Original scientific paper

Reduction of costs of iron production by changing parameters of the mixed blast-furnace wind

J. Terpák ; BERG - Faculty, Technical University of Košice, Košice, Slovakia
L'. Dorčák ; BERG - Faculty, Technical University of Košice, Košice, Slovakia
I. Koštial ; BERG - Faculty, Technical University of Košice, Košice, Slovakia
L. Pivka ; BERG - Faculty, Technical University of Košice, Košice, Slovakia

Abstract

The blast-furnace wind from hot-blast stoves is a significant factor of the blast furnace functioning. The technology was analyzed in which the hot wind from hot-blast stoves is not mixed with the cool wind to a constant wind temperature, but is blown directly into the blast furnace. However, it is necessary to compensate for the changes of the theoretical temperature of burning in blast furnace as a consequence of non-stabilized wind temperature, by changing composition of the wind. This can be done by adding different media into the wind with different results from the operational and economical viewpoints. Essentially, the following types of media are used in blast furnaces: steam, oxygen, substitution fuels, nitrogen, and waste gas.

Keywords

blast-furnace wind; mathematical model; simulation

Hrčak ID:

43645

URI

https://hrcak.srce.hr/43645

Publication date:

1.4.2010.

Article data in other languages: croatian

Visits: 2.432 *