About determining the wettability of coal surface

20th International Scientific Symposium of Students, Postgraduates and Young Scientists on "Problems of Geology and Subsurface Development"

Arkhipov, V.A.^1 ; Basalaev, S.A.^1 ; Zolotorev, N.N.^1 ; Usanina, A.S.^2

Department of Gas Dynamics and Burning of Combustion, Scientific Research Institute of Applied Mathematics and Mechanics, Tomsk State University, Russia^1

Laboratory of Scientific Basis of Technology of Coal Benefication, Federal Research Center for Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Russia^2

关键词: Coal surfaces;    Gravitational sedimentation;    Laser emission;    Powder particles;    Powder sedimentations;    Spectral transmittance;    Transparent cells;    Water droplets;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/43/1/012076/pdf
DOI  :  10.1088/1755-1315/43/1/012076

来源: IOP

【 摘 要 】

A new method of measuring the wettability of coal powders based on determining the mass fraction of wetted powder particles at their interaction with water droplets during the process of gravitational sedimentation in a transparent cell has been proposed. Wettability parameter is calculated from the results of measuring the dependence of spectral transmittance of laser emission in the cell on time of powder sedimentation.