Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg, Russia:

V. I. Matyukhin, Senior Researcher, Assistant Professor of a Chair of Thermal Physics and Informatics in Metallurgy, e-mail: matyhin53@mail.ru
Yu. G. Yaroshenko, Professor of a Chair of Thermal Physics and Informatics in Metallurgy, e-mail: yury-y@planet-a.ru
O. V. Matyukhin, Assistant Professor of a Chair of Thermal Physics and Informatics in Metallurgy, e-mail: matyhin53@mail.ru

LLC “Mednogorsk copper-sulfur combine”, Mednogorsk, Russia:
K. V. Bulatov, Chief Executive Officer

Nowadays, air supply reconstruction is the most energy-efficient and low-cost way of improvement of technical and economic indicators of shaft furnaces, where copper matte is melted. Using the results of mathematical and physical modeling, there were substantiated the conditions of shaft furnace reconstruction for gas distribution improvement in working area during the change of the design of ring air mainfolds and tuyeres. The comparative analysis of the data of material and thermal balances of furnace before and after reconstruction showed the increase of the total charging feed productivity by 23.11%. The specific charge consumption is decreased, and gas outlet is reduced due to more efficient use of blowing, while dust entrainment is considerably reduced. Experiments defined the connection of these changes with increasing the intensity of heat and mass exchange processes by the whole horizontal section of layer during the improvement of air blowing distribution evenness. Technical solution, connected with quality improvement of raw material preparation due to increase of a part of coarse fraction in charge, can become the next stage of improvement of technical-economic and ecological indicators of shaft melting furnace work.

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