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Abstract
Theoperation of the MMKPJSCblastfurnaceequipped with a non-cone tray-typeloadingdevice was investigated whenthesurfaceequivalentsize of coke was changed. The increase in sizewascarriedoutbyincreasing the content of classes 60-80 and +80 mm. In the baseperiod, it was 50.4 mm, in the experimental period –52.3 mm with constant loading mode. The resultsshowedthat the increase in the size of coke was accompanied by a spontaneousredistribution of itrelative to the zones of the gratespace: axial, wall, oreridge. The consequencewas a change in the oreloadalong the horizontalsection, as indicated by the temperature of the gasin the upperpart of the furnace. An increase in thesurfaceequivalentsize of cokefrom 50.4 to 52.3 mm was accompanied by a decrease in its specific consumption by 0.71% (3 kg/ton of pig iron)and a decrease in furnaceproductivityby1.29%.Toincrease the positiveeffect of cokesizeon the course of blastfurnacemelting, it is advisable to developrationalmodes of loadingchargematerialsalong the annularzones of the grate withadjustment of blastparameters.
Keywords:
blast furnace melting, cast iron, cokeconsumption, furnaceperformance, surface quivalent cokesize, loading mode, blast parameters
Kharchenko Alexander S. – ScD, head of the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Yudina Svetlana V. – postgraduate student of the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Sibagatullin Salavat K. – ScD, professor of the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Svechnikova Natalya Yu.– Candidate of Technical Sciences, Associate Professorof the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Yudin Danil V. – postgraduate student of the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Kurguzov Konstantin V. – postgraduate student of the metallurgy and chemical technologies department of Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Pavlov Alexander V. – Candidate of Technical Sciences, Head of the Blast Furnace Shop, Magnitogorsk Iron and Steel Works, Magnitogorsk, Russia.
