Process for the production of dispersible boehmite

Details Process for the production of dispersible boehmite Process for the production of dispersible boehmite

C - Chemistry, Metallurgy

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F

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C01F 7/44 (2006.01) C01F 7/02 (2006.01)

Patent

CA 2003669

ABSTRACT The present invention is directed to a process for producing a finely divided dispersible boehmite (alpha-alumina monohydrate) from coarse grain particles of aluminum trihydrox- ide. The aluminum trihydroxide is subjected to calcination in an amount sufficient and for a time sufficient to produce very fine boehmite particles embedded in a matrix chi-alumina, with the matrix material dissolved in either an alkali or acid solution, thereby liberating finely divided boehmite particles of high purity which can readily be formed into aqueous dispersions which are stable and do not gel on standing for long periods of time.

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