ANDRITZ Guide for FGD / Gypsum Dewatering
4 ANDRITZ Guide for FGD/Gypsum Dewatering / January 2013 FGD / Gypsum Applications FGD Process – Gypsum Dewatering Gypsum slurry mostly dewatered by a twostage process: 1. Slurry is prethickened and partly classified by a set of hydrocyclones in first step. Though not very common, static thickeners can be used alternatively. 2.