Bokaro Steel Plant
|Traded as||NSE: SAIL|
|Headquarters||Bokaro, Jharkhand, India|
|Products||Hot Rolled & Cold Rolled|
Bokaro Steel Plant (BSL) is located in the Bokaro district of Jharkhand. It is the fourth integrated public sector steel plant in India built with Soviet help. It was incorporated as a limited company in 1964. It was later merged with the state-owned Steel Authority of India Limited (SAIL).
Currently it houses five blast furnaces with a total capacity to produce 4.5 MT of liquid steel. The plant is undergoing a mass modernisation drive after which its output capacity is expected to cross 10 MT. The first shop of Bokaro Steel Plant got the ISO 9001 certification away back in 1994, and its SAIL JYOTI products enjoy a loyal market.
Bokaro Steel Plant, the fourth integrated plant in the Public Sector, started taking shape in 1965 in collaboration with the Soviet Union. It was originally incorporated as a limited company on 29 January 1964, and was later merged with SAIL, first as a subsidiary and then as a unit, through the Public Sector Iron & Steel Companies (Restructuring & Miscellaneous Provisions) Act 1978. The construction work started on 6 April 1968.
The Plant is hailed as the country’s first Swadeshi steel plant, built with maximum indigenous content in terms of equipment, material and know-how. Its first Blast Furnace started on 2 October 1972 and the first phase of 1.7 MT ingot steel was completed on 26 February 1978 with the commissioning of the third Blast Furnace. All units of 4 MT stage have already been commissioned and the 90s' modernisation has further upgraded this to 4.5 MT of liquid steel.
The new features added in modernisation of SMS-II include two twin-strand slab casters along with a Steel Refining Unit. The Steel Refining Unit was inaugurated on 19 September 1997 and the Continuous Casting Machine on 25 April 1998.
Bokaro is an Integrated Steel Plant, housing many virtual enterprises within Bokaro Steel. Some 9 MT of different raw materials viz. Iron ore fines and lumps, Limestone (BFand SMS grade), Dolomite lumps and chips, hard Coal and Manganese ore are handled here every year.
The Coke Oven battery has 8 batteries with 69 ovens each, maintained meticulously in terms of fugitive emission control, use of phenolic water and other pollution control measures.
Bokaro has five 2000-cubic metre Blast Furnaces that produce molten iron - Hot Metal - for steel making. Bell-less Top Charging, modernised double Cast Houses, Coal Dust Injection and Cast House Slag Granulation technologies have been deployed in the furnaces.
Bokaro has two Steel Melting Shops - SMS-I and SMS-II. SMS-I has 5 LD converters of 130T capacity each. It is capable of producing Rimming steel through the ingot route. SMS-II has 2 LD converters, each of 300 T capacity, with suppressed combustion system and Continuous Casting facility. It produces various Killed and Semi-Killed steels.
The Continuous Casting Shop has two double-strand slab casting machines, producing high quality slabs of width ranging from 950 mm to 1850 mm. CCS has a Ladle Furnace and a Ladle Rinsing Station for secondary refining of the steel.CCS produces steel of Drawing, Deep Drawing, Extra Deep Drawing, Boiler and Tin Plate quality. It also produces low alloy steels like LPG, WTCR, SAILCOR and API Grade.
Slabbing Mill transforms ingots into slabs by rolling them in its 1250 mm Universal Four-High Mill. The rolling capacity of the Mill is 4 MT per annum. The shop has Hot and Cold Scarfing Machines and 2800 T Shearing Machine.
Slabs from Continuous Casting Shop and Slabbing Mill are processed in the state-of-the-art Hot Strip Mill. The fully automatic Hot Strip Mill with an annual capacity of 3.363 million tonnes has a wide range of products - thickness varying from 1.2 mm to 20 mm and width from 750 mm to 1850 mm.
The Hot Rolled Coil Finishing shop has two shearing lines with capacities of 6,45,000 Tonnes/ year and 4,75,000 Tonnes/ year respectively.
The Cold Rolling Mill at Bokaro uses state-of-the-art technology to produce high quality sheet gauge material, Tin Mill Black Plate and Galvanized Products. The Hot Dip Galvanizing Complex integrated with the CRM produces zinc-coated Cold Rolled strips resistant to atmospheric, liquid and soil corrosion.
Bokaro Steel has a vast networked of railway tracks and over 40 diesel locos to smoothly run its operations. The Oxygen Plant provides Oxygen, Nitrogen and Argon for processes like steel making and annealing. Water Management looks after the huge water requirements of the plant and the township, providing different grades of water and taking care of recycling needs.
Bokaro Steel Plant is designed to produce a wide range of flat products:
- Hot rolled coils
- Hot rolled plates
- Hot rolled sheets
- Cold rolled coils(CRM)
- Cold rolled sheets
- Tin mill black plates (tmbp)
- Galvanised plain and corrugated (gp/gc) sheets
- Oxygen Gas Produced in Oxygen Plant.
- Hydrogen Gas
- Coke Oven byproducts
- Nirmal Sengupta (1 May 1979). Destitutes and Development: A Study of the Bauri Community in the Bokaro Region. Concept Publishing Company. pp. 25–. GGKEY:73SPC2220UQ. Retrieved 19 October 2012.
- Steel Authority Of India Limited
- Sutinder Bhatia (1 January 1991). Bokaro steel plant: some economic aspects. Popular Prakashan. ISBN 978-81-7154-540-7.
- Padma Desai (1972). The Bokaro steel plant: a study of Soviet economic assistance. North-Holland Pub. Co. ISBN 978-0-444-10388-8.