A procedure to reduce the deposit of calcium sulfate from washing liquids, during the washing of calcium sulfate hemihydrate. (Machine-translation by Google Translate, not legally binding)

摘要

A process for reducing calcium sulfate deposition from washing liquids during the washing of calcium sulfate hemihydrate, which method comprises contacting the hemihydrate crystals after they have been formed, but before or during the washing thereof, with an additive selected from alkylarylsulfonic acids, and condensed with an alcoholic oxide of an alcohol, phenol or an alkylphenol, or derivatives of such acids and condensates. (Machine-translation by Google Translate, not legally binding)