Process for agglomerating a substance from a liquid system
AssigneeCiba-Geigy Corporation
InventorsRoland Haberli, Hans Mollet, Christel Tempel
Life of this patent
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Abstract
Described is a process for agglomerating a substance from a liquid system with subsequent separation and drying, which liquid system is composed of at least two liquids, which at 20.degree. C. are completely miscible with one another.
Claims23
In a process for agglomerating a solid substance from a liquid system, separating the agglomerated solid substance from said liquid system and drying the agglomerated substance, the improvement comprising:
- (a) suspending the solid substance to be agglomerated in a first liquid not dissolving said substance,
- (b) adding to the suspension an agglomerating amount of a second liquid which is completely miscible with the first liquid;
- said second liquid capable of dissolving said solid substance, and
- (c) thoroughly stirring the mixture of said solid substance and first and second liquid until agglomerates of the solid substance are formed in the liquid system.
In a process for agglomerating a solid substance from an organic liquid system, separating the agglomerated solid substance from the liquid system and drying the separated agglomerated solid substance, the improvement comprising continuously adding, with stirring, the solid substance to be agglomerated to an agglomerating amount of a mixture consisting of a first organic liquid which does not dissolve said solid substance, and a second organic liquid which dissolves said solid substance and which is completely miscible with the first liquid, and stirring the solid substance containing liquid system, until agglomerates of said solid substance are formed.
A process for agglomerating a solid substance from an organic liquid system, separating the agglomerated solid substance from the liquid system and drying the separated agglomerated solid substance, the improvement comprising continuously adding, with stirring, an agglomerating amount of a mixture of liquids, at least one of which is organic, and consisting of a first liquid which does not dissolve said solid substance and a second liquid which dissolves said solid substance and which is completely miscible with the first liquid, to said solid substance and stirring the resulting liquid system, until agglomerates of the solid substance are formed.
Dependencies are inferred from the claim text.