Title

CROSS–OVER REPAIRS AND INSTALLATION OF PRESSURE EQUALIZING SYSTEM AT POSCO GWANGYANG

CROSS–OVER REPAIRS AND INSTALLATION OF PRESSURE EQUALIZING SYSTEM AT POSCO GWANGYANG

Authorship

MEIJER, KOEN; NIEMEIJER, FRANK; LAAR, REINOUD VAN; BONGRAE, CHO; GAPYEOL, KIM

MEIJER, KOEN

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NIEMEIJER, FRANK

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LAAR, REINOUD VAN

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BONGRAE, CHO

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GAPYEOL, KIM

I am this author

DOI

10.5151/2594-357x-35Red - 477-484

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Abstract

The cross–over is a critical part of the external combustion chamber stove because relative movements of both domes due to thermal expansion and pressure must be absorbed in the cross–over construction. To allow these movements the cross–over shell is disconnected in the center and a sliding joint is present in the refractory. The sliding joint in the refractory forms a weak point in the construction and can result in flow of hot gases or hot blast to the outer shell. Therefore hot spots frequently occur on the shell of a cross–over. This paper presents a solution to this problem.

The cross–over is a critical part of the external combustion chamber stove because relative movements of both domes due to thermal expansion and pressure must be absorbed in the cross–over construction. To allow these movements the cross–over shell is disconnected in the center and a sliding joint is present in the refractory. The sliding joint in the refractory forms a weak point in the construction and can result in flow of hot gases or hot blast to the outer shell. Therefore hot spots frequently occur on the shell of a cross–over. This paper presents a solution to this problem.

Keywords

Stoves, Cross-over, Hot blast system, Ironmaking

Stoves, Cross-over, Hot blast system, Ironmaking