DOI: 10.52150/2522-9117-2018-32-64-79

Nesterov Alexander Stanislavovich, PhD (Engin.), Senior Researcher, Head of Department; Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: asn.dnepr@ gmail.com; ORCID0000-0002-0183-0327

Garmash Larysa Ivanivna, с Research Scientist, Iron and Steel Institute named after Z.I. Nekrasovof the NAS of Ukraine, AcademicanStarodubova square, 1, Dnipro, Ukraine, 49107; e-mail:larysagar@gmail.com; ORCID 0000-0002-9540-3037

Lopatenko Konstantin Petrovich, PhD (Engin.), Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107

Boldenko Mikhail Grigorievich, Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine,49107

Gorbatenko Natalia Valerievna, PhD in Chemistry, Senior Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine,49107

Lutar E.I., Junior Senior Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107

The researches of high-temperature properties of iron materials in laboratory conditions

Summary. The aim of the study is to simulate in laboratory conditions the behavior of iron ore materials in the zone of softening-melting DP and drip flow using an integrated method developed at the Institute of Ferrous Metallurgy. It is shown that the widespread idea of the formation in the blast furnace of primary slag melt based on FeO takes place mainly in the initial period of slag formation and is true for low basicity iron ore materials. For pellets, the nature of the formation of liquid phases differs significantly from the agglomerate. Experimentally established changes in the composition of the slag melt as heating. It is shown that under the conditions of temperature and heat treatment of raw materials, each temperature has its own composition of the liquid phase. When the pellets are melted, the primary melt is formed in the temperature range of 1330–13600C, in which the proportion of primary slag is 16–25%. Melt from high-silicon lumpy ore is formed at high temperatures of 1490-15200С. The mass of the primary slag with 42-48% FeO is 4-8% by weight of iron ore materials. The main part of the melt hangs on the coke nozzle on the coke layer at temperatures above 16000C. Melts formed from mixtures of iron-containing materials, as a rule, have averaged characteristics. The observed patterns make it possible to predict the behavior and properties of multicomponent charge mixtures in a blast furnace.
Keywords: blast furnace, iron ore materials, modeling, temperature heat treatment, reduction, melts.

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