Authors: V.A. Kalashnikov, A.V. Gorbachev

Title of the article: Development of a low-cost technology for coal slurry dewatering from concentration plants with the use of shell filter constructions

Year: 2019, Issue: 3, Pages: 36-59

Branch of knowledge: 25.00.20 Geomechanics, rock destruction by explosion, mine aerogasdynamics and mining thermal physics

Index UDK: 622.794

DOI: 10.26730/2618-7434-2019-3-36-59

Abstract: The coal preparation process produces a significant amount of coal slime at the concentrators, which is, depending on the solids content, a liquid or semi-liquid mass. On the one hand, these are waste coal production wastes to be disposed of. However, non-refundable sludge disposal requires significant land resources for its disposal. On the other hand, sludge from coal preparation plants is a raw material for further processing and possible profit due to the content of coal up to 40% and more. Such a state of affairs inevitably poses the task of developing a low-cost technology for dewatering coal sludge for its subsequent use (low-cost recycling technology). Taking into account the fact that Kuzbass already has more than 50 coal concentrating plants and plants-in-operation, the volume of potential raw materials for processing is significant. In the previous article of the authors, some results of experiments on coal slurry dewatering by means of filtration through shell filtering constructions (SFC) made of different geotextile and geotextile-like materials were presented. These results allow to assume expediency of the further scientific study of this question. In the present article, the first variant of the developed low-cost technology with its detailed description for the conditions of the concentrating plant of Komsomolets mine of JSC SUEK-Kuzbass is presented. In addition, the plan of experiments with detailed indication of a place of performance of all works is presented. Single- and multilevel variants of placement of SFC both on the prepared sites and with the use of pallets are considered. Actual and predicted values of moisture content of coal slurry during filtration through the SFC, made of different materials, are presented.

Key words: coal slurry concentrating plant shell filtering construction low-cost technology of dewatering geotextile geosynthetics

Receiving date: 14.09.2019

Approval date: 01.01.1970

Publication date: 30.12.2019

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