The temperature of the boundary pig iron/refractory as variable to determine the corrosion mechanism of the blast furnace hearth
DOI:
https://doi.org/10.3989/revmetalm.1998.v34.iExtra.733Keywords:
Blast furnace, Hearth, Wear, RefractoryAbstract
The wear of materials in the blast furnace could be carried out under the consideration of abrasion mechanisms or with the prevalence of the components chemistries and erosive resulting as of the circulation of flowing on the refractory. Nevertheless, although in determining situations the abrasion or the components chemistries could result the control mechanism, it is necessary to consider, that all the abrasion, erosion, chemical corrosion, adhesion and thermal waste-thermal shock "they cooperate" to the degradation of the refractory of blast furnace. For whatever the mechanisms that intervene in the wear of the materials, it results interesting to know the temperature boundary of the refractory with the solids, liquids or present gases in the furnace. In the report, it will be developed from specific form, the importance that has the temperature in the boundary refractory-pig iron on the wear of the materials of the hearth. The different hypothesis of transport (energy, quantity of movement and material) more adequate for the obtaining of the boundary temperatures will be discussed.
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