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公开(公告)号：US3617897A
公开(公告)日：1971-11-02
申请号：US3617897D
申请日：1969-04-22
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： SANDBERG HANS KARL GUSTAV , BENGTSSON ERIK AXEL
IPC: C21C5/32
CPC classification number: C21C5/32
Abstract: The final phase of carbonaceous metal melt refining operation is carried out with a deficiency of oxygen in the furnace space in order to reduce the wear of the furnace lining without decreasing the content of iron oxide in the slag.
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