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Although thermodynamically feasible,in p...

Although thermodynamically feasible,in practice, magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium.Why?

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Mg reduces .A l_2 O_3. at a temperature higher than .1350^circ C.. This temperature is so high that the process become ecoonomically unviable and technologically difficult.
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
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