Elastic damage characterization of ilmenite freeze lining
DOI:
https://doi.org/10.17159/Abstract
A furnace freeze lining is a safety and economic necessity for a number of smelting operations. The presence of the freeze lining is challenged by furnace power imbalances. Numerous models have been produced to model the growth and depletion of the freeze lining due to power imbalances, however no model exists for the thermo-mechanical damage of the freeze lining.
This study provides an initial pathway for modelling freeze lining thermo-mechanical damage through literature and experiments. The work is applied to ilmenite freeze linings.
A methodology under the framework of continuum damage mechanics is proposed to model mechanical damage of the freeze lining due to phase changes, thermo-physical changes and constrained thermal expansion.
The modified power law proved to be the best predictor of softening response of the drill cores used to represent the freeze lining. Damage driving parameters were extracted from the raw data and governing equations of the damage driving parameters with respect to temperature were derived for use in a Finite Element Method (FEM) code.
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Copyright (c) 2024 Arthur Mabentsela, Aubrey Mainza
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