INSTITUTE OF TECHNOLOGY (IOT)
DEPARTMENT OF METALLURGICAL ENGINEERING
TOPIC:
DESCRIBE THE CONVERTER USE IN MAKING D.R.I STEEL MAKING
GROUP 1
MATRIC NUMBERS
1. ND/12/MET/FT/023
2. ND/12/MET/FT/013
3. ND/12/MET/FT/011
4. ND/12/MET/FT/012
5. ND/12/MET/FT/060
6. ND/12/MET/FT/096
7. ND/12/MET/FT/094
8. ND/12/MET/FT/028
9. ND/12/MET/FT/142
10. ND/12/MET/FT/089
11. ND/12/MET/FT/009
12. ND/12/MET/FT/039
13. ND/12/MET/FT/143
14. ND/12/MET/FT/010
15. ND/12/MET/FT/078
16. ND/12/MET/FT/070
Steelmaking is the process for producing steel from iron and ferrous scrap. In steelmaking, impurities such as nitrogen, silicon, phosphorus, and excess carbon are removed from the raw iron, and alloying elements such as manganese, nickel, chromium and vanadium are added to produce different grades of steel. Limiting dissolved gases such as nitrogen and oxygen, and entrained impurities (termed "inclusions") in the steel is also important to ensure the quality of the products cast from the liquid steel.[1] There are two major processes for making steel, namely basic oxygen steelmaking which has liquid pig-iron from the blast furnace and scrap steel as the main feed materials, and electric arc furnace (EAF) steelmaking which uses scrap steel or direct reduced iron (DRI) as the main feed materials. Oxygen steelmaking is fuelled predominantly by the exothermic nature of the reactions inside the vessel where as in EAF steelmaking, electrical energy is used to melt the solid scrap and/or DRI materials. In recent times, EAF steelmaking technology has evolved closer to oxygen steelmaking as more chemical energy is introduced into the process.
Direct-reduced iron (DRI), also called sponge iron, 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