... 7250,000185-7300,000215-7350,000245-7 .1 feeder (screw feeder or vertical feeder , anyone is ok,according to the customer ... metered building gypsum is evenly conveyed to a mixer by a flash screw conveyor and the water ... is conveyed to the mixer by pneumatic valves. The evenly mixed slurry by ... the mixer will be poured into forming machine, the ...