Mobarakeh Steel Company发表评论(0)编辑词条

Mobarakeh Steel Company (MSC, Persian: فولاد مبارکه , Foolad Mobarakeh) is an Iranian steel company, located 65 km south west of Esfahan, near the city of Mobarakeh, Esfahan Province, Iran. It is Iran's largest steel maker, and one of the largest industrial complexes operating in Iran. It was first commissioned after the Iranian Revolution in 1979 and officially initiated operations during 1993. Underwent major revamping during year 2000, and is presently schedule for a second and third revamping, due in 2009 - 2010, bringing the total steel output to 7,200,000 metric tons per year. The company owns the successful football club, Sepahan F.C.

http://www.mobarakeh-steel.ir

MSC’s iron ore (raw material) comes from mines in Golgohar and Chadermaloo (Kerman and Yazd provinces) and are converted to pellets in the Pelletizing Plant (diameters: 8-10 mm). After being reduced in the Direct Reduction (DR) Plant and removed of oxygen, pellets are converted to (sponge iron). Sponge iron and iron scrap is melted in electric arc furnaces, after which liquid steel is purified in secondary purification units. The steel's chemical compound is designed by customer demand. Then, it's transported to casting machines for slab production. After cooling, slab is rolled at the Hot Rolling mill, creating hot coils (thickness: 1.5-16mm). Some are sold; other go to the Hot finishing mill for complementary work and hot sheet transformation or the cold rolling mill to lower strip thickness to 0.18mm. Coldrolled coils are also dedicated for the Tinning, Galvanizing, and prepainting lines.

The Iron Plant Complex has 10 main production line units (the rest are auxiliary and back up units). Iron ores with large grains from Golgohar are converted by ball mills in the Pelletizing plant. After mixing with Chadermalou's smaller grains and bentonite in blending machines it's changed to pellets (diameter: 6-25 mm) and screened by a two-story roller screen. Pellets solidify in an induration tunnel or furnace at 1280°C. The Lime Production Plant receives limestone from the Hozmahi mine, which is then calcinated in two rotary kilns at 780-1050°C. After screening, calcinated lime may be used in the Lime Plant, consumed in the Palletizing Plant, Briquet Unit or for industrial water production.

At the Direct Reduction plant, pellets are charged in Midrex shaft furnaces after misco-grain screening (less than 5mm). Two reducing gases (derived from cracking natural gas or methane, consisting of Co and H2) are injected into the furnace, combine with oxygen from the pellets resulting in CO2+H2O. Without oxygen, pellets become sponge irons. After screening, sponge irons are transferred to the Steel Plant. Sponge irons with a diameter less than 5 mm go to the briquet unit to produce briquets (diameter above 25 mm). Then, they are transferred to the Steel Plant with the sponge iron.