Report on laboratory research of power-efficient triple-nozzle tuyere oxygen lancing

Author(s): Yushkevich P. O., Molchanov L. S.

Affilation(s): Z. I. Nekrasov Institute of Ferrous Metallurgy, 1 Acad. Starodubova Sq., 49050, Dnipro, Ukraine

*Corresponding Author’s Address: [email protected]

Issue: Volume 4; Issue 1 (2017)

Dates:
Paper received: April 22, 2017
The final version of the paper received: May 17, 2017
Paper accepted online: May 21, 2017

Citation:
Yushkevich P. O., Molchanov L. S. (2017). Report on laboratory research of power-efficient triple-nozzle tuyere oxygen lancing. Journal of Engineering Sciences, Vol. 4(1), pp. E1-E7, doi: 10.21272/jes.2017.4(1).e1

DOI: 10.21272/jes.2017.4(1).e1

Research Area: Modern Energy Efficient Technologies

Abstract: Based on the analysis of the advantages and shortcomings of the oxygen-converter production in Ukraine with combined oxygen and neutral gas blowing, a new combined-blowing technology by a three-level lance has been proposed, which privedes the prolongation of the converter lining stability and a more efficient post-combustion of the exhaust gases with the prevention of local wear of the lining and intensive scraping of the lance body and the unit mouth. During the laboratory-industrial working-out of the proposed technology it was established that, depending on the level of the slag-metallic emulsion, two main post-combustion modes can be distinguished. The post-combustion process must be organized in such a way that the torches are within a half-diameter area of the outlet CO stream that prevents the torch’s effect on the converter lining.

Keywords: converter, combined oxygen and neutral gas blowing, three-level lance, post-combustion of the exhaust gases, еnergy saving.

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