φ3.2×(6.5+2)m Coal Mill

I. Main technical parameters

1.   Specification φ3.2×(6.5+2)m

2.   Drying chamber length 2m

3.   Grinding chamber length 6.5m

4.   Grinding material Anthracite

5.   Productive capacity 18-28t/h

6.   Inlet raw coal grain size not more than 25mm,outlet coal powder fineness 80μm screen residue 3-5%

7.  Inlet raw coal moisture not more than 12%,outlet coal powder moisture less than1%

8.   Inlet gas temperature less than 350 degree, outlet gas temperature 60-80°C

9.   Mill rotating speed16.9r/min

1. Drive type: edge drive
2. Max. grinding media load 50t
3. Filling ratio23.5%
4. Main bearing cooling water 4t/h
5. Main motor  model YRKK560-8  IP44

Power 710KW,

Motor voltage 6KV

Full load rotating speed743r/min

1.    Main gear box   model JDX630

                  Speed ratio 5

                  Input rotating speed 743r/min

1.    Inching drive motor modelY200L-8  IP44   power 15KW

            Full load rotating speed730r/min  voltage 380V

1.   Inching drive gear box model YNS555-90

speed ratio I=90

            Disc grinding rotating speed 0.175r/min  Input rotating speed 740r/min

1. Cooling type: water cooling
2. Thin oil station GYXZ-25A