E3S Web Conf.
Volume 109, 2019International Conference Essays of Mining Science and Practice
|Number of page(s)||8|
|Published online||09 July 2019|
Determination of dependencies of dehydration of thermal power plants’ ash and slag waste from equipment parameters
Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, 49005, Dnipro, Simferopolska Str., 2a, Ukraine
* Corresponding author: firstname.lastname@example.org
Complex processing of ash and slag from coal-fired thermal power plants attracts a lot of attention. Waste processing will reduce the load on existing storage facilities, to return unburned coal to the boilers of power plants, to obtain a valuable raw material resource for construction, ferrous and non-ferrous metallurgy. At all thermal power plants of Ukraine utilization and storage of ash and slag is carried out by hydraulic method. Therefore, for all processing technologies relevant the dehydration of fine-disperse raw material. The article presents the results of laboratory tests of a new device for dehydration of ash and slag waste. It uses a set of influences on raw material: the overlay of vibration oscillations, the electric field and vacuumizing. By the method of pair linear correlations it is obtained that the dependence of moisture on each of the variable parameters has a weak nonlinear character. The exact and approximate multiple regression equations for the practical assessment of moisture under the combined action of all variable factors are obtained. With the size of the raw material + 0.63 – 0.05 mm, it allows to reduce the moisture from 30 to 9 %.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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