Novotroitsk branch of the National University of Science and Technology MISIS, Novotroitsk, Russia
E. V. Zhenin, Cand. Eng., Associate Prof., Dept. of Metallurgical Technologies and Equipment, e-mail: zhenin.ev@misis.ru
A. N. Shapovalov, Cand. Eng., Associate Prof., Dept. of Metallurgical Technologies and Equipment, e-mail: alshapo@misis.ru

The results of investigation of the influence of water temperature (in the range from 20 to 80 °С) during pelletizing on pelletizing results, sintering parameters and sinter strength are presented. It was found that the increase in water temperature improves the quality of charge pelletizing, mainly in terms of granule strength. This is due to the change in the physical properties of water as it is heated - a decrease in surface tension and viscosity. It is shown that water heating during pelletizing for every 10 °С provides heating of sinter charge by 1.3-1.4 °С. It was found that sintering process parameters and sinter quality improve as the temperature of water (in the studied range) used in pelletizing increases. This is due to the improved quality of sinter charge preparation for sintering, which increases of the sintered bed porosity and temperature and time conditions of sintering.

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