Proceedings of the Seminar on Steelmaking, Casting and Non-Ferrous Metallurgy

Title

BOF PROCESS OPTIMIZATION AND TECHNOLOGY IMPROVEMENTS – THE 5 MTPY PROJECT FOR TERNIUM BRAZIL

Authorship

Carvalho, Daniel; Castro, Herbert; Demuner, Leonardo; Viana, Marcos

Carvalho, Daniel

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Castro, Herbert

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Demuner, Leonardo

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Viana, Marcos

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DOI

10.5151/2594-5300-33618

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Abstract

Intensive process and technology improvements related to the BOF converter — the key process to increase steel plant productivity and stability — have been performed at Ternium Brazil. This paper details the road map for process developments and investments in equipment technology, as well as the results achieved. The main topics of this development are the process control and optimization systems, slag forming model, oxygen blowing pattern, end-of-blow point control and slag carryover control. The outcomes of this development are improvements in the reblow rate, end-of-blow oxidation, direct tapping, slag carryover, slopping ratio, metallic yield and lining life.

Keywords

BOF, LD converter, steel plant, melt shop, Dephosphorization, Process optimization, slag dissolution