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JINDAL STEEL AND POWER
This plant was built few years back.
The company have invested US $ 6 billion (36,200 crores INR) in
the state of Odisha for steel production and power generation.
The proposed steel plant to be set up in Odisha will produce 12.5
MTPA (million metric tonnes per annum) steel and generate 2600
MW of power in phases.
In the first phase, the company is setting up a 6 MTPA integrated
steel plant at Angul.
A 2.5 MTPA steel melting shop (SMS) has been commissioned.
The project is in a fast-track mode, with the 1.5 MTPA plate
mill and an 810 MW captive power plant already
The plate mill is capable of producing 5 meter wide plates,
making it the widest to be ever produced in the country.
The major facilities at the plant include:
Coke oven and by-product plant
Coal gasification plant
DRI plant and blast furnace
Steel melting shop
Lime and dolomite plant
The DRI-BF-EAF route technology would be adopted for steel
The DRI (Direct reduced iron) plant has a unique feature
of using syn gas from the coal gasification plants as
It is being used for the first time in the world and has the
advantage of using high ash coal which is predominantly
available in the vicinity of the project site.
The company has signed an agreement with Lurgi Technology
Company- South Africa, for providing technology for coal
Direct-reduced iron (DRI), also called sponge iron.
It is produced from direct reduction of iron ore (in the
form of lumps, pellets or fines) by a reducing gas
produced from natural gas or coal.
The reducing gas is a mixture, the majority of which
is hydrogen (H2) and carbon monoxide (CO) which act as
This process of reducing the iron ore in solid form by
reducing gases is called direct reduction.
Higher grade of steel
Steel melting shop
(SMS) Steel is made in steel melting shop in the refractory lined vessels called LD
Converters by blowing oxygen through the hot metal bath.
While iron making is a reduction process, steel making is an oxidation
The oxygen reacts with the carbon in the hot metal and this reaction
releases large quantities of gas rich in carbon monoxide along with huge
amount of dust.
The gases released from the converter are collected, cooled, cleaned and
recovered for use as fuel in the steel plant.
The entire molten steel is continuously cast at the radial type continuous
casting machines resulting in significant energy conservation and better
Steel manufacturing process:-
Untreated ore cannot be used to make steel as it reduces the quality of the
Therefore, the raw iron ore is processed at the DRI plant (or processed iron
The coal used in the plant is cleansed of impurities in coke ovens.
Conveyor belts carry metallics — pellets and sinters — The the heart of the
steel plant, the blast furnace.
The blast furnace is a six-storey tall reactor where heating of dark iron ore into
glowing hot liquid iron takes place.
The ore is charged into the blast furnace along with
fluxes and limestone.
Temperatures in the blast furnace reach up to 1,500*C
and the resulting metallurgical reaction converts iron
oxide into molten iron.
The blast furnace works round the clock.
Liquid steel being tapped into a ladle car
The red hot liquid metal produced in the blast furnace
is collected in the hearth and ‘tapped’ on a near
continuous basis through day and night.
The process is called casting.
Molten iron being poured into the
Hot metal or molten iron from the blast furnace is
transferred into vessels called torpedoes and transported
on rail tracks to the LD, or Linz Donawitz.
Here the molten iron is refined into steel using the
‘basic oxygen furnace’method.
At the LD shop the process begins with charging scrap
into the furnace, where temperatures reach 1,700°C.
Large ladles, capable of holding 170 tonnes of liquid
metal, pour the molten iron into the furnace.
A water-cooled lance is lowered into the furnace to blow
in pure oxygen.
Furnace (Bottom view)
THERMISTORS ARE USED TO MEASURE THE TEMPERATURE
Iron ore (as coolant) and burnt lime and raw dolomite (as flux) are added from
The oxygen removes carbon, silicon , sulphur and phosphorus content from
molten iron and converts it to steel, an alloy that is tougher than iron.
One ‘heat’ (a cycle of steelmaking) takes 45-50nminutes and produces an
average of 250 tonnes of molten steel.
This steel goes through further refining, depending on requirement, at the
online purging station, ladle furnace station or RH degasser.
Ladles with a holding capacity of 160 tonnes carry the liquid steel to the
continuous caster machines.
Here the liquid steel finally takes solid form and is shaped into what are called
long products or flat products.
The continuous slab caster,
from which emerge flat-steel products.
PROXIMITY SENSOR TEMPERATURE DETECTING SENSOR
Environment Protection Measures
The company is very much concerned about the impact on
environment and has therefore taken adequate measures and adopted
the best pollution control norms available in the world.
One of the major steps taken towards protecting the environment
and reducing soil degradation is the usage of fly ash bricks in place of
conventionally used red bricks in all construction activities at the