公开(公告)号：JP2001049329A

公开(公告)日：2001-02-20

申请号：JP2000205845

申请日：2000-06-02

Applicant: TECH RESOURCES PTY LTD

Inventor： JOHN ALEXANDER INZU

IPC: C21B13/02 ,  C21B11/00 ,  C21B11/08 ,  C21B13/00 ,  C21C5/56 ,  C21C7/04 ,  C21C7/072 ,  C21C7/076 ,  F27D17/00

Abstract: PROBLEM TO BE SOLVED: To provide a direct refining method which can be applied to such a case that the momentum of gas flow from a metal layer to the upper part is insufficient. SOLUTION: Molten bath having the metal layer 15 and a slag layer 16 thereon is formed in a metallurgical vessel, and a metal-containing supplying material and solid carbonaceous material are poured into a plurality of lance/ tuyeres 11 with carrier gas. The gas flow from the metal layer to the upper part is developed and a turbulance is generated in at least interface between the slag layer and the metal layer, and the gas is blown into the slag layer through the plurality of lance/tuyeres. The turbulent is developed in the upper range of the slag layer, and the splash, drips and flow of molten material are spread from the slag layer into top space of the vessel existing at the upper part from the slag layer. Then, a process for afterburning of reaction gas in the top-space 43 and/or the upper range of the slag layer is provided.