Comparison has shown the advantage of ore transport by High Angle Conveyor from underground instead of conventional skip winding system.

1. COMPARISON BETWEEN SKIP
WINDING SYSTEM AND HIGH
ANGLE CONVEYOR FOR
VERTICAL TRANPORT THROUGH
SHAFT FROM UNDERGROUND
MINE
PRESENTED BY SHYAMAL KUMAR BAG

2. VERTICAL TRANSPORT BY
SKIP WINDER

3. BOTTOM DISCHARGE SKIP

4. SKIP

5. SCHEMATIC ARRANGEMENT FOR SKIP LOADING

6. S.K.BAG
SKIP LOADING AT PIT BOTTOM SKIP UNLOADING ARRANGEMENT AT PIT TOP
MEASURING
POCKETS
(AT PIT
BOTTOM)
SKIP
DISCHARGE
HOPPER (AT
PIT TOP)
ADDITIONAL HEIGHT AND INFRASTRUCTURES ARE REQUIRED
AT PIT BOTTOM & PIT TOP FOR SKIP SYSTEM, AS SHOWN

7. PLAN VIEW OF SKIP LOADING AT PIT BOTTOM (~25.5 M X 10 M)

8. ELEVATION VIEW OF SKIP LOADING (~50 M HEIGHT)

9. SKIP LOADING (SIDE VIEW)

10. HEIGHT REQUIREMENT FOR HEAD FRAME

11. Dimension
Method of winding
Cage Skip
A. Height of heap stead
Height of coal hopper
B. Height of cage
Height of skip
C. Suspension, chains,
detaching hook
D. Adjusting links &
capels
E. Over wind distance
F. Clearance between
“bell” & head sheaves
ft.
20 – 30
-
12 – 18
-
7 – 9
5 – 6
57
10 - 15
ft.
-
20 – 30
-
20 – 30
6
6
57
10 - 15
Total height of head
frame
111 to 135 119 to 144
TYPICAL DIMENSIONS FOR DETERMINING THE HEIGHT OF HEADFRAME

12. HEAD GEAR PULLEY STRUCTURE AT SURFACE

14. DOUBLE DRUM WINDER

15. KOEPE WINDING SYSTEM

16. SCHEMATIC ARRANGEMENT FOR KOEPE WINDING SYSTEM

17. TOWER MOUNTED WINDER
HEIGHT
REQUIREMENT OF
AROUND 40 M FOR
HEADFRAME AT
SURFACE FOR SKIP
SYSTEM

18. TOWER MOUNTED KOEPE WINDING DRUM

19. SCHEMATIC ARRANGEMENT FOR KOEPE WINDING SYSTEM

20. SKIP UNLOADING AT PIT TOP

21. SHAFT DIAMETER FOR SKIP SYSTEM
7 M SHAFT
DIAMETER

22. ALTERNATIVE VERTICAL
TRANSPORT BY HIGH ANGLE
CONVEYOR (HAC) SYSTEM

23. VERTICAL TRANSPORT THROUGH SHAFT BY HIGH ANGLE CONVEYOR

24. VERTICAL
TRANSPORT
THROUGH SHAFT BY
HIGH ANGLE
CONVEYOR (90
DEGREE)
U/G CONV. SHALL
DIRECTLY
DISCHARGE ONTO
HIGH ANGLE
CONVEYOR
HIGH ANGLE
CONVEYOR
DIRECTLY
DISCHARGE
ON TO
SURFACE
CONVEYOR

25. TAIL END OF HIGH ANGLE CONVEYOR IN UNDERGROUND – CONVEYOR CAN DIRECTLY DISCHARGE
(NO ADDITIONAL EXCAVATION SHALL BE NECESSARY AT PIT BOTTOM)
LOADING POINT
AT PIT BOTTOM

26. VERTICAL
STRUCTURE OF
HIGH ANGLE
CONVEYOR FROM
UNDERGROUND
S.K.BAG

27. DISCHARGE END OF HIGH ANGLE CONVEYOR AT SURFACE)
SURFACE
CONVEYOR

28. DISCHARGE END OF HIGH ANGLE CONVEYOR AT SURFACE – CONVEYOR SHALL DIRECTLY
DISCHARGE ON SURFACE CONVEYOR (SKIP HOPPERS, HEADGEAR STRUCTURE, WINDING ENGINE
HOUSE AT SURFACE SHALL BE ELEMINATED)

29. SHAFT DIA – 3.8 / 4.0 M
SHAFT DIA SHALL BE 3.8/4.0 M (6.5/7.0 M FOR SKIP)
HIGH ANGLE CONVEYOR

30. A SHORT VIDEO ON HIGH ANGLE CONVEYOR

31. TRANSFER POINT FROM ONE HIGH ANGLE CONVEYOR TO ANOTHER – FOR SHAFT DEPTH > 300 M

32. TRANSFER POINTS FROM ONE HIGH ANGLE CONVEYOR TO ANOTHER FOR VERY DEEP SHAFT
(DIA OF BORE HOLE – 16 FT & 12 FT ONLY)

33. HAC IN SHAFT (DIA
– 3.8/4.0 M)
HAC IN
OPEN PIT
INTEGRATED HAC SYSTEM FROM UNDEGROUND TO SURFACE – COMPARISON WITH SKIP SYSTEM
ADDITIONAL
DEPTH OF
40/50 M AT PIT
BOTTOM FOR
SKIP LOADING
ADDITIONAL
HEIGHT OF
40 M AT
SURFACE
SKIP
SYSTEM
SHAFT DIA FOR
SKIP ~ 7.5 M

34. REFERENCE APPLICATION OF HIGH ANGLE CONVEYOR IN SHAFT AT MIDWEST, USA

35. REFERENCE APPLICATION OF HIGH ANGLE CONVEYOR IN SHAFT AT MIDWEST, USA

36. COST COMPARISON BETWEEN SKIP & HIGH ANGLE CONVEYOR SYTEM (CASE STUDY)

40. 1.Receives material directly from underground conveyor and discharges directly on to
surface conveyor.
2. Material flow is continuous, the high angle conveyor can operate at modest speed
while taking up very little space in the shaft. 3.8 m diameter shaft is enough to
accommodate a high angle conveyor and service elevator.
3.Single flight of 300 m is possible with standard fabric. Much higher single run lifts
are possible with steel cord or aramid fiber belts.
4. A multi-flight high angle conveyor system has no depth limit as additional flights can
be added.
5.The use of all conventional conveyor components permits high conveying speeds.
Available belts and hardware up to 3000 mm wide make capacities greater than 4000
t/h.
4. High Angle Conveyor system suffers no loss of capacity with increasing shaft depth.
5. High Angle Conveyor system exhibits high availability and very low maintenance
costs.
6. The economic advantage of continuous haulage with High Angle Conveyors
increases dramatically with increased volumetric rate.
7. Belts are easily cleaned and quickly repaired
8. Spillage free operation
7. Permits multi-level operation if ore is delivered to various High Angle Conveyor
flights.
ADVANTAGES OF HIGH ANGLE CONVEYOR SYSTEM OVER SKIP FOR VERTICAL
TRANSPORT
S.K.BAG

41. THANK YOU
S.K.BAG