Innovation avenues for coal dressing products

The article demonstrates more comprehensive usability of coal and its dressing products in the form of coal–water slurry fuel and briquettes produced from finely dispersed rejects of coal preparation plants and suitable for combustion at thermal power stations. Coal–water slurry fuel manufactured from the mentioned rejects possesses the required structural and rheological characteristics, and the lowest combustion heat to 13 MJ/kg. Ash after combustion of such fuel can be used as middlings applicable later on at a commercial scale. Experimental briquetting of the mixed filter cake from different preparation plants shows that producing the quality briquettes needs that the initial mixture has an optimal humidity around 20%. The thermal drying technology using smoke gases is developed for coal briquettes manufactured from fine-dispersion rejects of coal dressing. The accomplished research proves the necessity to amend legislation in the sphere of coal production and dressing. In particular, it is required to elaborate new design standards for coal dressing plants instead of temporal and obsolete standards VNTP 2-92 and as consistent with the present-day conditions.

Keywords: coal dressing rejects, filter cake, coal–water slurry fuel, briquetting.
For citation:

Murko V. I., Baranova M. P. Innovation avenues for coal dressing products. MIAB. Mining Inf. Anal. Bull. 2022;(6):131-141. [In Russ]. DOI: 10.25018/0236_1493_2022_6_0_131.

Acknowledgements:

The study was supported by the Russian Foundation for Basic Research, Project No. 20-43-420016/20.

Issue number: 6
Year: 2022
Page number: 131-141
ISBN: 0236-1493
UDK: 662.772
DOI: 10.25018/0236_1493_2022_6_0_131
Article receipt date: 24.01.2022
Date of review receipt: 08.02.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

V.I. Murko, Dr. Sci. (Eng.), Professor, e-mail: sib_eco@kuz.ru, Siberian Industrial University, 654007, Novokuznetsk, Russia, ORCID ID: 0000-0002-6932-1019,
M.P. Baranova, Dr. Sci. (Eng.), Assistant Professor, Head of Chair, e-mail: marina60@mail.ru, Krasnoyarsk State Agrarian University, 660049, Krasnoyarsk, Russia, ORCID ID: 0000-0002-2700-9721.

 

For contacts:

V.I. Murko, e-mail: sib_eco@kuz.ru.

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