THE INVESTIGATION OF FIRING OF SIDERITE SMALL FRACTIONS IN A ROTARY FURNACE
https://doi.org/10.17073/0368-0797-2015-9-652-657
Abstract
The Bakal Mining Administration was asked to burn iron ores in a rotary furnace in the presence of solid fuel additives for more in-depth use of them. The kinetics studies of their characteristics of heat treatment in air at a heating rate of 10 grad./min made possible to identify seven process steps: drying, preheating dissociation of the carbonates, iron oxidation, formation of sparingly soluble silicate melt, accompanied by a change in their state, and the heat sealing conditions. The studies of changes of linear dimensions siderite samples during the isospeed heating made possible to establish the strengthening conditions for their structures in selected stages of heat treatment. The results of industrial test of firing of siderite of class (10 – 0) mm in a rotary furnace, heated with natural gas in the presence of additives coke are presented. The possibility of achieving the output burnt fraction to 62.07 % is described for the thermal efficiency of the unit – 77,27 %.
About the Authors
V. I. Matyukhin
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Thermal Physics and Informatics in Metallurgy”,
19, Mira str., Ekaterinburg 620002
S. G. Melamud
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Сand. Sci. (Eng.), Deputy Director of the Institute of Materials Science and Metallurgy,
19, Mira str., Ekaterinburg 620002
V. V. Shatsillo
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Postgraduate of the Chair “Metallurgy of iron and alloys”,
19, Mira str., Ekaterinburg 620002
O. V. Matyukhin
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Thermal Physics and Informatics in Metallurgy”,
19, Mira str., Ekaterinburg 620002
A. V. Matyukhina
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Standardization and Certification”,
19, Mira str., Ekaterinburg 620002
References
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Review
For citations:
Matyukhin V.I., Melamud S.G., Shatsillo V.V., Matyukhin O.V., Matyukhina A.V. THE INVESTIGATION OF FIRING OF SIDERITE SMALL FRACTIONS IN A ROTARY FURNACE. Izvestiya. Ferrous Metallurgy. 2015;58(9):652-657. (In Russ.) https://doi.org/10.17073/0368-0797-2015-9-652-657
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