Title

LD STEELMAKING AT VOESTALPINE STAHL GmbH, LINZ

LD STEELMAKING AT VOESTALPINE STAHL GmbH, LINZ

Authorship

Moser, Herbert; Jandl, Kilian; Apfolterer, Reinhard; Rössler, Roman

Moser, Herbert

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Jandl, Kilian

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Apfolterer, Reinhard

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Rössler, Roman

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DOI

10.5151/2594-5300-0011

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Abstract

The LD steelmaking plant #3 of voestalpine Stahl Linz with its three 150-ton converters is one of the most efficient and productive steelmaking plants in the world, where 4.4 million tons of slabs are produced with an average daily production of 80 heats. Over the past few years, the refractory lifetime of the converters was doubled, the three-converter operation was raised to more than 78 %. Because of lack of hot metal at the location, the specific scrap rate per Ton of good slab was increased up to 330 kg/t and the specific hot-metal rate was reduced to 776 kg/t. The Slag Splashing technology was implemented, hot-metal desulphurization was converted from torpedo ladle operation to co-injection in the charging ladle.

The LD steelmaking plant #3 of voestalpine Stahl Linz with its three 150-ton converters is one of the most efficient and productive steelmaking plants in the world, where 4.4 million tons of slabs are produced with an average daily production of 80 heats. Over the past few years, the refractory lifetime of the converters was doubled, the three-converter operation was raised to more than 78 %. Because of lack of hot metal at the location, the specific scrap rate per Ton of good slab was increased up to 330 kg/t and the specific hot-metal rate was reduced to 776 kg/t. The Slag Splashing technology was implemented, hot-metal desulphurization was converted from torpedo ladle operation to co-injection in the charging ladle.

Keywords

Converter, Refractory, hot metal ratio, hot metal desulphurization, slag detection

Converter, Refractory, hot metal ratio, hot metal desulphurization, slag detection