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Pressure Drop In Huge Grinding Mills

1.1.2.1 direct pressure method in direct air pressure blasting, the abrasive is fed from a pressurized contali er pressure vessel into a blast hose, as shown in figure 11-2.The compressed air line is piped to both the blast hose id upper portion of the pressure vessel.Air pressure usually 80 to 90 psi to both the hose and pressure.