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51. 发明专利

JPH11501864A 失效
公开(公告)号：JPH11501864A
公开(公告)日：1999-02-16
申请号：JP52686996
申请日：1996-02-15
IPC分类号： A62D3/00 , A62D3/32 , A62D101/20 , A62D101/22 , A62D101/26 , A62D101/28 , B01J10/00 , B09B3/00 , C07C1/00 , C10B49/14 , C10B53/00 , C10J3/57 , F27B3/04 , F27B3/08 , F27D3/15 , F27D3/16 , F27D3/18

52. 发明专利

JP2856576B2 失效
公开(公告)号：JP2856576B2
公开(公告)日：1999-02-10
申请号：JP22003891
申请日：1991-08-30
申请人： SHINNIPPON SEITETSU KK
发明人： KUROKI SUMIICHI , KUMAKURA MASANORI , KASHIWABARA TSUKASA , MATSUO SHINJI
IPC分类号： C21C1/02 , C21C7/072 , F27D3/18

53. 发明专利

JP2812852B2 失效
公开(公告)号：JP2812852B2
公开(公告)日：1998-10-22
申请号：JP6831393
申请日：1993-03-26
IPC分类号： C21C1/02 , C21C1/04 , F27D3/18

54. 发明专利

JP2532584B2 失效
公开(公告)号：JP2532584B2
公开(公告)日：1996-09-11
申请号：JP14245488
申请日：1988-06-09
申请人： JGC CORP
发明人： YAMADA SHOICHI , KAWACHI SATOSHI
IPC分类号： F27B1/00 , F23C5/32 , F23G5/32 , F27B1/20 , F27D3/18

55. 发明专利

JP2518570B2 失效
公开(公告)号：JP2518570B2
公开(公告)日：1996-07-24
申请号：JP24744691
申请日：1991-09-26
申请人： JOHANNESBURG CONS INVEST
发明人： BODENSTEIN JOHANNES JACOBUS , EHLERS KRAUSE LUDWIG , PERRY KEVIN PHILIPPE DANIEL
IPC分类号： C22B5/02 , C21B7/00 , C21B13/00 , C22B1/00 , C22B1/06 , C22B1/10 , C22B5/12 , C22B5/18 , C22B9/00 , C22B9/05 , C22B15/06 , C22B23/02 , F27D3/18

56. 发明专利

JPH08176640A ARC FURNACE SMELTING 失效
公开(公告)号：JPH08176640A
公开(公告)日：1996-07-09
申请号：JP15769995
申请日：1995-06-23
申请人： NIPPON KOKAN KK
发明人： MIZUKAMI HIDEAKI , SUZUKI MITSUO , NAKAGAWA KEIICHI , SUGIYAMA SHUNICHI , KUBO HIROTSUGU , HOSOKAWA TAKAHIRO , NAKAYAMA MICHIO
IPC分类号： C21C5/52 , F27D3/16 , F27D3/18
摘要： PURPOSE: To efficiently effect secondary combustion and to accelerate a scrap smelting speed by blowing gaseous oxygen for secondary combustion at a specific flow rate in and at the specific position and angle into the slag bath in an arc furnace. CONSTITUTION: The carbonaceous material from a lance 7 for blowing the carbonaceous material is subjected to primary combustion by the oxygen from an oxygen lance 6 for primary combustion in an arc furnace body 1 having a graphite electrode 4. The gaseous CO generated by such combustion is subjected to secondary combustion by the oxygen from an oxygen lance 8 for secondary combustion. The heating of molten metal is improved and the smelting of the scrap 1 is accelerated by the combustion heat thereof, by which the production efficiency is improved. The thickness of the slag bath 12 in this arc smelting method is specified to >=500mm and further the discharge holes of the oxygen lance 8 for secondary combustion are formed to >=1 holes and the positions thereof are held at >=400mm from the surface of the molten metal 11 in the arc furnace smelting method. The gaseous oxygen for secondary combustion is blown into the slag bath 12 by controlling the flow rate Q thereof per hole to Q>=7.5Nm /min and the discharge angle θ deg. to 10

57. 发明专利

JPH0841557A DEVICE FOR CONCENTRATE INJECTION IN CONVERTER FOR SMELTING NON-FERROUS METAL 失效
公开(公告)号：JPH0841557A
公开(公告)日：1996-02-13
申请号：JP17929394
申请日：1994-07-29
申请人： MITSUBISHI MATERIALS CORP
发明人： ABE KIYOTAKA , TANAKA TAIICHI , OIKAWA KIYOMICHI , OSHIMA HIDENORI
IPC分类号： C22B15/06 , F27D3/18
摘要： PURPOSE:To provide a concentrate injecting device for preventing the concentrate leakage from a tuyere pipe and stabilizing the concentrate injecting operation, extremely effective for the safety and environment. CONSTITUTION:An outer cylinder 18 (a part of a tuyere pipe 3a) is fixed by welding coaxially to the tip part of an inner cylinder as the main body of the tuyere pipe 3a through a flange 19. A ceramic 20 having excellent wear resistance is formed by casting in the inner peripheral surface of this outer cylinder 18. Since the concentrate energetically dropped from a divided passage 4a by air flow is hit against the ceramic 20 of the tuyere pipe 3a, the damage to the tuyere pipe 3a is prevented. An annular projecting part 4c of a tuyere box 4 is fitted to the recessed part 3e of a reinforcing metal fitting 3. A screw part 18a is formed on the outer periphery of the tip part of the outer cylinder 18 and screwed with the screw part formed in the inner surface of the annular projecting part 4c of the tuyere box 4. That is, the tuyere pipe 3a is screwed into the tuyere box 4.

58. 发明专利

JPH0762165B2 失效
公开(公告)号：JPH0762165B2
公开(公告)日：1995-07-05
申请号：JP6909387
申请日：1987-03-25
IPC分类号： C21C7/072 , C21C5/48 , F27D3/18

59. 实用新型

JPH0723435Y2 失效
公开(公告)号：JPH0723435Y2
公开(公告)日：1995-05-31
申请号：JP11062491
申请日：1991-12-17
IPC分类号： B65D88/26 , B65G69/18 , C21C7/04 , F27D3/18

60. 实用新型

JPH0650535Y2 失效
公开(公告)号：JPH0650535Y2
公开(公告)日：1994-12-21
申请号：JP14729288
申请日：1988-11-10
IPC分类号： C21C5/46 , F27D3/18

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