Aluminum may be added to the furnace, ladle, Ladle Furnace, caster tundish or ingot mold. Each type of addition has its specific purpose, and each will produce characteristic results. Aluminum is a very powerful deoxidizer but poses problem because of its low density and lower melting point. It has been estimated that the density of liquid aluminum at steelmaking temperatures (1600°C) is only about 2 g/cm3. Steel’s density at this temperature is greater than 7 g/cm3, depending on composition. Therefore, when aluminum is added to the bath, it will float at the steel/slag interface, where it quickly oxidizes. Relatively small amounts actually make contact with the steel. The recovery of Al by pellet/ shot addition is therefore low and erratic as its loss by burning in atmosphere is high and unpredictable.
Aluminum Wire Rods
Wire feeding has overcome this disadvantage by force feeding the aluminum deep into the bath. The aluminum wire is introduced in to ladle from top through slag at a speed ranging from 100-300 meters/minute depending upon the ladle size. The main objective of wire feeding is to increase the residence time of solid aluminum before melting and release of aluminum at a depth of 0.5-1.5 meters from top so that aluminum reacts with steel before floating to the top. The recovery of Aluminum is more than double of recovery achieved with pellet/shot additions.
Therefore, we also produce and supply Aluminum Wire Rods for steel deoxidation is used during the production of steel.
Currently the common diameters of our Aluminum Wire Rod are 7,6; 9,5; 12; 15; 19mm.
Capacity: 500 tons/month.
In addition to above specification, grades, sizes and shape, we also do produce customized specification, size and shape of aluminum deoxidizer as per customer’s requirements.