Desulfurization of pig iron is a process of reducing its sulfur content, which is an important requirement in steel production. The desulfurization operation is carried out at the tap and after tapping the pig iron from the furnace in the ladle furnace unit.
At modern metallurgical plants, the presence of departments for off-blast iron desulfurization is mandatory. Desulfurization of pig iron is especially relevant with a high sulfur content in coking coals and, as a consequence, in coke and pig iron.
Desulfurization leads to several positive results at once, the main ones being increased efficiency of blast furnace production, increased supply of high-quality pig iron and castings from it, and expanded production of high-quality steels.
The use of magnesium as a desulfurizer allows reducing the sulfur content in pig iron to 0.002–0.010%. At the same time, magnesium consumption is minimal.
JSC “Titanium Institute” has a modern advanced technology for desulphurization of cast iron with granulated magnesium.
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