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Cooling system for high-power drives in belt conveyors

Nieśpiałowski Krzysztof, Chelyadyn Liubomyr, Romanyshyn Taras

Mining Machines

2022

vol. 40, iss. 1

54--63

In mining plants (underground and on the surface), high-power machines are used. Electric motors and the gears driven by them have a specific cooling system as a flow system with an internal heat exchanger. The role of the heat exchanger is to collect the thermal energy generated during the unit operation. The refrigerant with the received thermal energy must be led away from the motor and gear unit, where it will be cooled. In the drives used in underground hard coal mines, water is the cooling medium, supplied through a firefighting pipeline. The water used for cooling is often discharged directly to the floor or to sewers, and further it is transported to the surface. The article presents a solution that uses tanks for cooling liquid with highly efficient air-water coolers in surface and underground applications.

Sludge of Oil Refining Units and Their Processing

Chelyadyn Volodymyr, Bogoslavets Mykola, Chelyadyn Liubomyr, Poznyak Oksana, Novosad Petro

Journal of Ecological Engineering

2020

Vol. 21, nr 7

169--177

The article presents the quantitative characteristics of multi-tonnage technogenic wastes in Ukraine and the IvanoFrankivsk region, which cause environmental pollution. The water silts containing petroleum products are particularly dangerous wastes. It is proposed to recycle them using the method of preparation of the raw mixture in composition with the following technogenic wastes: oil sludge, ash, zeolite material, calcium-containing compounds, and organic mineral binders. They are granulated and subjected to the thermal treatment at low temperatures. The granular materials made using the oil-containing silt of the model object reduce the negative impact onto the environment of the region and increase its level of environmental safety.