| 摘要 |
Magnesium metal is produced in a two-stage chemicothermal process employing metallothermic reduction of MgO using Al metal, present in an Al alloy, as the reducing metal in one stage according to the reaction 2Al + 3MgO DELTA 3Mg + Al2O3 and employing a carbothermic reduction, Al2O3 + 3C DELTA 2Al + 3CO in the other stage to regenerate the Al metal for recycling back to the metallothermic reduction step. The process substantially avoids the reversion reaction, Mg + CO -> MgO + C, by separating the formation of Mg from that of CO (carbon monoxide) and does not rely on having to remove slag from the reactors.
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