Title

HOT BLAST STOVE CAMPAIGN EXTENSION REPAIRS AT OPERATING TEMPERATURE

Authorship

Engel, Edo; Barel, Johan; Veek, Rob Van Der; Bloem, Jan

Engel, Edo

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Barel, Johan

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Veek, Rob Van Der

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Bloem, Jan

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DOI

10.5151/2594-357X-30355

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Abstract

Hot Blast Stove Technology has been developed to such an extent that low cost hot metal production for over 30 years without major repairs has become achievable, making the decision for a campaign length between 5 to over 30 years a design choice for the plant owner/operator. Some of the earlier examples of designs capable of such long campaign lengths are currently close to the 50th year of their running campaign. These examples are found especially in Europe and North America. Along the duration of these campaigns, repairs to subsystems such as burners, hot blast outlets etc. may be required. Depending on a plant’s up and down stream production capacities, the repairs may have to take place in the shortest possible time frame to minimize production loss. This article discusses an approach for intermediate repairs, executed while keeping the majority of the system at operating temperature.

Keywords

Hot Blast System, Hot Blast Stove, Campaign Extension, Hot Repair

Hot Blast System, Hot Blast Stove, Campaign Extension, Hot Repair