Chp

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

SINGARENI COLLIERIES POLYTECHNIC COLLEGE

Technical seminar on

COAL SCREENING PLANT [C.S.P.]

PLACES VISITEDPLACES VISITED

OC MINESOC MINES STPP(Singareni Thermal Power STPP(Singareni Thermal Power

Plant),JaipurPlant),Jaipur Area workshop(SRP)Area workshop(SRP) CSP(Coal Screening Plant),RK-5CSP(Coal Screening Plant),RK-5

2

The purpose of the Coal handling plant is to Process raw coal and dispatch it to customers for further processing.

Coal is received from mines in the form of lumps of varying sizes, by means of trucks.

Coal is conveyed by means of conveyor Belts in the coal handling plant.

Coal is then supplied to the crusher house through Vibrating screens to sieve the coal before feeding to the crusher; 20% of the coal that is received is already <300mm size so this is separated & only larger lumps are fed to the Crusher.

The crushed coal is fed to the conveyors in the crusher house through Belt. when the bunkers are full, coal is stocked in nearby area, and they are reclaimed as and when required.

The stacking is done to insulate the plant against the discontinuous dispatch of coal.

Now the coal is loaded into the wagons by using a

pre-weigh surge hopper.

04/21/23 12:21 PM COAL HANDLING SYSTEM 6

Conveyor layout

Coal size -<300mm

Coal size ->300mm

Belt conveyor C6 Belt conveyor C6

Wagons

Vibrating feedersVibrating feeders

Crusher

Conveyors C2 & C3Conveyors C2 & C3

Stock pileStock pileConveyors C4 & C5

Conveyors C4 & C5

Ground Level Bunker

Ground Level Bunker

Trucks (ROM coal)Trucks (ROM coal) ROM BunkerROM Bunker

Reciprocating and vibrating feeders

Reciprocating and vibrating feeders

Screens(300mm)Screens(300mm)

Belt conveyor ( ROM1 & ROM2)

Belt conveyor ( ROM1 & ROM2)

Direct feeding through C1 Conveyor

Conveyors RC1 & RC2Conveyors RC1 & RC2

Conveyor SL1 and SL2

Conveyor SL1 and SL2

SLACK BUNKERSLACK

BUNKERConveyor

C1Conveyor

C1

Belt conveyor C7 Belt conveyor C7

Coal size -<300mm

Pre- Weigh

Surge Hopper

Pre- Weigh

Surge Hopper

Shale 1 conveyorShale 1

conveyorShale

2Shale

2

Shale BunkerShale

Bunker

Coal size -<300mm

CONVEYOR ROM1 & 2: Coal is unloaded by trucks into ROM bunkers, from which coal is fed to Conveyors ROM1 & 2, by means of vibrators.Vibrators are used to ensure smooth flow of coal.

S.N0 SPECIFICATION ROM1 ROM2

1 Gearbox make Rampur APHMEL

2 Gear Ratio 20:1 40:1

3 Belt width 1200mm 1200mm

4 Belt length 205m 205m

5 Centre to Centre 97m 97m

6 Belt speed 2.5m/s 1.4m/s

7 Belt capacity 750 Tph 750 Tph

8 Belt lift 11.2m 11.2m

S.N0 SPECIFICATION ROM1 ROM2

1 Motor make BB NGEF

2 Motor RPM 1490 1490

3 Power 75Hp 75Hp

4 Voltage 440V 440V

5 Current 101A 101A

Coal from ROM1 and ROM 2 are passed through vibrating screens on to the conveyors RC1 and RC2 respectively.

Vibrating screens filter the coal size less than 300mm onto the Slack 1 & 2 conveyors respectively.

This way load on the crusher can be minimized.

