<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In addition to rock waste post-mining waste dump sites also contain coal grains justifying treating the dump sites as secondary mineral deposits. The article presents the results of laboratory tests aimed at determining the possibility of using suspending bed technology to separate a combustible substance from post-mining waste of a 4-0 mm grain size. The test results showed the possibility of obtaining good quality coal concentrates from coal waste of a grain size of 4-1 mm. The need for desludging and densifying the feed for the classifier with an autogenic suspending bed in the case of coal waste beneficiation in a wide 4-0 mm grain size justifies the use of a two-chamber device or two separate classifiers for narrower grain size classes. Concepts of systems for the recovery of fine coal grains providing the use of the classifier with autogenous suspending bed for the density distribution of feeds with high ash content are presented. The concepts were developed for beneficiation of the material in a 4-0 mm grain class.</p>
</abstract>

In addition to rock waste post-mining waste dump sites also contain coal grains justifying treating the dump sites as secondary mineral deposits. The article presents the results of laboratory tests aimed at determining the possibility of using suspending bed technology to separate a combustible substance from post-mining waste of a 4-0 mm grain size. The test results showed the possibility of obtaining good quality coal concentrates from coal waste of a grain size of 4-1 mm. The need for desludging and densifying the feed for the classifier with an autogenic suspending bed in the case of coal waste beneficiation in a wide 4-0 mm grain size justifies the use of a two-chamber device or two separate classifiers for narrower grain size classes. Concepts of systems for the recovery of fine coal grains providing the use of the classifier with autogenous suspending bed for the density distribution of feeds with high ash content are presented. The concepts were developed for beneficiation of the material in a 4-0 mm grain class.

Recovery of Fine Coal Grains from Post-Mining Wastes with Use of Autogenous Suspending Bed Technology

Management Systems in Production Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

In addition to rock waste post-mining waste dump sites also contain coal grains justifying treating the dump sites as secondary mineral deposits. The article...

Recovery of Fine Coal Grains from Post-Mining Wastes with Use of Autogenous Suspending Bed Technology

Published Online: Aug 17, 2020

Page range: 220 - 227

Received: Mar 01, 2020

Accepted: Jul 01, 2020

DOI: https://doi.org/10.2478/mspe-2020-0032

Keywords
classification, fine grains, post-mining wastes dump sites, suspending bed

© 2020 Daniel Kowol et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Recovery of Fine Coal Grains from Post-Mining Wastes with Use of Autogenous Suspending Bed Technology

Published Online: Aug 17, 2020

Page range: 220 - 227

Received: Mar 01, 2020

Accepted: Jul 01, 2020

DOI: https://doi.org/10.2478/mspe-2020-0032

Keywordsclassification, fine grains, post-mining wastes dump sites, suspending bed

© 2020 Daniel Kowol et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
classification, fine grains, post-mining wastes dump sites, suspending bed