Plaster of Paris Feed Rate: Hopper Design

Hello Community,

Can anyone help me out with calculating Plaster of Paris (POP) discharge Flow Rate of the given dimensions of Hopper.

Material:Plaster of Paris

Hopper Dimensions:1300mm

Outlet Dia=178mm

Angle of Repose=55 Degree

MOC:SS-304 

Hopper Capacity:1.5Tonnes

Problem Statement:Struggling to get expected Flow rate of 60kg/min

If any further details you need kindly contact on darshan.kamdar@dynovoglobal.com

Thanks in advance.