C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
53/127, 39/13, 5
C21B 11/00 (2006.01) C21B 13/00 (2006.01) C21C 5/00 (2006.01) C21C 5/35 (2006.01) C22B 5/10 (2006.01) C22B 34/32 (2006.01) F27D 3/00 (2006.01) F27D 3/10 (2006.01) F27D 99/00 (2010.01) F27B 3/08 (2006.01) F27D 3/16 (2006.01)
Patent
CA 1336042
The invention is concerned with a method of charging raw materials in a smelting reduction of ores using a smelting reduction converter furnace comprising a vessel for holding molten metal and slag, means for supplying a first gas into the slag, a mouth and a hollow chute located at the mouth of the furnace for supplying raw ore therethrough into the vessel. The method of the invention comprises the steps of charging raw ore into the vessel of the furnace through the hollow chute; and concurrently with the charging of raw ore supplying a second gas inside the hollow chute and substantially about the inner circumferential periphery thereof and in the same direction of travel as the charging raw ore, so as to substantially surround the raw ore while traveling through the hollow chute and while traveling into the vessel of the furnace, thereby to prevent flying of the charging raw ore.
588226
Inoue Shigeru
Iwasaki Katsuhiro
Kawakami Masahiro
Kawata Hitoshi
Takahashi Kenji
Nkk Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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