PRESENTATION ON EASTERN COALFIELD

LIMITED RAJMAHAL AREA

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

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.

GENERAL LAYOUT OF CHP

Wagon Tippler Crusher House

Bunkers

Tripper Trolley

Conv. Belts Vibrating

Screens

Crushers

Feeder Surge

Hopper

Hopper

Fig:Overview of Coal Handling plant

CHP AUXILIARIES

OPERATING CYCLE

Bunkers

From W/T

Bunkering

Belts

Surge Hopper

Vibrating Feeder

Crusher House

Crusher

CONVEYOR BELT SYSTEM

• Construction of Conveyor Belt

• Conveyor Belt Drive System

• Counter Weight

• Idlers

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

CONVEYOR BELT DRIVE SYSTEM

Motor G / B

Fluid Coupling

Filled with 3/4th oil

Fusible plug Head End Pulley

Tail End Pulley

oSpeed before crusher 2.4 m/secoSpeed After Crusher 2.7 m/sec

Belt Speed

COUNTER WEIGHT

Return Idlers

Idlers

Counter Weight

Head End Pulley

Tail End Pulley

Conveyor Belt

Railing

Take-up Pulley

Idlers

Carry Side Return Side

Self Alignment Impact Return Roller Return Adjustment Roller

( Installed after every 25m )

Below Discharge chute( rubber coating )

35°

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

DRCR RBCR Impact

250 mm 80 mm

600 mm

20-25 mmStage 1 Stage 2

Stage 3

DOUBLE ROLL CRUSHER ( DRCR )

Teeth

Roller

300 mm

ROTARY BREAKER CRUSHER

(RBCR)

Hole of diameter 100 mm

250 mm

80 mm

IMPACT CRUSHER

Hammer

30 mm

Rotor

Coal

BIBLIOGRAPHY