Total DS Management

Desmet has the expertise and more than 10 years of experience in Total DS Management which includes operation and maintenance of DS plant.

Desmet has the back up of all types of DS reagents and other consumables like lance, sample probe etc. and a team of qualified and experienced engineers for operation and maintenance.

Desmet has the experience to run total DS Management in Bhusan Steel Ltd, ESSAR Steel Ltd., and ISP SAIL.

Desulphurisation For hot metal

Mainly 3 types of reagents are used by top lance injection.
a] Lime (CaO), b] Calcium Carbide (CaC2), c] Magnesium (Mg)

  • CaO and Hot metal - Solid - Liquid diffusion reaction
    CaO + Fes = Cas + Feo
    1 Kg Lime removes 0.57 Kg Sulphur
  • CaC2 and Hot metal - Solid - Liquid diffusion reaction
    CaC2 + Fes = Cas + Fe + 2C
    1 Kg CaC2 removes 0.5 Kg Sulphur
  • Mg and Hot metal - Vapor - Liquid diffusion reaction
    Mg + Fes = Mgs + Fe
    MgS + CaO = Mgo + Cas
    1 Kg Mg removes 1.33 Kg Sulphur

Desulphurisation of Steel

(12CaO.7A1203) Flux - After adding to steel the Calcium Aluminate flux becomes an oxidised semi liquid / liquid which floats on the surface of liquid steel and absorbs the non metallic inclusions and impurities consisting mainly of Sulphur.