Study of the influence of increased productivity on the efficiency of separation and dewatering of polydispersed coal enrichment sludges in a modular installation with filtration and sedimentation centrifuges
DOI:
https://doi.org/10.4108/dtip.11959Keywords:
polydisperse sludges, coal enrichment, filtration centrifuge, sedimentation centrifuge, separation, dewatering, modular installationAbstract
Coal enrichment processes are accompanied by the formation of a significant amount of polydisperse sludges, the effective separation and dewatering of which is an important technological and environmental problem. The aim of this work was to study the influence of increasing the module productivity (increasing the solid phase flow rate by three times – up to 5.523 t/h on a dry basis) on the efficiency of separation and dewatering of polydisperse anthracite sludges of class 0–3 mm in the FGU-600 + OGS-469 modular installation. It was established that at increased load, the filtration centrifuge ensures the extraction of granular fraction with a moisture content of 8.8 % and ash content of 16 %, while the sedimentation centrifuge provides dewatering of fine fractions to a moisture content of 21.35–24 % at a solid phase concentration in the effluent of 2.5 g/L. Comparative analysis with previous results showed the preservation of high efficiency of the technological scheme, a slight improvement in the moisture content of the granular product and an acceptable increase in the loss of fine fractions. The obtained data confirm the possibility of scaling the proposed technology to industrial conditions.
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Copyright (c) 2026 A. Shkop, A. Ponomarova, O. Shestopalov, A. Bosiuk, V. Babenko
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