method of making plaster of paris in .Översätt den här sidan
Method of manufacturing plaster of paris - A method of manufacturing plaster of Paris which comprises introducing finely divided gypsum and hot gas into a drying zone and passing the hot gas upwardly through said zone to form a fluidized liquid-like bed of gypsum particles .having a level therein, maintaining the gypsum is particles in said drying zone for a time sufficient to drive off ...
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