Abstract
Molten MgCl2 generally sold as a kind of waste at low price after cooling, which caused the waste of resource and energy. In order to solve the problem, a new method named “situ pyrolysis of molten magnesium chloride” was proposed. The molten MgCl2 produced by vacuum distillation in magnesium thermal reduction process was treated by the direct oxidation thermal decomposition method to produce super fine MgO with high purity. The magnesium produced by thermal reduction of MgO could be returned to the boiling chlorination of high titanium slag. The new cycle of magnesium and chloride in titanium sponge production was achieved. Based on the thermodynamic analysis of the reaction between O2 and MgCl2, the single factor experiments had been done. The optimal reaction condition was determined and the impact of each factor in the pyrolysis process was studied.
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