1. PRESENTATION BY PREM PRAKASH
Overview Of Blast Furnace Process
BHEL ISG,Bangalore
Date : 15th july, 2014
PRESENTATION BY PREM PRAKASH
ENGINEER, BG IIA

2. PRESENTATION BY PREM PRAKASH

3. PRESENTATION BY PREM PRAKASH
Blast Furnace Process
PRESENTATION BY PREM PRAKASH

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17. BLAST FURNACES at Tata Steel
PRESENTATION BY PREM PRAKASH

18. PRESENTATION BY PREM PRAKASH
A-G Blast Furnaces
Furnaces
Working Volume (m3)
Inner Volume(m3) A
956
1066 B
674
742 E
595
650 C
646
719 D
1012
1133 F
1585
1816 G
2306
2646
PRESENTATION BY PREM PRAKASH

19. Hot Metal Production Furnaces Inner Volume (m3) TPD
Productivity (t/m3/day)
FY’07 (t) A
1066
1500
1.41
518,970 B
742
1100
1.48
396,500 E
650
2.30
266,430 C
719
1.53
397,350 D
1133
1900
1.68
630,800 F
1816
4000
2.20
1,332,500 G
2646
6000
2.27
2,004,850
TOTAL
8772
17100
1.95
5,547,400
PRESENTATION BY PREM PRAKASH

20. Facilities at Blast Furnaces
Top Charging
Stock House
High Top pressure
Screening
Cast House A
Double bell
Larry car No
Coke
ND & D trough B
Drainable E
Bell less top
0.5 bar C D
ND & D trough+ SG F
Conveyor
0.83 bar
Coke, Ore & Sinter
Drainable+ SG G
1.5 bar
Coke ,Ore & Sinter
PRESENTATION BY PREM PRAKASH

21. Blowing parameters at Blast Furnaces
Fces.
Wind Vol (Nm3/hr)
Oxygen enrichment (%)
Hot Blast Temp. (oC)
Coke rate (Kg/thm)
Coal/Tar rate (Kg/thm)
Charge A
67000
3.5
1050
535 45
Sinter 65% B
55000
1000 E
60000
5.7
1100
485 50 C
1070
570
Sinter % D
70000
6.0
1040
470 95
Sinter 70% F
152000
6.7
1020
434
112 G
240000
1150
430
140
PRESENTATION BY PREM PRAKASH

22. PRESENTATION BY PREM PRAKASH
The Up gradation at A-F Blast Furnaces
Furnace
Working Volume (Existing)
Inner Volume (existing)
Working Volume (New)
Inner Volume ( New) A
956
1066
1350
1553 B
674
742
700
805 E
595
650
684 C
646
719
929
1061 D
1012
1133 F
1585
1816
1823
5468
6126
6092
6975
PRESENTATION BY PREM PRAKASH

23. Pressure at blast furnace end ( bar g)
Up graded Blowing Parameters
FCE.
Tgp ( bar g)
Diff pressure
hot blast press ( bar g)
Press. Drop in stoves
Pressure at blast furnace end ( bar g) A
0.5
1.7
2.2
0.2
2.4 B E C D F 1
2.7
2.9
PRESENTATION BY PREM PRAKASH

24. PRESENTATION BY PREM PRAKASH
Planned Production Rate
Planned
Existing
Furnace
Prodn
MTPA A
1500
0.548 B
1100
0.402 E C D
1900
0.694 F
4000
1.460
11100
4.052
Furnace
TPD
MTPA A
3100
1.095 B
1500
0.54 E C
2000
0.72 D
2100
0.84 F
4100
1.56
TOTAL
14100
5.15
PRESENTATION BY PREM PRAKASH

25. F, G & H Blast Furnace Changes F BF G BF H BF Inner Volume( m3) 1816
2646
3814
Designed Production (MTPA)
1.0
1.8
2.5
Expected Production (MTPA)
1.4
2.2
3.0
No of tap holes & Tuyeres
2 / 24
2 / 30
4 / 34
High Top Pressure (bar)
0.83
1.50
2.50
Slag Granulation system
Natural filter
Bottom Filter
INBA
Stoves
Internal combustion
External combustion
Stock house
Conveyor & Skip
All conveyor
Cooling elements
Cooling plates and hearth spray
Copper and cast iron staves
Copper and Cast iron staves
PRESENTATION BY PREM PRAKASH

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