Raw Materials Handling Plant
The Raw Materials Handling Plant prepares blend mix for Sinter Plant and also supplies raw material lumps to Blast Furnaces and Steel Melting Shop. It has 3 nos. tipplers and 3 nos. blender-cum-reclaimers.
Coke Ovens & Coal Chemicals
|No of batteries||6|
|No. of ovens per battery||78|
|Height of battery||4.45 meter|
The Coke Ovens convert coking coal into coke, which is an input for Blast Furnaces. The Coke Ovens and Coal Chemicals zone is divided into four basic sections namely coal preparation plant, coal carbonization plant, coke handling plant and coal chemicals. The Blast Furnace grade coke produced in Coke Ovens is directly used in Blast Furnaces while the undersized coke is used for sinter making. The volatile matters, which emanate during the process of coke making subsequently produce a variety of by-products like naphthalene oil, heavy creosote oil, light oil, crude tar partially distilled, ‘Raja’ brand fertilizer, nitration grade benzene, nitration grade toluene, industrial grade toluene, light solvent naphtha etc. The Coke Oven gas is generally used in combination with the Blast Furnace gas and BOF gas as fuel and is carried through pipelines to different areas of the plant. The adjoining Alloy Steels Plant under SAIL also gets this fuel gas from DSP.
The Sinter Plant coverts blend mix into sinter – an agglomerated input for Blast Furnaces. In order to enhance the productivity of the blast furnaces, a high percentage of sinter charge is a prerequisite. Sinter is an agglomeration of iron ore fines, coke and limestone in the form of cakes. DSP has three sinter machines: 2 nos. with sintering area of 142.8 sq. meter each and 1 no. with sintering area of 180 sq. meter.
The Blast Furnaces produce liquid hot metal, which is an input for Steel Melting Shop. The details of three nos. of Blast Furnaces are as follows:
|BF No. 2||BF No. 3||BF No. 4|
|Capacity (t/day)||1, 820||1, 820||2, 340|
|Useful volume (cum)||1, 400||1, 400||1, 800|
The BF Slag (granulated) is sold to the cement manufacturing companies.
Steel Melting Shop
The Steel Melting Shop converts hot metal into liquid steel, which is primarily processed through Continuous Casting Plant. The Steel Melting Shop (SMS) has 3 nos. 130 T Basic Oxygen Furnaces (Converters), 1 no. of 130T Vacuum Arc Degassing (VAD) unit, 3 nos. of 130T Ladle Furnaces, 2 nos. Billet Casters, 1 no. Bloom Caster and 1 no. Bloom-Cum-Round Caster.
The Merchant Mill produces Earthquake Resistant (EQR) Thermo Mechanically Treated (TMT) bars of different sizes, which are used for construction and infrastructure development. Its annual production capacity is 2,80,000 Tonnes.
The Section Mill rolls out light and medium structural like joists, channels and angles, which is also used for construction and infrastructure development. Its annual production capacity is 2, 07,000 Tonnes.
Wheel & Axle Plant
The Wheel & Axle Plant produces forged wheels and axle for Indian Railways. DSP is the only producer of forged wheels in the country. Its annual capacity is 58,000 Tonnes
Medium Structural Mill
A new Medium Structural Mill (MSM) of 1.0 Million Tonne capacity is being commissioned in DSP. The medium structural to be produced in the mill will be used in construction and infrastructure development sectors.
Durgapur Steel Plant has a number of captive engineering shops for repairs and supply of spare parts. The Central Engineering Maintenance has a Machine Shop, Structural Shop, Fitting and Assembly Shops. The Foundry produces Ingot moulds and bottom plates for the Steel Melting Shop. There are also Auxiliary Repair Shops such as Electrical, Wagon and Loco Repair Shops.
Research and Control Laboratory
The Research & Control Laboratory is well equipped for carrying out sophisticated chemical, metallurgical and other tests both for better process control and improved quality of products.