
Gypsum ore rotary dryer in bahamas. Oct 09 2017 Gypsum ore from quarries and underground mines is crushed and stockpiled near a plant As needed the stockpiled ore is further crushed and screened to about 50 millimeters 2 inches in diameter If the moisture content of the mined ore is greater than about 05 weight percent the ore must be dried in a rotary dryer or a heated roller mill.