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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

48° Seminário de Redução de Minérios e Matérias-primas — vol. 48, num.48 (2018)

Title

ASSESSMENT OF HEARTH REFRACTORY WEAR IN OPERATING BLAST FURNACES

ASSESSMENT OF HEARTH REFRACTORY WEAR IN OPERATING BLAST FURNACES

Authorship

Ghorbani, Hamid; Chomyn, Kyle; Al-Dojayli, Maher; Sadri, Afshin

Ghorbani, Hamid
Ghorbani, Hamid

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Chomyn, Kyle
Chomyn, Kyle

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Al-Dojayli, Maher
Al-Dojayli, Maher

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Sadri, Afshin
Sadri, Afshin

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DOI

10.5151/2594-357X-31161

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Abstract

The refractory system in blast furnace hearth is subject to harsh conditions including chemical attack and thermal / mechanical loads. The longevity of hearth is vitally important in achieving the target furnace campaign life and avoiding premature and costly repairs. Consequently, it is important to monitor the hearth refractory wear including the temperature distribution and protective skull formation. This paper presents a novel approach to simultaneously utilize Acousto-Ultrasonic Echo (AU-E) non-destructive examination and thermocouple / cooling system data to improve accuracy of hearth refractory wear predictions in operating blast furnaces. Example applications of this assessment methodology on blast furnaces are discussed. This assessment methodology is widely used to help prolong the blast furnace campaign life.

 

The refractory system in blast furnace hearth is subject to harsh conditions including chemical attack and thermal / mechanical loads. The longevity of hearth is vitally important in achieving the target furnace campaign life and avoiding premature and costly repairs. Consequently, it is important to monitor the hearth refractory wear including the temperature distribution and protective skull formation. This paper presents a novel approach to simultaneously utilize Acousto-Ultrasonic Echo (AU-E) non-destructive examination and thermocouple / cooling system data to improve accuracy of hearth refractory wear predictions in operating blast furnaces. Example applications of this assessment methodology on blast furnaces are discussed. This assessment methodology is widely used to help prolong the blast furnace campaign life.

Keywords

Blast Furnace, Hearth, Refractory, wear, NDT, Thermocouple

Blast Furnace, Hearth, Refractory, wear, NDT, Thermocouple

How to refer

Ghorbani, Hamid; Chomyn, Kyle; Al-Dojayli, Maher; Sadri, Afshin. ASSESSMENT OF HEARTH REFRACTORY WEAR IN OPERATING BLAST FURNACES , p. 13-22. In: 48° Seminário de Redução de Minérios e Matérias-primas, São Paulo, 2018.
ISSN: 2594-357X , DOI 10.5151/2594-357X-31161