Technological parameters determining the sintering process intensity
https://doi.org/10.17073/0368-0797-2021-3-184-191
Abstract
The sintering intensity is an important factor determining techno-economic efficiency of sinter production which provides the blast-furnace process with the main type of agglomerated iron ore raw materials. The charge sintering rate depends on technological parameters of the sintering process. Therefore, a systematic study of sintering technological parameters, which determine its intensity, is of practical and scientific interest. Indicators of the sintering process intensity are considered that assess it from both the mechanical and heat engineering positions. It is shown that in its purest form the sintering process intensity is characterized by the vertical agglomeration rate and combustion intensity of the sintering charge carbon. Two other indexes − the specific productivity for suitable sinter and intensity of heat output in the combustion zone – are less representative for the comparative estimation of sintering intensity, since their values depend on sintered mass strength and thermal effect of carbon combustion respectively. These factors go beyond the essence of the sintering intensity concept. Since content of fines of 5 – 0 mm at different sinter plants is not equal, representative performance comparison of sintering process is possible only taking into account the total amount of fines generated throughout the agglomerate transport path from sinter machine to blast furnace or the results of testing the agglomerate strength in a drum. A comprehensive systematic classification of techniques has been developed to intensify the sintering process based on the material-component principle using four levels of separation – objects, directions, paths and methods in which each subsequent level concretizes and develops the previous one. Its value is universality, which makes it possible to apply a systematization and separation system for almost all already known and future methods of sintering process intensification.
Keywords
About the Authors
S. G. Savel’ev
Kryvyi Rih National University
Ukraine
Ukraine
Sergei G. Savel’ev, Dr. Sci. (Eng.), Prof. of the Chair of Ferrous Metals and Foundry
11 Vitalii Matusevich Str., Kryvyi Rih, Dnipropetrovsk Region 50027
M. N. Kondratenko
Kryvyi Rih National University
Russian Federation
Russian Federation
Marina N. Kondratenko, Senior Lecturer of the Chair of Ferrous Metals and Foundry
11 Vitalii Matusevich Str., Kryvyi Rih, Dnipropetrovsk Region 50027
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Review
For citations:
Savel’ev S.G., Kondratenko M.N. Technological parameters determining the sintering process intensity. Izvestiya. Ferrous Metallurgy. 2021;64(3):184-191. (In Russ.) https://doi.org/10.17073/0368-0797-2021-3-184-191
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