Magnitogorsk Iron and Steel Works, Magnitogorsk, Russia

A. V. Pavlov, Cand. Eng., Head of Blast Furnace Shop

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia
A. S. Kharchenko, Dr. Eng., Associate Prof., Head of the Dept. of Metallurgy and Chemical Engineering, e-mail: as.mgtu@mail.ru
S. V. Yudina, Postgraduate Student, Dept. of Metallurgy and Chemical Engineering
S. K. Sibagatullin, Dr. Eng., Prof., Dept. of Metallurgy and Chemical Engineering, e-mail: 10tks@mail.ru

South Ural State University, Chelyabinsk, Russia.
V. K. Dubrovin, Dr. Eng., Prof., Dept. of Pyrometallurgical and Foundry Technologies

This paper examines the operation of a blast furnace using dry-quenched coke instead of wet-quenched coke in modern coke oven battery No. 12 at Magnitogorsk Iron and Steel Works. Improved coke performance in terms of M25 and CSR (4.1 % and 9.6 % higher, respectively) and M10 (2.7 % lower, abs.) contributed to a 4.4-ton reduction in the slag remaining in the hearth after tapping and a 1.3 % reduction in the furnace bottom’s gas flow resistance coefficient. Specific coke consumption decreased by 2.4 %, while productivity increased by 1.2%. A further reduction in specific coke consumption by 2.8 %, while furnace productivity increased by 0.5 %, was achieved through adjustments to the charging mode when using coke from Battery No. 12 in the charge. This adjustment increased the ore load at the periphery and reduced it in the furnace’s intermediate and ore V-shaped counter zone.

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