Research into the process of preparation of Ukrainian coal by the oil aggregation method
DOI:
https://doi.org/10.15587/1729-4061.2017.104123Keywords:
oil aggregation, coal preparation, ash content of coal, aggregation, self-leveling of oil aggregationAbstract
We conducted a study into concentration of Donetsk coal with varying degrees of coalification – anthracite and grade G – by the method of oil aggregation. We determined the character of impact of the following factors on the results of oil aggregation of coal: the ash content of original coal, pulp agitation duration, pulp density, consumption and type of reagent-binder.
The research demonstrated a possibility of effective preparation of finely- and thinly dispersed Donetsk coal the size of 0–0.1; 0–1(2) mm and ash content from 10–15 % to 65–70 % by the method of oil aggregation.
In this case, it was established that with an increase in the ash content of original coal, the process of oil aggregation displays a capacity of self-leveling. By reducing the speed of aggregation, it is possible to attain practically stable technological results over the entire examined range of ash content of original coal – from 10–15 % to 65–70 %.
Obtained results substantiate the possibility of employing the process of oil aggregation for the re-preparation of waste, in particular, waste of flotation and gravitation separation of coal preparationReferences
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Copyright (c) 2017 Volodymyr Biletsky, Petro Molchanov, Mykola Sokur, Gennady Gayko, Vasyl Savyk, Vitaliy Orlovskyy, Mihailo Liakh, Teodoziia Yatsyshyn, Roman Fursa
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