Three-phase universal electromagnetic process reactor for the processing of mineral substances
DOI:
https://doi.org/10.18321/cpc284Keywords:
basalt, monochromatic slime, bituminous coal, electromagnetic reactor, melting, specific energy consumption.Abstract
This paper presents the advantages of the application electromagnetic technological reactor for mineral substance melting. Thermodynamic calculations of the process of heating and melting mineral substances in a wide temperature range (300–2000 K) were performed. For the processing in an electromagnetic reactor, the following materials were used: basalt rock from Aktobe field to obtain a mineral fiber from melt ( heat-insulating material ), chrome production waste - monochromatic sludge to convert toxic hexavalent chromium to trivalent and dust after gas cleaning at chromium production to reduce carbon chromium oxides, contained in Shubarkol bituminous coal. Calculations have shown that in the studied temperature range, toxic hexavalent chromium is completely transferred into safe trivalent chromium with a concentration of about 6 wt.%. The gas phase does not contain harmful components and is represented mainly by water steam, carbon dioxide, nitrogen, and hydrogen. For various technological mixtures, specific energy consumption for the heating and melting process changes from 0.6 up to 0.9 kWh/kg. In experiments, the average specific energy consumption for obtaining a melt of studied mineral substances in EMR was 1 kWh/kg. Results of thermodynamic calculations and experiments confirm the possibility of the application TERRA software for the calculation of mineral substances heating and melting process in EMR and for determining initial data for its design. Fulfilled studies have shown the high efficiency of mineral substances melting in EMR. Relatively low specific energy consumption for melting and melt jet production favorably distinguish technology EMR from the known melting technologies of mineral materials, including technological mixtures containing basalt, chrome production wastes, and solid fuels.
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