1. Controlling part: Full Automatic 2. Capacity of Gypsum powder machine line: 30, 000-300, 000 tons per year 3. Fuel: Coal, natural gas, heavy oil, diesel 4. Raw material: A)Natural Gypsum Rock. Content of CaSO4@2H2O ingypsum mine >80%. B)Desulfurization gypsum C)Dephosphorization gypsum 5. Gypsum powder quality standard: GB/T 9776-1988 Gypsum powder: 80-100mesh The initial setting time: Shall not be less than 6 minutes, The final setting time: Shall not be more than 30 minutes 6. Main Technology(Nature gypsum rock) Gypsum mine - first breaking -second breaking - grinding - calcining - aging -finished products (CaSO4.1/2H2O)