Procedure to produce drium aluminum sulfate. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the obtaination of dry aluminum sulfate. Consists in treating a substance containing alumina and insoluble impurities with sulfuric acid at temperatures between 120ºc and 155ºc, obtaining more aluminum waters containing 6 to 11% alumina, that separate from impurities and are treated with a substance that contains aluminum trihydrate and additional sulfuric acid. (Machine-translation by Google Translate, not legally binding)