Boehmite produced by a seeded hydyothermal process and ceramic bodies produced therefrom
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United States of America Patent
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Jan 10, 1989
Issued Date -
N/A
app pub date -
Dec 16, 1987
filing date -
Aug 11, 1987
priority date (Note) -
Expired
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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.
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