Production and installation procedure hemihydrate gypsum from natural or synthetic gypsum by calcination by direct contact with hot gases transport.

摘要

Production process ESCAYOLA hemihydrate by calcining PLASTER NATURAL OR SYNTHETIC IN AT LEAST ONE SURGE ZONE, which states PLASTER AND FUMES HOT ARE INTRODUCED IN THE TOP OF THE FIRST AREA SURGE, and calcining is performed in a cocurrent HOT GASES particles MATERIALS FOR cIRCULATION dehydrate in descending direction along cyclonic motion in each zone SURGE then circulating in the central area of ​​each zone SURGE AS upstream. The invention also relates to a device for IMPLEMENTATION OF THIS PROCEDURE.