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US 5,514,361 AGranted
Method for making a synthetic meixnerite product
AssigneeAluminum Company of America
InventorsEdward S. Martin, Alan Pearson
Life of this patent
Estimating the term…
Abstract
There is disclosed an improved method for making synthetic meixnerite having reduced carbonate contamination levels and a x-ray diffraction pattern resembling that shown in FIG. 1, the meixnerite is made by combining magnesium oxide and transition alumina, preferably an activated alumina powder having a BET surface area of about 100 m.sup.2 /g or greater, in a substantially carbonate-free environment.
Claims3
A method for making synthetic meixnerite comprises:
- (a) reacting powdered magnesium oxide with a transition alumina having a B.E.T. surface area of about 100 m.sup.2 /g or more in a substantially carbonate-free solution to form a meixnerite compound, said reacting including the steps of:
- (i) combining the magnesium oxide and transition alumina into an agglomerate;
- and
- (ii) exposing said agglomerate to liquid water heated to one or more temperatures between about 80.degree.-180.degree. C. (176.degree.-356.degree. F.);
- and
- (b) separating said meixnerite compound from the solution.
3 more elements
Dependencies are inferred from the claim text.