Patent ID: 7600397

Claim:
A process for granulating slag from a blast furnace or a smelting reduction plant, comprising: feeding a granule/water mixture that was formed during granulation and combustion flue gas including H 2 S-containing vapors to a granulation tank and then to a dewatering installation, and dewatering the granules in the dewatering installation; at least partially condensing the H 2 S-containing vapors and gases formed during the granulation by injecting water in a condensation space which is flow-connected to the granulation tank, the water injection being at a water injection point; discharging H 2 S-containing residual gases from the condensation space below the water injection point, and burning H 2 S from the condensation space; and after the residual gases have been discharged from the condensation space, passing the residual gases through a hot slag channel in countercurrent to a flow direction of hot slag therethrough, thereby burning H 2 S to form SO 2 .