Procedure of preparing and using calcium sulphate dihydrate from calcium sulphate hemihydrate, for the manufacture of paper

摘要

Preparation method and use of Calcium sulphate Dihydrate in Crystalline form from Calcium sulfate hemihydrate for Papermaking. Stop adding so4ca 1 / 2 H2O, called a few elongated Crystals when added to an aqueous dispersion of Cellulose Fibers are attached to them.Producer is to add Surfactants, Emulsifying, Dispersing, Accelerators or inhibitors to control the speed and size of the crystals.