The influence of gypsum quality, autoclaving time and grinding on the setting time of alpha-hemihydrate

Absztrakt

The aim of this work is to model the influence of grinding and gypsum quality on the setting time of α-hemihydrate using the design of experiments (DoE) method. The setting time of the binder is an important property determined by the particle size distribution of hemihydrate crystals. In this study, the change in particle size and setting time of hemihydrate was observed by varying the particle size and crystal water content of raw FGD gypsum, duration of autoclaving and grinding intensity as model parameters.