov

The Federal Research Center of Coal and Coal-Chemistry of SB RAS

Email: semlight@mail.ru
650065 Kemerovo, Russia

S. A. Semenova

The Federal Research Center of Coal and Coal-Chemistry of SB RAS

Email: yupat52@gmail.com
650065 Kemerovo, Russia

T. A. Papina

The Federal Research Center of Coal and Coal-Chemistry of SB RAS

Email: tania_garant@mail.ru
650065 Kemerovo, Russia

A. V. Yarkova

The Federal Research Center of Coal and Coal-Chemistry of SB RAS

Email: nas.yarkova1998@yandex.ru
650065 Kemerovo, Russia

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