Processes for reacting bastnaesite with alkaline-earth metals
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United States of America Patent
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Apr 8, 1997
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app pub date -
Dec 28, 1995
filing date -
Jul 30, 1993
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Abstract
Bastnaesite and magnesium-containing materials can be chemically reacted by use of reactions wherein alumina is made into a sol by use of a mono-protonic acid and then reacted with a magnesium-containing ingredient (e.g., magnesium acetate) and a bastnaesite ingredient such that, upon spray drying and calcination of the resulting composition, the bastnaesite is chemically reacted with magnesia to form a bastnaesite/magnesia/alumina compound having SO.sub.x activity.
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