The document provides information about the steel melting shop (SMS) at Jindal Steel and Power Limited (JSPL) Raigarh plant. The key points are: 1. The SMS has a capacity of 3.2 million tonnes per year and includes 3 electric arc furnaces, a ladle refining furnace, and vacuum degassing units. 2. The melting process involves charging raw materials into the electric arc furnaces and applying electrical energy to melt them. Secondary refining then occurs in the ladle refining furnace and vacuum degassing units. 3. Final products are continuously cast into blooms, billets, rounds and other sections using various casters like the

1. STEEL MELTING SHOP-3
Submitted by:-
Mukul Dev Khunte
Rahul Kumar Singh
Kuldeep Patel
Navratan Bhoy

2. Contents
⬜ About JSPL
⬜ Steel Melting Shop
◼ Introduction
◼ About Steel
◼ Steel Making Processes
◼ Electric Arc Furnace
◼ Melting
◼ Secondary Refining
◼ Casting
◼ Finished Products of SMS
⬜ Conclusion

3. JSPL Raigarh

4. About JSPL
1. Jindal Steel & Power Limited (JSPL) is the
youngest fleet under the flagship of JINDAL
Organization.
2. JSPL has the largest coal-based sponge iron
manufacturing capability in the world with
a capacity of producing 1.32 MTPA DRI.
3. India's first state of the art plate mill
introducing newer technologies, JSPL has
installed a plate mill.
4. It is the only sponge iron manufacturer in
the country with captive raw material
resources and power generation.

5. Working Units
⬜ DRI Plant - 4 nos. of 500 TPD (0.72 million TPA) and 6
nos. of 300 TPD (0.6 million TPA) rotary kilns
⬜ 0.8 million TPA coke oven plant
⬜ 2.5 million TPA sinter plant
⬜ 1.25 million TPA and 0.65 million TPA Blast Furnace
⬜ 2.0 million TPA and 1.25 million TPA steel melting
shop
⬜ 2 vacuum degassing units
⬜ RH degassing unit
⬜ 1 No. single strand slab caster

6. Working Units
⬜ 1 No. of 6 - strand billet-cum-round caster and 1 No. 6
strand billet caster
⬜ 2 Nos. of 4 - strand combi – caster
⬜ Rail & universal beam mill (RUBM) (0.75 million TPA)
⬜ Plate-cum-coil Mill (1.0 million TPA)
⬜ Submerged arc furnace (SAF) (0.03 million TPA)
⬜ Oxygen plant 37683 Nm3/hr
⬜ Lime and dolomite calcinations plant (0.4165 million
TPA)
⬜ 358 MW captive power plant(CPP)
⬜ 0.7 million TPA Medium & Light Structure mill

7. Steel Melting Shop
The SMS plant of JSPL has a capacity of longest
casting India’s widest section (215×2600mm)
and casting of heaviest section (250× 2600𝑚𝑚).
Steel melting shop has a rated capacity of 3.2
MT / annum.
The SMS complex of JSPl raigarh has 3 Electric
Arc Furnaces, each of 100 T capacity.
Transformer rating of EAF is 100 MVA. The
EAF and EBT type and equipped with 4 lance
mounted on tap shell. These lances are used for
oxygen lancing during melting process in EAF.

8. Steel
From construction industry to house hold
requirement, steel is synonymous with every single
infrastructural development. Steel has a vital role in
the development of every economy. It is an alloy of
iron and carbon having carbon up to 2.11 %. steel is
much better than cast iron having more than 2.11 %
carbon and wrought iron that has 0% carbon. This is
because its mechanical and physical properties are far
better than other alloys. Final properties depend upon
its chemical properties prior to casting. In SMS, the
chemical properties are decided during the secondary
refining stage.

9. Iron Ore Composition
Name Classification Theoretical maximum
iron content (%)"
Haematite Fe2O3 70.0
Magnetite Fe3O4 72.4
Goethite FeO.OH 62.8
Siderite FeCO3 48.3
Taconite & Jaspilite Wide variety of iron-bearing rocks, usually 20 to 40%
(actual).
Contains magnetite or hematite

10. Steel Making Process
⬜ Steel can be produced by any of the
following processes:
⬜ Bassemer Process
⬜ Open Hearth Furnace
⬜ Twin Hearth Furnace
⬜ LD Convertor
⬜ ELECTRIC ARC FURNACE

11. Electric Arc Furnace
⬜ The electric arc furnace route of is the
best and the cheapest cheapest route of
steel making for jspl because:
⬜ JSPL has its own coal mines.
⬜ JSPL has its own in house DRI plant to
manufacture coal based DRI at raigarh.
⬜ JSPL has its in house power plant which
provides sufficient power supply to SMS
and also to the other sections of JSPL
plant.

12. Electric Arc Furnace

13. Melting
⬜ Once the furnace is charged, the melting of the
raw materials begins. This process is heart of
EAF operations. EAF has evolved into a highly
efficient melting apparatus and modern
designs are focused on maximising the
melting capacity of the EAF. Energy supplied
to the furnace is of the following forms:
⬜ Electrical energy
⬜ Chemical energy

14. Secondary Refining
The process takes place in two stages:
1.Refining in LRF.
2.Degassing in VD.

15. Refining in LRF
Steel refining is the first step that takes place in
LRF when tapped steel is brought from EAF. It is
required because all the all impurities are not
removed from the steel during primary refining,
the impurities present in steel are such that some
require reducing atmosphere for removal of
impurities.

16. Refining in LRF
Functions of LRF are as follows :
⬜ Refining of steel
⬜ Achieving desired chemistry
⬜ Desulphurization
⬜ Thermal and chemical homogenization
⬜ Raising desire temperature for casting

17. VACUUM DEGASSER

18. Casting

19. Casting
Continous
Casting
Machine
Combi Caster
Billet Caster

20. Combi Caster
By using combi caster one can produce big
beam blanks, small beam blanks, rail
blooms, blooms and rounds.

21. Billet Caster
The second type of caster used in SMS is the
billet caster. Billet casters produce squares
and rounds.

22. Finished product from
SMS