Because it retains its strength at very high temperatures.
It is considered a refractory material with a melting point of 6500 degrees F. It is
also very non-reactive with other materials that might be put into the furnace and is
even used to make crucibles - containers used to melt other
substances.
Saturday, October 26, 2013
Suggest one reason why magnesium oxide is used to line the inner surface of a furnace.
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