Grinding and calcining of gypsum with Pfeiffer grinding plants
Grinding and calcining of gypsum with Pfeiffer grinding plants TEXT Eckhard Sander, Gebr. Pfeiffer SE, Kaiserslautern/Germany For the production of plaster products natural gypsum, synthetic gypsum or a mixture of both are calcined. Depending on the production process two different modifiions of the hemihydrate CaSO 4 x ½ H 2 O are obtained ...