Authors: L.A. Suslina, E.N. Agapova, A.A. Bobrovnikova

Title of the article: Improvement of preparation efficiency of 0.15 1 mm coal using hydrosizers

Year: 2022, Issue: 4, Pages: 73-81

Branch of knowledge: 2.8.8 Mining machines, geotechnology (engineering)

Index UDK: 622.75

DOI: 10.26730/2618-7434-2022-4-73-81

Abstract: The low efficiency of preparation of coals of the 0.15-1 mm size class at processing plants leads to the necessity of optimization of the preparation process of this size class. In Kuzbass, practically all processing plants use spiral separators, which are simple in design, cheap, but ineffective devices. As a result, processing plants have losses of coals of these classes in the form of low-ash waste. In Kuzbass, repeated attempts have been made to use hydrosizers for preparation, but without success. Nevertheless, there are examples of processing plants, for example, central processing plant «Pechorskaya», which perfectly cope with preparation of coals of this size class with hydrosizers. It would be possible to organize coal preparation of coals of 0.15-1 mm size classes at coal preparation plants of Kuzbass, if experts would follow certain rules, which are necessary when using hydrosizers. This article presents the results of a comparison of the process of coal preparation using hydrosizers and a spiral separator, carried out at the «Pechorskaya» CPP, and shows that the use of hydrosizers significantly reduces combustible mass losses in comparison with the use of spiral separators for preparation of this size class.

Key words: preparation coal hydrosizer spiral separator coal dressability

Receiving date: 14.11.2022

Approval date: 15.12.2022

Publication date: 27.12.2022

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