Analysis of selected method of beneficiating coal slurries deposited in impoundments
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Silesian University of Technology
Marcin Lutynski   

Silesian University of Technology, Faculty of Mining and Geology, Department of Mineral Processing and Waste Utilization, Gliwice, Poland
Publication date: 2012-06-01
Physicochem. Probl. Miner. Process. 2012;48(2):579–589
The paper presents research results of the possibility to beneficiate coal slurries deposited in 21 impoundments located in the region of Silesia, Poland. Coal slurries of particle size diameter below 1 (0.5) mm were subjected to beneficiation tests with the use of the following methods: centrifugal separator, hydrocyclone, Reichert spiral separator and flotation. Applied methods showed significant differences in obtained results. The most effective method was flotation where yield was on average 64% with concentrate of high calorific value. In case of centrifugal separator and Reichert type spiral average yield was 22% and 25%, respectively. In case of hydrocyclone classifier-separator, a high yield of low quality concentrate was obtained. The study revealed that such impoundments have a high energetic potential which can be effectively used by applying a proper beneficiation technology.