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31. 发明专利

JPH0333772B2 失效
公开(公告)号：JPH0333772B2
公开(公告)日：1991-05-20
申请号：JP8085082
申请日：1982-05-15
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA EIJI , TSUCHITANI NOBUO , HAMADA HISAO , KOITABASHI HISAMITSU , TAKADA SHIKO , INATANI TOSHIHIRO , KADOTO MITSUO
IPC分类号： C22B5/10 , C21B13/02 , C21C7/00 , C22B9/10 , C22C33/04

32. 发明专利

JPH0321604B2 失效
公开(公告)号：JPH0321604B2
公开(公告)日：1991-03-25
申请号：JP5156583
申请日：1983-03-29
申请人： KAWASAKI STEEL CO
发明人： TAKADA SHIKO , TSUCHITANI NOBUO , KATAYAMA EIJI , SAKIMURA HIROSHI , HAMADA SHUNJI , TANAKA YASUO
IPC分类号： C22B34/32 , C21B11/02 , C21B13/02 , C21B13/14 , C22B1/214 , C22C33/04 , C22C33/08

33. 发明专利

JPH0314887B2 失效
公开(公告)号：JPH0314887B2
公开(公告)日：1991-02-27
申请号：JP1357383
申请日：1983-01-28
申请人： KAWASAKI STEEL CO
发明人： KADOTO MITSUO , INATANI TOSHIHIRO , KATAYAMA EIJI , TAKADA SHIKO , HAMADA HISAO , TSUCHITANI NOBUO , FUJITA TSUTOMU , HAMADA SHUNJI
IPC分类号： C21B11/02 , C21B13/00 , C21B13/14 , F27D3/10

34. 发明专利

JPH032207B2 失效
公开(公告)号：JPH032207B2
公开(公告)日：1991-01-14
申请号：JP5214283
申请日：1983-03-28
申请人： KAWASAKI STEEL CO
发明人： HAMADA SHUNJI , FUJITA TSUTOMU , IIZUKA MIKIO , TANAKA YASUO , SAKIMURA HIROSHI , TSUCHITANI NOBUO , HAMADA HISAO , INATANI TOSHIHIRO , TAKADA SHIKO , KADOTO MITSUO
IPC分类号： C22B34/32 , C21B11/02 , C21C5/56

35. 发明专利

JPH0214412B2 失效
公开(公告)号：JPH0214412B2
公开(公告)日：1990-04-09
申请号：JP12880585
申请日：1985-06-13
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA EIJI , HAMADA HISAO , TAKADA SHIKO , TAKEUCHI SHINOBU , USHIJIMA TAKASHI , IGAWA KATSUTOSHI
IPC分类号： C21B13/00 , C21C5/38 , C22B5/12

36. 发明专利

JPH0214411B2 失效
公开(公告)号：JPH0214411B2
公开(公告)日：1990-04-09
申请号：JP12633485
申请日：1985-06-12
申请人： KAWASAKI STEEL CO
发明人： TAKEUCHI SHINOBU , HAMADA HISAO , TAKADA SHIKO , KATAYAMA EIJI , IGAWA KATSUTOSHI , USHIJIMA TAKASHI
IPC分类号： C21B13/00 , C21C5/38 , C22B5/12

37. 发明专利

JPH01122988A GROWTH OF SINGLE CRYSTAL AND APPARATUS FOR PRODUCTION THEREOF 失效
公开(公告)号：JPH01122988A
公开(公告)日：1989-05-16
申请号：JP27937287
申请日：1987-11-06
申请人： KAWASAKI STEEL CO
发明人： TAKADA SHIKO
IPC分类号： C30B15/02 , C30B15/26
摘要： PURPOSE:To accomplish continuous growth of single crystal with stabilized quality, by continuously feeding the raw granules, while melting, to the bottom of a crucible without causing thermal convection and continuously pulling while keeping the level of the melt in the crucible constant. CONSTITUTION:A crucible 2 held in a susceptor 3 is revolved by a drive 4, and a melt put in the crucible 2 is heated by a heater 5 to pull an ingot 7 for the single crystal, a porous sleeve 11 consisting of porous matter is inserted into the inner sidewall of the crucible 2, and above it, the discharge pipe of a quantitative feeder 14 for raw granules is opened. In order to detect the level of the hot melt 6 in the crucible, gamma-rays are emitted 21 so as to cross diagonally through the melt surface, being detected by a detector 22 located at the counter position. And, the values thus detected enter the controller 23, which controls the quantitative feed drive 15 so as to keep the melt level constant. Thus, the objective single crystal with its length equivalent to that for the conventional two or more-batch operation can be obtained in one operation.

