Magnesium is the most efficient DS compound for Hot Metal Desulphurisation. Earlier it was used as a mono injection compound because of its high reactivity. Nowadays it is used in co-injection with either Fluidized Lime or Calcium Carbide.
To be used in Hot metal ladle at Hot Metal Desulphurisation Station. The treatment is mostly performed through pneumatic conveying system, N2 as a conveying media using dip-lance injection. To get the best results it should be injected with lime or calcium carbide.
Magnesium based DS Reagent has a boiling point of 1105 °C. So when it comes in contact with hot metal (1250 °C - 1450 °C) it vaporises. Magnesium gas dissolves into liquid iron and then it reacts with the dissolved S in the hot metal. The reaction is mainly gas/liquid reaction.
Reaction is as follows:
Mg + Fes = Mgs + Fe
Mgs + CaO = Cas + Mgo
● Magnesium is the most reactive reagent than lime or calcium carbide based reagents.
● Low consumption hence less use of machineries.
● Lower injection time, hence reduced cycle time.
● Low slag volume generated after reaction which incurs lower iron loss.
The reagent is supplied to the steel plant in transport bulkers with N2 gas inside. The reagent is unloaded by pneumatic means to the site storage silo.
| Composition |
Magnesium Metal: 97% min Lime for passivation: 3% max |
| Grain Size Distribution |
< 0.2 mm - 5% max. 0.2 - 0.5 mm - 40 - 60% 0.5-0.8 mm - 30 - 50% >0.8 mm - 5% max. |
| Density | 800 Kg/m3 |
| Packing | In Silo tanker under dry N2 cover |
| Application | Hot Metal Desulphurisation by injecting in the ladle through pneumatic conveying system. |
DESMET REAGENT PVT. LTD. an ISO 9001:2015 and 45001:2018 certified company is a manufacturer and supplier of high quality Desulphurising reagents and Total Desulphurising Management provider for iron and steel industry.
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