Title

REGENERADORES DE CALOR – ULTIMOS DESENVOLVIMENTOS, AVALIAÇÃO E EXTENSÃO DE CAMPANHA

HOT BLAST STOVES – LATEST DEVELOPMENTS, ASSESSMENT AND LIFETIME EXTENSION

Authorship

Schaub, Eric; Castagnola, Cristiano; Münzer, Johannes; Oliveira, André; Vieira, Luis Fernando

Schaub, Eric

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Castagnola, Cristiano

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Münzer, Johannes

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Oliveira, André

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Vieira, Luis Fernando

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DOI

10.5151/2594-357X-30555

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Abstract

Hot Blast Stove Systems are an important equipment of a Blast Furnace plant. During the last years, performance requirements and operation practice for the Hot Blast Systems have changed and have a big influence on the Blast Furnace operation. Therefore it is necessary to keep the Hot Blast System in proper condition in order to maintain the production capacity of the Blast Furnace. It is important for operators to know the condition and relevant constrains of a Hot Blast Stove Plant. Assessing its condition on a regular basis, especially in advance of a Blast Furnace relining is therefore advisable. Considering the individual condition of the Hot Blast Stove Plant, improvements in operation, but also specific and dedicated repairs might be implemented. Design improvements can be implemented as well during such repairs. This paper will describe some of these design improvements, will illustrate their implementation in new hot blast stoves but will also describe repair methods for existing stoves. In addition new developments became popular during the last decade, like the so called Dome Combustion Stoves, which was invented already 30 years ago in Western Europe. Paul Wurth’s development in this regard will be discussed in this paper as well.

Keywords

Sistemas de sopro quente, Regeneradores de calor, Revestimento refratário, Avaliação de regenerador

Hot blast systems, Hot stoves, Refractory lining, Hot stoves assessment