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The effect of SiC used as antioxidant in carbon-containing CaO–ZrO 2 refractories and the behaviour of SiC in CO gas were studied. SiC was found to react initially with CO to form SiO 2 (s) and C(s) at ∼1200°C, and then the formed SiO 2 reacted with CaO in the refractories to form belite (2CaO·SiO 2 ). The refractory microstructure was modified by addition of SiC. Due...
Kinetics of oxidation and disappearance of graphite in MgO-C refractory bricks have been investigated in the temperature range from 1000 to 1200 o C, where graphite is mainly consumed by gaseous oxygen in air. A mathematical model, including kinetic parameters, has been proposed to explain the extent of oxidation with time.
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