fluidised opposed jet milling (grinding air pressure 6 barg, nozzle 0 16mm) 1250 dm3 grinding bin volume, 80 mbar permissible operating pressure in grinding bin, max operating pressure in grinding bin, 5- nozzles, nozzle diameters 14mm, 16mm, 18mm, classifier has 3-wheels, each wheel with 60 vanes wide pitch, narrow pitch 120 vanes, max wheel speed 4000 rpm each whees driven by 5.12 - 16 kw, 3/50/415 volt, 940/2940 rpm motor, (1) 1100 liter carbon steel feed hopper weld dished top, weld coned bottom, bottom outlet with 150mm diameter carbon steel screw conveyor, 15.1 rpm speed,