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2011-Sustainable Industrial Processing Summit
|Flogen Star OUTREACH
|2291-1227 (Metals and Materials Processing in a Clean Environment Series)
AHMSA raw materials to Hot metal production, coal and coke mainly, have high values ofsulfur (0.9 - 1%). As a consequence, the value of sulfur in hot metal is one of the highestworldwide (0.15 – 0.18%). This generates that we have to use large volumes ofsulphurising agents to meet sulfur requirements by the steel works which range from 30-150 PPM. and promotes a high rate of slagEfforts have been directed to seek alternatives to improve the physical and chemicalconditions of the slag generated during the desulphurisation process, seeking to have morefluid slag, easy extraction for skimming operations and drained from the torpedo cars inorder to increase hot metal yield and maintain clean and high transport capacity.This paper describes the benefits achieved with the use of slag aditive during thedesusphurization process, regarding the increase in the yield of pig iron delivered to theBOF shop and the behavior of the tonnage of pig iron transported by the fleet of torpedocars.