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Development of metallurgy in Russia and CIS
ArticleName Study of thermal conductivity of oxide-carbon briquette in the conditions of one-side heating
ArticleAuthor I. L. Gonik, N. A. Zyuban, N. A. Novitskiy

Chair “Materials Technology”, Volgograd State Technical University (Volgograd, Russia):

Gonik I. K., Cand. Eng., Ass. Prof., e-mail:
Zyuban N. A., Dr. Eng., Prof., Head of the Chair
Novitskiy N. A., Postgraduate Student


The present work describes the study of the physical properties of briquetted charge material — oxide coal briquette. The main purpose of research is to find the submitted values of thermal conductivity at various temperatures of briquette heating. The technique and the results of the experimental work are shown. Initially briquettes have been heated up to 950 °С. Analysis of the built temperature relationships has revealed that heating rate of the briquettes included in the 1st series increased and, reaching 600 °С level, briquette temperature both on its surface and in axial area exceeds the furnace temperature. In the meantime briquettes of the 2nd series are heated only up to the furnace temperature. It is concluded that thermal conductivity ratio of the researched samples of briquetted charge materials increases with temperature rise. The results of experiments have displayed that thermal conductivity ratio of oxide-carbon briquettes that have been subjected to only drying at 200 °С is lower than thermal conductivity ratio of rolling scale (the main briquette component), due to porous structure of briquettes. Additionally, thermal conductivity ratio of briquettes that have been subjected to reducing calcination at 800 °С corresponds to the values of thermal conductivity ratio of metallized pellets, owing to variation of the structure during calcination and pre sence of metal phase in their composition.

keywords Scale, metallurgical waste, briquette, charge material, carbon, iron, thermal conductivity, heating, drying, calcination, metallized pellets

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