Source: http://www.rudmet.ru/journal/1590/article/27314/?language=en
Timestamp: 2019-04-25 17:07:58+00:00

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ArticleAuthor Pancnehko S. V., Dli M. I., Borisov V. V., Panchenko D. S.
Considered are thermalphysic processes in an ore-smelting electrothermal reactor, which is a reaction bulk with different phase composition, where transfer of energy is carried out in separate zones at temperatures above 2000 К. In the paper, a two-dimensional model of the near-electrode crucible reaction zone is presented as well as analytical solutions for describing thermalphysic processes in a reaction zone which characterize conditions of the target product manufacturing are obtained. Experimental study of electrothermal reactor operating modes has been hampered by the absence of reliable sensors and reactionary character of the medium, that’s why elaboration of the adequate mathematical models which can be realized using numerical methods is a currently central problem. However, in some cases operating figures of technological reactors may be estimated through analytical investigations owing to the use of the valid approximations. Analytical approach allows one to discover the main regularities of the influence of different factors on the process under consideration, to estimate the influence degree, to obtain a qualitative picture of an object behavior, to draw a conclusion about capability of control and extent of an effect on the control system. Calculations has been fulfilled for a technological process of phosphorus obtaining, but similarity of manufacturing processes for calcium carbide, titanium carbide, fused corundum as well as for nickel in a certain sense, gives ground to suggest that the conclusions presented in this paper are suitable for electrothermal process of a broad spectrum. There are obtained distributions of the Joule heat emission flux density, distribution of temperatures in the region of chemical and physical transformations. It is determined that target processes are localized in a near-electrode zone with the formation of crucibles unrelated. However, energy transfer processes enlarge an effective area of reactions and should be taken into account during designing and mode control. Neglecting heat efficiency may introduce large errors in analysis of the modes.
This work is done in the framework of the basic part of State task of the Ministry of Education and Science of the Russian Federation No. 2014/123 to perform public works in the field of scientific activities, project No. 2493.
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