What is Steel Slag?


11:29 AM

1 min read
What is Steel Slag? Blog Image


Recently, the member (Science) of Niti Aayog released the Guidelines for Utilization and Processing of Steel Slag as Processed Steel Slag Aggregates in Road Construction.

About Steel Slag:

  • Steel slag is an industrial byproduct obtained from the steel manufacturing industry.
  • It is produced in large quantities during steel-making operations that use electric arc furnaces.
  • It can also be produced by smelting iron ore in a basic oxygen furnace.
  • Primarily, slag consists of calcium, magnesium, manganese and aluminium silicates and oxides in various combinations.
  • The cooling process of slag is responsible mainly for generating different types of slags required for various end-use consumers

Applications of Steel Slag

  • It has found use as a barrier material remedy for waste sites where heavy metals tend to leach into the surrounding environment.
  • Steel slag forces the heavy metals to drop out of solution in water run off because of its high oxide mineral content.
  • It has been used successfully to treat acidic water discharges from abandoned mines.
  • It can replace coarse aggregate due to a higher impact and crushing strength, better anti-skid capacity.

Q1: What is a blast furnace?

It is a large structure in which iron ore is heated under pressure so that it melts and pure iron metal separates out and can be collected

Source: International Conference on Steel Slag Road: Member (Science) Niti Aayog, Dr.V.K.Saraswat releases the Guidelines for Utilization of Steel Slag in Road Construction