Study on the thermodynamic and experimental carbothermic reduction magnesia

摘要

In this paper carbothermic reduction magnesia was studied. Thermodynamic analysis showed that the reaction between magnesia and coal occurred easily under vacuum conditions, and the initial reaction temperature decreased with reducing the total pressure. The actual reaction temperature is higher than the initial reaction temperature due to the solid-solid phase diffusion. Under the temperature of 1753K and the pressure of 30Pa, metal magnesium was obtained. Conversion degree increased with increasing CaF2. Prevention of back reaction of carbothermic reduction magnesia needs further investigation.