The steel Melting Shop is designed to produce alloy steels of 2,25,000 TPA through Electric Arc furnace (EAF) 30/35 MT Capacity with Eccentric Bottom Tapping (EBT), Ladle Refining Furnace (LRF)/ Vacuum Degasser (VD) and continuous casting machine supplied by Eastern Metec, Kolkata.
The plant is equipped with following facilities.
Side wall mounted oxygen lance (non consumable water cooled) make ALARC Jet, American Combustion Technology, America in EAF.
Carbon injection material conveying capacity is 40 Kgs/Min (max), Make Macgale Pneumatic, Nagpur.
Gunning machine material conveying capacity is 50 Kgs/Min (Max), Make Velco, Germany.
20 MVA transformer, Make – EMCO
Furnace can be operated with any combination of charge mix but at present the charge mix being used in 80 : 20 ratio i.e. DRI and iron ore. The furnace is equipped with continuous DRI feeding facility supplied by Metec. Ferro alloy feeding system has also been installed to facilitate Ferro alloy addition in ladle during / after tapping from EAF.
Ladle Refining Furnace (LRF) is provided with 6 MVA transformer & Argon rinsing system. The Temperature & chemistry of liquid steel is adjusted in LRF.
In order to make clean steel Vacuum Degassing system is installed. The Vacuum Degasser removes the dissolved gases like hydrogen, Nitrogen, Oxygen etc from the liquid steel. The Vacuum is created by steam ejectors with the help of superheated steam.
The liquid steel is cast into Billets & Blooms of sizes 100x100mm, 110x110mm, 130x130mm, 160x160mm & 200x200 mm through Continuous casting machine. The billets are cut into desired length as per requirement by auto gas cutting machine supplied by China.
The Chemistry of the steel & quality of billets is checked by spectrometer & gas Analyiser. The billets are produced to customers requirement & as per Indian & International standards and to any length.
The Fumes coming-out from EAF, LRF and remaining fugitive gases are collected in a bag house. The fumes are cooled in water cooled ducts and heat exchangers to final temperature not more than 130 Deg C to ensure the safety of equipment and bags. The dust is captured and filtered in the bag house and clean gases are let out from the 45 meter tall chimney. The residual dust concentration is less than the permissible norms.
The slag produced is used for reclaiming low lying areas & as sub base for road making. The iron ore & skull generated internally are reused in EAF.
The steel Melting Shop is designed to produce alloy steels of 2,25,000 TPA through Electric Arc furnace (EAF) 30/35 MT Capacity with Eccentric Bottom Tapping (EBT), Ladle Refining Furnace (LRF)/ Vacuum Degasser (VD) and continuous casting machine supplied by Eastern Metec, Kolkata.
with continuous DRI feeding facility supplied by Metec. Ferro alloy feeding system has also been installed to facilitate Ferro alloy addition in ladle during / after tapping from EAF.
The liquid steel is cast into Billets & Blooms of sizes 100x100mm, 110x110mm, 130x130mm, 160x160mm & 200x200 mm through Continuous casting machine. The billets are cut into desired length as per requirement by auto gas cutting machine supplied by China.
