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Suggested rubber shell liners & lifter bar thickness (4 replies)
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i am designing rubber lining for ball mill with below given operating condition can you please suggest me approximate thickness of shell liners and lifter bar ?
OPERATING CONDITIONS:
1. MATERIAL : MAGNETITE ORE + URANIUM ORE (COMBINED)
2. FEED SIZE : MAGNETITE ORE, 80% (-) 125microns & URANIUM ORE, 80% (-) 75MICRONS
3. PRODUCT SIZE : 90% (-) 53microns (+/- 5microns) AT HYDROCYCLONE OVERFLOW.
4. TYPE OF GRINDING : WET, continues
5. CAPACITY
(i) COMBINED FRESH FEED RATE : 11.0 tph DESIGNED & RATED
(iI) MAGNETITE ORE : 6.6 tph DESIGNED & RATED
(iII) URANIUM ORE : 4.4 tph DESIGNED & RATED
6. MILL SPEED : 22rpm (APPROX).
7. BALL SIZE DISTRIBUTION : 40mm DIA. - 12.5mt; 25mm DIA. - 8.5mt
8. MATERIAL OF : HIGH-CHROME
GRINDING MEDIA
9. WT. OF GRINDING MEDIA : 21mt.
10. MILL HEAD ANGLE : 11.5 DEGREE
11. SP. GR. OF MAT'L. : 5.15 FOR MAGNETITE ORE & 2.80 FOR URANIUM ORE
12. BWI : MAGNETITE ORE - 17.2kWh/mt. & URANIUM ORE - 11.0kWh/mt.
13. LINING TYPE REQD. : MILL SHELL SHALL BE LINED WITH SUITABLE RUBBER LIFTER BAR WITH INTERMEDIATE LINER ALONG EACH ROW. MILL HEADS (FEED END & DISCH. END) SHALL BE LINED WITH SUITABLE RUBBER LIFTER BAR WITH INTERMEDIATE LINER.
14. FIXING WITH SHELL : BOLTED & HEADS
15. Mill ROTATION : C.C.W. LOOKING FROM FEED END.