Title

TOP COMBUSTION STOVE TAILOR MADE HOT REPAIR

TOP COMBUSTION STOVE TAILOR MADE HOT REPAIR

Authorship

OVERLAENDER, JOERG; DINIZ, JOSÉ CARLOS; ESSER, FRANK

OVERLAENDER, JOERG

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DINIZ, JOSÉ CARLOS

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ESSER, FRANK

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DOI

10.5151/2594-5327-33436

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Abstract

The common hot blast stoves with internal combustion chamber operated satisfactory up to hot blast temperatures of approx. 1250 °C and the blast limitation of 280.000 Nm3/h. Thus the design of these stoves only differed slightly from each other until the moment when the demand for higher efficiency of blast furnace operation required higher hot blast temperatures, for that, a top combustion stove design represents one of the options. The reason for the development of this kind of stoves was the former weakness of stoves with internal combustion chamber, especially in the area of the combustion chamber / checker chamber division wall. The idea was basically to avoid the division wall at all. To overcome the problems of stove shutdown, DOMINION GmbH & DME ENGENHARIA introduced to the market a pioneer methodology due to the need of a short time for this revamping. Top Combustion Stove Hot repair was never done anywhere in the whole world until the first repair done in Sept, 2018 with success and zero accident. The proposal of this paper is to show how important is to keep stoves lifetime in between 25 to 40 years campaign avoiding cooling down procedure, which drastically compromises the stove life at each occurrence.

Keywords

TOP COMBUSTION STOVES; TAILOR MADE HOT REPAIR; HOT BLAST STOVES LIFE CAMPAIGN; REFRACTORY HOT REPAIR

TOP COMBUSTION STOVES; TAILOR MADE HOT REPAIR; HOT BLAST STOVES LIFE CAMPAIGN; REFRACTORY HOT REPAIR