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专利名称：Process for the preparation of spherical
alumina
发明人：Meyer, Arnold,Noweck, Klaus, Dr.申请号：EP83102758申请日：19830321公开号：EP0090994A3公开日：19840905
摘要：for the manufacture of spherical alumina is tonerdehydrat.consisting ofpseudob\öhmitb\öhmit in w\ä\ßrig dilute acid by intensive stirring atonerdesol with a solids content of more than 20 to 40% by weight.-% alumina is
produced and in the presence of 1 to 10 wt.% urea in a forms\äule.in the upper partwith a liquid hydrocarbon and aqueous ammonia solution in the lower part and is filled atroom temperature and exhibitsleak and the formed globular particles dried andactivated. the formed spherical particles may also be subjected to knownalterungsbehandlung.
申请人：Condea Chemie GmbH
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