STUDY ON DISTRIBUTION OF SULFUR ELEMENT IN BLAST FURNACE (BF) PROCESS WITH DIFFERENT PELLET PROPORTIONS

In this study, a series of BF smelting industrial tests were conducted with different proportions of pellet in iron-bearing materials in a 450 m(3) BF in Hebei, China. The results showed that with increasing proportion of pellet, total sulfur(S) input amount of the raw materials in BF iron-making process decreased after a slight increase. The sulfur input of pellets increased while that of sinter, coke and coal tended to decrease. On the other hand, the quantity and proportion of sulfur element in BF gas had a small rise while those in BF slag did not change much, and the quantity of sulfur in BF dust and iron remained relatively stable. The result revealed that increasing the pellet proportion will not affect the quality of pig iron (PI), but also can reduce the sulfur load of BF.