Boehmite produced by a seeded hydyothermal process and ceramic b

Details Boehmite produced by a seeded hydyothermal process and ceramic b Boehmite produced by a seeded hydyothermal process and ceramic b

1987-12-16

1989-01-10

Lieberman, Paul

Abrasive tool making process, material, or composition

Miscellaneous

51309, 423628, B24D 300

Patent

active

047971398

ABSTRACT:
Microcrystalline boehmite suitable for conversion to anhydrous alumina products is produced by hydrothermal treatment of precursor alumina raw material at controlled pH and in the presence of microcrystalline boehmite seed material. Reaction mix may include submicron seed material for seedling for later conversion of the microcrystalline boehmite to alpha alumina. Removal of metal cations by ion exchange is employed when high purity product is required. Other materials may be added to reaction mix. Production of alumina products, catalysts, and ceramic bodies is disclosed.

REFERENCES:
patent: 3615306 (1971-10-01), Worcester
patent: 4297325 (1981-10-01), Scherizer et al.
patent: 4543107 (1985-09-01), Rue
patent: 4574003 (1986-03-01), Gerk
patent: 4623364 (1986-11-01), Cottringer et al.

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