Blast furnace iron production and use of magnesium for desulphurisation
Use of magnesium (Mg) granules for desulphurisation of blast furnace iron shows marked regional variations. In China, which produces 60% of the world’s iron, lime is the preferred desulphuriser. In the West, although iron production has fallen in recent years, Mg consumption has risen, due to the higher demand for low sulphur steels and process efficiencies associated with Mg rather than other desulphurisers. If China, were to move to Mg desulphurisation, this would result in further costs to industry unless alternatives such as recycled Mg scrap were made more readily available.