Blast furnace hearth life: Models for assessing the wear and understanding the transient thermal states

Conference · Fri Jan 01 04:00:00 EST 1993 · Proceedings, Ironmaking Conference; (United States)

OSTI ID:6382687

Leprince, G; Steiler, J M; Sert, D ^[1]; Libralesso, J M ^[2]

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1. IRSID, Maizieres-les-Metz (France)
2. SOLLAC, Dunkerque (France)

Nowadays, the hearth is the most critical part of the blast furnace when aiming at a long campaign life. Consequently, a better understanding of refractories wear as well as flow mechanisms has become primordial for determining and, if possible, preventing the erosion process. Efforts of measurements have therefore been made during the blast furnace repairs, with the implementation of numerous thermocouples in the carbon bricks. Hence, it becomes possible to monitor and model continuously the internal state of the hearth in accordance with the measured temperature field. Since 1990, different numerical models have been developed and used with two principal aims: - to assess regularly the internal erosion line of the blast furnace hearth all along the campaign life, and - to simulate and if possible, to explain the important transient thermal states observed on some large blast furnaces. This paper describes the content of the two models used nowadays on most of the French blast furnaces and presents the main results obtained in accordance with the industrial variations of temperatures.

• OSTI ID: 6382687
• Report Number(s): CONF-9303222--
• Conference Information: Journal Name: Proceedings, Ironmaking Conference; (United States) Journal Volume: 52
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
BLAST FURNACES
COMPUTER CODES
ENERGY TRANSFER
EROSION
F CODES
FURNACES
HEAT TRANSFER
LIFETIME
M CODES
MATHEMATICAL MODELS
REFRACTORIES
SERVICE LIFE
TEMPERATURE DISTRIBUTION
TEMPERATURE MEASUREMENT
THREE-DIMENSIONAL CALCULATIONS
TRANSIENTS
TWO-DIMENSIONAL CALCULATIONS