| abstract |
Magnesium aluminate spinel is prepared by hydrothermally slaking an aqueous slurry of a spinel precursor, which can be (a) a mixture of boehmite alumina and magnesium precursors, (b) oxide Aluminum magnesium or aluminum magnesium hydroxide, and (c) mixtures thereof. At least one of the matured slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce magnesium aluminate spinel. |