Formation of Scaffold in Blast Furnace Shaft The term scaffold is used when there is accretion or scab formation on the blast furnace (BF) wall which causes a decrease in the cross sectional area of the shaft of the BF. Scaffold can occur relatively at the higher level of the BF shaft or relatively low …
Read MoreEffect of Alkalis on Ironmaking Process in a Blast Furnace One of the main objectives during the operation of a blast furnace (BF) is to maximize the production of hot metal (HM) of the desired chemical composition at the minimum costs. This needs a high quality of a raw material base and a regular, smooth …
Read MoreSteel Cleanliness and Clean Steel Technologies Steel cleanliness is an important factor which decides the quality of the steel. It can have a remarkable influence on steel properties, such as tensile strength, formability, toughness, weldability, cracking-resistance, corrosion resistance, and fatigue-resistance etc. The demand for better mechanical properties of steels from the steel consumers has urged …
Read MoreElectroslag Remelting Process Electroslag remelting (ESR) is the abbreviated name given to electroslag consumable electrode remelting and secondary refining process. It is a secondary steelmaking process which is used for remelting and refining of steels and special alloys normally used for critical applications in aircraft, thermal and nuclear power plants, and defence hardware, etc. The …
Read MoreProduction and Processing of Armour Steel In the present day environment, there are accelerated efforts to deliver lightweight armour technologies which can defeat armour-piercing (AP) projectiles at reduced areal weights. While many of these efforts involve the application of lower density metals such as aluminum and titanium, the selection of steel alloys continues to be …
Read MoreTempcore process for the Production of TMT Reinforcement bars Tempcore process for the production of reinforcement bar (rebar) is a patented process in which the hot rolled bar is intensively surface quenched by water, immediately as the bar emerges from the last hot rolling stand of the rolling mill and during the subsequent air cooling …
Read MoreProduction processes for Welded Pipes Steel pipes are long, hollow tubes which are used mainly to convey fluid or fluidized products from one location to another. They are produced mainly by two distinct production processes which result in either a welded pipe or a seamless pipe. Welded steel pipes are produced with either a longitudinal seam or a …
Read MoreCoal Gasification based Production of Direct Reduced Iron Direct reduced iron (DRI) is one of the major input materials for the production of steel through electric furnace route. DRI is produced predominantly by gas based processes around the world in vertical shaft furnaces utilizing natural gas. DRI is also used in some countries by rotary …
Read MoreWaste Heat Recovery Technologies Waste heat is the energy which is associated with waste streams of air, exhaust gases, and/or process products which leave a process and enter the atmosphere. It is the energy which is generated in various processes and which is not put into any practical use and is lost or wasted into …
Read MoreFuel Combustion and Heat Transfer in a Furnace Heat is needed in a furnace for heating of the furnace charge (material to be heated in the furnace) and sometimes for the chemical reactions. The three sources of heat energy are (i) combustion of fuels, (ii) electric energy, and (iii) chemical energy available through the exothermic …
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