What is the melting point of aluminum oxide and cryolite mixture?
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Aluminium oxide has a very high melting point (over 2000°C) so it would be expensive to melt it. Aluminium oxide does not dissolve in water, but it does dissolve in molten cryolite. This is an aluminium compound with a lower melting point than aluminium oxide.
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melting point of aluminium oxide is 2072°C
melting point of cryolite mixture is 1012°C
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