In the process a slurry of alumina, preferably a microcrystalline boehmite pseudoboehmite intermediate, is prepared in an acidic aqueous medium and droplets of the slurry are passed through air into a column containing an upper body of water immiscible liquid and ammonia and {HEAD ~ a lower body} of {TAIL ~ aqueous coagulating agent} 
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In the process a slurry of alumina , preferably a microcrystalline boehmite pseudoboehmite intermediate , is prepared in an acidic aqueous medium and droplets of the slurry are passed through air into a column containing an upper body of water immiscible liquid and ammonia and { HEAD ~ a lower body } of { TAIL ~ aqueous coagulating agent }
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