38. 发明专利

JPS63157807A OPERATION OF SMELTING REDUCTION FURNACE WITH CARBONIC MATERIAL PACKING LAYER 失效
公开(公告)号：JPS63157807A
公开(公告)日：1988-06-30
申请号：JP30600486
申请日：1986-12-22
申请人： KAWASAKI STEEL CO
发明人： USHIJIMA TAKASHI , KATAYAMA EIJI , HAMADA HISAO , TAKADA SHIKO , IGAWA KATSUTOSHI
IPC分类号： C21B11/02 , C21B13/00 , C21B13/02
摘要： PURPOSE:To facilitate smelting of ore in raceway in front of tuyere, by charging a part of flux as lump state together with carbonic material from top of furnace at the time of producing molten iron by blowing the powdery iron ore and the flux together with the hot blast from tuyere of carbonic material packing layer type vertical furnace. CONSTITUTION:The carbonic material for solid reducing material is charged in the furnace from a top charging device 6 in a carbonic material packing layer type vertical smelting reduction furnace 1, to form reducing material packing layer in the furnace. The flux 9, such as powdery iron ore 8 and lime, etc., is blown from the upper step tuyere 4 of furnace and at the same time, hot blast from a blasting device 2 is blown to the upper step tuyere 4 and the lower step tuyere 5 through a distributor 3. The iron ore is smelted together with the flux at the raceway space in front of the upper tuyere 4 and reduced into pig iron by carbonic material in front of the lower step tuyere 5. In this case, by charging a part of flux as lump state from the furnace top, the raceway space in front of the upper step tuyere is become to large and smelting quantity of iron ore is increased, to increase the production of molten iron and also SiO2 in ash in the carbonic material is stabilized by the lime, to restrain the increase of SiO2 content in the molten iron.

39. 发明专利

JPS62230916A METHOD FOR FLUIDIZING AND REDUCING PULVERIZED ORE 失效
公开(公告)号：JPS62230916A
公开(公告)日：1987-10-09
申请号：JP7388786
申请日：1986-03-31
申请人： KAWASAKI STEEL CO
发明人： TAKEUCHI SHINOBU , HAMADA HISAO , TAKADA SHIKO , KATAYAMA EIJI , IGAWA KATSUTOSHI
IPC分类号： C22B1/10 , C21B13/00
摘要： PURPOSE:To reduce pulverized ore at a high rate of reduction without causing sintering when the ore is fluidized and reduced, by making the flow rate of a gas near the wall of a fluidized bed higher than the flow rate of a gas in the interior of the bed during operation. CONSTITUTION:A fluidizing furnace 1 used has a dispersion plate 4 for introducing a hot reducing gas 6 for fluidization into the furnace 1 and a slit 5 for introducing a hot reducing gas 7 for preventing sintering into the furnace 1 at the lower part. Pulverized ore is charged into the furnace 1 from a feed hole 8 and the hot reducing gas 6 for fluidization and the hot reducing gas 7 for preventing sintering are introduced into the furnace 1 to form a fluidized bed 3, where the ore is reduced. During the operation, the flow rate of the gas 7 is made higher than the flow rate of the gas 6.

40. 发明专利

JPS62227017A PRODUCTION OF MOLTEN METAL FROM POWDERY ORE 失效
公开(公告)号：JPS62227017A
公开(公告)日：1987-10-06
申请号：JP7045886
申请日：1986-03-28
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA EIJI , HAMADA HISAO , TAKADA SHIKO , IGAWA KATSUTOSHI , TAKEUCHI SHINOBU , SATO KAZUHIKO , USHIJIMA TAKASHI
IPC分类号： C21B11/02 , C21B13/00
摘要： PURPOSE:To efficiently smelt and reduce powdery ore by charging the powdery ore along with oxygen into the fluidized bed of a carbonaceous solid reducing agent in a shaft reducing furnace, and blowing an oxygen-contg. gas into the packed bed at the appropriate depth of a jet. CONSTITUTION:The bed 2 packed with a carbonaceous solid reducing agent is formed in the shaft reducing furnace 1, and an oxygen-contg. gas 6 is blown in from a tuyere 5. Consequently, a race-way of a jet depth J is formed in the packed bed 2, and the reducing agent is burned. The formed high-temp. reducing gas goes up through the packed bed 2, diffuses, and functions as a fluidization gas. As a result, the fluidized bed 3 is formed thereon and maintained. Powdery ore 4 is charged into the fluidized bed 3 along with a flux and oxygen, hence the ore is smelted and reduced, and molten metal 10 and molten slag 9 are formed. In this case, the jet depth J of the blown-in gas 6 is limited to conform to the equation 0.1

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