i have to convey welding flux for following condition

by positive pneumatic conveying.

material: welding flux

bulk density: 1082.2 kg/m^3

particle density: 2857.14 kg/m^3

particle size: 0.3 to 2.0 mm

particle shape: irregular

capacity: 1500 kg/hr

material temperature: 160 deg c

conveying air temperature; 200 deg c

distance:

1) 5 m horizontal

2) 90 deg bend, radius = 1000 mm

3) 12 m vertical lift

4) 90 deg bend, radius = 1000 mm

5) 120 m horizontal

i calculated pressure drop for 4" standard pipe. values are as follows.

air velocity = 18 m/s

pressure drop = 0.4 bar

anybody please give reply ■