This document provides an overview of the coal handling plant (CHP) at the Rajmahal area of Eastern Coalfields Limited in India. It discusses the general layout of the CHP including wagon tipplers, bunkers, conveyor belts, screens, crushers and hoppers. It also describes the operating cycle and crushing mechanisms used including double roll crushers, rotary breaker crushers, and impact crushers to crush coal from 600mm to 20-25mm.

1. PRESENTATION ON EASTERN COALFIELD
LIMITED RAJMAHAL AREA

2. CONTENT
• ABOUT E.C.L RAJMAHAL AREA
• GENERAL LAYOUT OF COAL HANDLING
PLANT(CHP)
• CHP AXUILARIES
• OPERATING CYCLE
• CONVEYOR BELT SYSTEM
• CRUSHING MECHANISM IN CHP
• BIBLIOGRAPHY

3. ABOUT E.C.L RAJMAHAL AREA
 Eastern Coalfields Limited (ECL) is a coal producer
based in India.
 The company came into existence in 1975
after nationalization of coal mines in India.
 The company has its headquarters at
Sanctoria,Asansol in West bengal.
 This Mine is totally linked to Farakka and
Kahalgaon NTPC.
 Last financial year production of coal is 36.05 MT.

5. GENERAL LAYOUT OF CHP
Wagon Tippler Crusher House
Bunkers
Feeder Surge
Hopper
Conv. Belts Vibrating
Tripper Trolley
Screens
Crushers
Hopper

6. Fig:Overview of Coal Handling plant

7. CHP AUXILIARIES

8. OPERATING CYCLE
Bunkers
From W/T
Bunkering
Belts
Surge Hopper
Vibrating Feeder
Crusher House
Crusher

9. CONVEYOR BELT SYSTEM
• Construction of Conveyor Belt
• Conveyor Belt Drive System
• Counter Weight
• Idlers

10. CONSTRUCTION OF CONVEYOR
BELT
• Synthetic rubber.
• 4 ply means 4 nylon net in between 2 mm
thick rubber coating is used.
• Width varies from 500 mm -1400 mm.
Net
Strength = 600 N
1000 mm

11. CONVEYOR BELT DRIVE SYSTEM
Fusible plug Head End Pulley
Motor G / B
Fluid Coupling
Filled with 3/4th oil
Tail End Pulley
Belt Speed
oSpeed before crusher 2.4 m/sec
oSpeed After Crusher 2.7 m/sec

12. COUNTER WEIGHT
Return Idlers
Idlers
Counter Weight
Head End Pulley
Tail End Pulley
Conveyor Belt
Railing
Take-up Pulley

13. Idlers
Carry Side Return Side
Self Alignment Impact Return Roller Return Adjustment Roller
( Installed after
every 25m )
Below Discharge
chute
( rubber coating )
35°

14. CRUSHING MECHANISM IN CHP
• Three Stage Crushing System is used in Plant.
– 1.Double Roll Crusher
– 2.Rotary Breaker Crusher
– 3.Impact Crusher
W / T No.4
600 mm
DRCR RBCR Impact
250 mm 80 mm
20-25 mm
Stage 1 Stage 2
Stage 3

15. DOUBLE ROLL CRUSHER ( DRCR )
Roller
Teeth
300 mm

16. ROTARY BREAKER CRUSHER
(RBCR)
Hole of diameter 100 mm
250 mm
80 mm

17. IMPACT CRUSHER
Hammer
30 mm
Rotor
Coal

18. BIBLIOGRAPHY