S.N0 SPECIFICATION SCREENS 1 &2

1 Make Tata Robins Fraser Ltd

2 Size 60” x 160”

3 Stroke ½ “

4 Screening 4”

5 Capacity 300 Tph

6 Motor 20Hp

S.N0 SPECIFICATION RC1 RC2

1 Gearbox make Shanti-14” Shanti-14”








S.N0 SPECIFICATION RC1 RC2

1 Motor make NGEF CG

2 Motor RPM 1479 1460

3 Power 40Hp 40Hp

4 Voltage 440V 440V

5 Current 52A 52A

Coal which is filtered through screens is passed onto conveyors C2 & C3 by means of conveyors SL1 & SL2 respectively.

If supply of coal is directly of size less than 300mm then its is fed to conveyors C2 & C3 by means of C1 conveyor.

Coal on C1 conveyor is fed through vibrators of Slack coal bunker.

S.N0 SPECIFICATION SL1 SL2 C1

1 Gearbox make Elecon APHMEL Elecon

2 Gear Ratio 30:1 30:1 30:1

3 Belt width 1000mm 1000mm 1200mm

4 Belt length 125m 125m 150m

5 Centre to Centre 59m 58m 70m

6 Belt speed 1.60m/s 1.60m/s 2.60m/s

7 Belt capacity 150 Tph 150 Tph 1200

8 Belt lift 1.0m 0.4m 7.0m

S.N0 SPECIFICATION SL1 SL2 C1

1 Motor make KE GEC CG

2 Motor RPM 1440 1440 1440

3 Power 40Hp 40Hp 75

4 Voltage 440V 440V 440V

5 Current 55A 55A 101A

While coal is passing on conveyors RC1, RC2, SL1 & SL2 shale is passed onto Shale1 conveyor.

Now Shale is conveyed onto Shale 2 Conveyor and it is dumped in the Shale bunker.

S.N0 SPECIFICATION SHALE1 SHALE2

1 Gearbox make Elecon Elecon







8 Belt lift LEVEL 11.0m

S.N0 SPECIFICATION Shale1 Shale2

1 Motor make KE CG

2 Motor RPM 1460 955

3 Power 15Hp 15Hp

4 Voltage 440V 440V

5 Current 21A 23A

Coal from conveyors RC1 & RC2 is passed through crushers and then fed to conveyor C2 & C3.

Coal from conveyors SL1 and SL2 also feed conveyor C2 & C3.

Coal from C1 conveyor also feeds C2 and C3.

C2 and C3 feed conveyor C4 & C5 which dump the coal into GL bunkers.

COAL HANDLING SYSTEM 21

S.N0 SPECIFICATION C2 C3 C4 C5

1 Gearbox make Hu wood Hu wood Elecon Greaves

2 Gear Ratio 3.97:1 3.91:1 20:1 20:1

3 Belt width 1200mm 1200mm 1400mm 1400mm

4 Belt length 200m 200m 70m 40m

5 Centre to Centre 90m 90m 34m 17m

6 Belt speed 2.60m/s 2.60m/s 2.64m/s 2.64m/s

7 Belt capacity 1200 Tph 1200 Tph 1000 Tph 1000 Tph

8 Belt lift 12.0m 12.0m LEVEL LEVEL

S.N0 SPECIFICATION C2 C3 C4 C5

1 Motor make Alstom CG CG KE

2 Motor RPM 1485 1476 1440 1440

3 Power 125kW 125kW 40Hp 40Hp

4 Voltage 3.3kV 3.3kV 440V 440V

5 Current 28.5A 30A 52A 52A

S.N0 SPECIFICATION CRUSHERS 1 &2

1 Make Sayaji iron engg

2 Crushing size 200mm-50mm

3 Capacity 200 Tph

4 Motor 100Hp

Coal from GL bunkers is fed to conveyor C6

Coal is now transferred to C7 conveyor.

From C7 conveyor coal is dumped into Surge hopper.

COAL HANDLING SYSTEM 26

S.N0 SPECIFICATION C6 C7

1 Gearbox make APHMEL APHMEL








S.N0 SPECIFICATION C6 C7

1 Motor make KE Alstom

2 Motor RPM 1476 1485

3 Power 2 X 200 kW 125kW

4 Voltage 3.3kV 3.3kV

5 Current 44A 29A

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