Aluminum Deoxidizer

Aluminum is one of the very strong and commonly used deoxidizer in steel making. It also finds use as a deoxidizer, grain refiner, nitride former and alloying agent in steels. Its ability to scavenge nitrogen and promote the formation of “pancake” ferrite grains led to its widespread use in drawing quality steels, especially for automotive applications. Also aluminum improves strength in low-carbon steels by fixing the interstitial nitrogen.

We produce and supply aluminum deoxidizer in the form of shots, pellets, wire rods and any other shape suitable for use in the manufacture of iron, steel and ferro alloys. We offer three grades of Aluminum Deoxidizer, namely Grade 1; Grade 2 and Grade 3. Aluminum Deoxidizer Grade 1 is normally suitable for the manufacturing of mild steel and low alloy steels, whereas Aluminum Deoxidizer Grade 2 is normally required for manufacturing of alloy steels and special steels. Aluminum Deoxidizer Grade 3 is used for ferro alloy production. 

The Aluminum Deoxidizer has to be of uniform quality, free from dross, slag and other harmful contaminants.

Chemical Composition

Constituent

Grade 1

Grade 2

Grade 3

Aluminum, Min.

95 %

97 %

98 %

Impurities

Copper, Max

1 %

0.5 %

Zinc, Max

1 %

0.5 %

Silicon, Max

1 %

0.5 %

Iron, Max

1 %

0.6 %

Total of copper zinc, magnesium, silicon and iron, Max

5 %

3 %

2 %

Aluminum Shots (Granules)

The Aluminum Shots (Granules) are produced and supplied as per customer’s requirement.

Currently the common size is:

Height: 15mm; Diameter: 13mm; Weight: 5g.

Capacity: 500 tons/month.

Aluminum Pellets

The Aluminum Pellets are produced and supplied as per customer’s requirement.

Currently the common sizes of our Aluminum Pellet are:

Height: 35 mm; Diameter: 40 mm; Weight: 100g

Height: 25mm, Diameter: 25mm; Weight: 20g

Capacity: 800 tons/month.

Aluminum Wire Rods

   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.

    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 manufacture customized specification, size and shape of aluminum deoxidizer as per customer’s requirements.