Sustainability of gypsum products as a construction material
Pieces up to 35 mm in size burn Equivalent fuel consumption for a rotary dryer is 40–50 kg per 1 tonne of hemihydrate When calcination is finished gypsum is ground in ball mills The ground gypsum is collected in a cyclone Download Download fullsize image Fig 256 Gypsum production in rotary dryers Hopper 1 Feeder 2 Rotary dryer 3 Dust collector 4 Conveyer for finished product 5