Original Paper

UDC 552.574 O.L.Alekseeva, 2023

ISSN 0041-5790 (Print) ISSN 2412-8333 (Online) Ugol  Russian Coal Journal, 2023, S12, pp. 107-110 DOI:




Alekseeva O.L. 1,2

1 Institute of the Earths Crust of SB RAS, Irkutsk, 664033, Russian Federation

2 LLC Research and Production Company Spirit, Irkutsk, 664033, Russian Federation

Authors information

Alekseeva O.L., Leading Engineer of the Department for Integrated Use of Mineral Raw Materials, Director of Economics and Finance


The presented article deals with the influence of one of the operating parameters of a screw separator during the enrichment of coal sludge. The author shows with her results how the process of enrichment of finely dispersed coal slurry proceeds along the cross-section of the working part of the apparatus, depending on its productivity with the same feed density and the cross-sectional width of the apparatus trough.


Coal sludge, Enrichment of coal sludge, Operating parameters, Granulometric analysis, Screw separation.


1. Shadrunova I.V., Zelinskaya E.V., Volkova N.A. et al. Mining wastes: resource potential and processing technologies (using Siberia and the Urals as an example). Current challenges in complex processing of hard-to-process ores and man-made raw materials. Proceedings of the Plaksin Readings International Scientific Conference. Krasnoyarsk, 2017, pp. 15-21. (In Russ.).

2. Kozlov V.A. & Novak V.I. Optimization of coal preparation plant operation to maximize concentrate yield. Gornyj informatsionno-analiticheskij byulleten', 2019, pp. 175-186. (In Russ.).

3. Behera B. & Sahu H.B. Coal mine waste characterization and defluoridation property. Heliyon, 2023, 9.

4. Kopobayeva A.N., Portnov S. & Kim S.P. Tectonic factors of impurity elements accumulation at the Shubarkol coal deposit (Kazakhstan), January, 2020. DOI: 10.33271/nvngu/2021-5/011.

5. Thang N.C., Tuan N.V. & Hiep D.N. The Potential Use of Waste Rock from Coal Mining for the Application as Recycled Aggregate in Concrete, October, 2020. DOI:

6. Novak V.I. & Kozlov V.A. An overview of modern methods of coal sludge preparation. Gornyj informatsionno-analiticheskij byulleten', 2012. (In Russ.).

7. Belousov V.A. Promising methods of coal sludge processing. Mezhdunarodnyj zhurnal prikladnyh i fundamental'nykh issledovanij, 2014, (4), pp. 15-17. (In Russ.).

8. Sokur A.K. An overview of gravity methods for concentration of coal sludges of non-flotation size. Obogashchenie poleznykh iskopaemykh, 2012, Issue 51. (In Russ.).

9. Prokopyev S.A. Overview of coal sludge gravity concentration technologies. Nauki o Zemle i nedropol'zovanie, 2022, Vol. 45, (4), pp. 458-468. (In Russ.).

10. Prokopyev E.S. & Alekseyeva O.L. Feasibility study of processing coalbearing wastes of the sludge storage at the West Siberian Metallurgical Works. Nauki o Zemle i nedropol'zovanie, 2022, Vol. 45, (4), pp. 446-457. (In Russ.).

11, Soloveyenko N.P. & Bolotin N.M. Application of screw separation technology in coal sludge processing. Nauki o Zemle i nedropol'zovanie, 2022, Vol. 5, (4), pp. 69-480. (In Russ.).

12. Turetskaya N.Yu. & Chikisheva T.A. Processing of sludge from coal sludge ponds using the screw separation technique. Nauki o Zemle i nedropol'zovanie, 2022, Vol. 45, (4), pp. 36-445. (In Russ.).


The research was performed as part of the Integrated Scientific and Tech? nical Programme of the Ministry of Science and Higher Education of the Russian Federation 075-15-2022-1192 Processing of coal mill tailings in order to obtain commercial coal concentrate with support of the De? velopment and implementation of complex technologies in the areas of exploration and extraction of minerals, industrial safety, bioremediation, creation of new deep conversion products from coal raw materials while consistently reducing the environmental impact and risks to human life Integrated Scientific and Technical Programme of the Full Innovation Cycle, approved by Order No 1144- of the Government of the Russian Federa? tion on May 11, 2022.

For citation

Alekseeva O.L. Influence of productivity of screw separator when enriching coal sludges. Ugol, 2023, (S12), pp. 107-110. (In Russ.). DOI: 10.18796/0041- 5790-2023-S12-107-110.

Paper info

Received November 1, 2023

Reviewed November 15, 2023

Accepted November 30, 2023