姚娜, 兴超, 李祥胜. Production Practice of Hot Metal Pretreatment Desulphurization by KR Mechanical Stirring Method[J]. Special Steel, 2011, 32(4): 34-35.DOI:
The KR method is selected for pretreated desulphurization of 205 t hot metal according to the comparison results of advantages and characteristics between KR mechanical stirring method and jetting method. The main ingredient of used desulphurizing agent is (%) 76 ~80CaO
7 〜12CaF
2
≤5SiO
2
. Production results show that after pretreatment by KR stirring method
the sulfur content in hot metal may decrease to less than 0. 005% ; the service life of stirring head is 270 heats; the total pretreated time by KR method is 35 - 42 min ; and the desulfurization amount in converter melting is less than 0. 002%.