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1. 发明申请

WO1989002477A1 METHOD OF CHARGING ORE IN MELT-REDUCTION 审中-公开
标题翻译：减少金属矿石的方法
公开(公告)号：WO1989002477A1
公开(公告)日：1989-03-23
申请号：PCT/JP1988000911
申请日：1988-09-09
申请人： NKK CORPORATION , TANABE, Haruyoshi , KAWAKAMI, Masahiro , TAKAHASHI, Kenji , IWASAKI, Katsuhiro , INOUE, Shigeru , KAWATA, Hitoshi
发明人： NKK CORPORATION
IPC分类号： C21B11/00
CPC分类号： C22B34/32 , C21B13/0006 , C21C5/005 , C21C5/35 , C22B5/10 , F27B3/085 , F27D3/0025 , F27D3/10 , F27D3/16 , F27D99/0075 , F27M2001/16
摘要： This invention relates to a method of preventing, during the melt-reduction of Cr ore or iron ore, the scatter loss of the ore and coal at the time of charging. In the present invention, the ore and coal are charged down into a furnace from a shoot extended near a furnace port or connected to a furnace body. The ore and coal are charged down into the furnace while a gas is jetted outward of the shoot form nozzles disposed in the circumferential direction inside and near the tip of the shoot so that the raw materials can be charged more effectively while reducing the scatter loss.
摘要翻译：本发明涉及一种在Cr矿石或铁矿石的熔融还原过程中防止矿石和煤在充电时的分散损失的方法。在本发明中，将矿石和煤从炉口附近延伸的炉口装入炉中或连接到炉体。矿石和煤被放入炉中，同时在喷嘴的尖端附近沿圆周方向喷射的喷嘴形式的喷嘴向外喷射气体，使得原料可以更有效地充电，同时减少散射损失。

2. 发明申请

WO1985003524A1 METHOD FOR REGULATING COMPONENTS OF MOLTEN IRON FLOWING FROM SHAFT FURNACE 审中-公开
标题翻译：用于调节来自轴承炉的钼铁组分的方法
公开(公告)号：WO1985003524A1
公开(公告)日：1985-08-15
申请号：PCT/JP1985000045
申请日：1985-02-04
申请人： NIPPON KOKAN KABUSHIKI KAISHA , YAMADA, Kenzo , IWASAKI, Katsuhiro , OHTSUKI, Mitsuru , ITO, Haruo
发明人： NIPPON KOKAN KABUSHIKI KAISHA
IPC分类号： C21C01/00
CPC分类号： C21C1/00 , C21C1/02 , F27B1/21
摘要： At least one lance is disposed substantially vertically so that the lower end of molten iron of a shaft furnace is isolated from the surface of molten iron flowing through a melted iron trough at a predetermined interval above the trough, and particular component adjustor for adjusting the components of the molten iron is blown from the lance via carrier gas into the molten iron so as to satisfy the following two relational formulae: 0.5

3. 发明申请

WO1989002479A1 PROCESS FOR DECARBURIZING HIGH-Cr MOLTEN PIG IRON 审中-公开
标题翻译：用于脱碳高铬铁皮的方法
公开(公告)号：WO1989002479A1
公开(公告)日：1989-03-23
申请号：PCT/JP1988000909
申请日：1988-09-09
申请人： NKK CORPORATION , TANABE, Haruyoshi , KAWAKAMI, Masahiro , TAKAHASHI, Kenji , IWASAKI, Katsuhiro , INOUE, Shigeru
发明人： NKK CORPORATION
IPC分类号： C21C05/28
CPC分类号： C21B13/0006 , C21C5/005 , C21C5/35 , C21C7/0685 , Y02P10/136
摘要： A process for decarburizing high-Cr molten pig iron under atmospheric pressure in a short time with minimized Cr loss due to oxidation is disclosed. A fundamental feature of the process comprises top-blowing decarburizing O2 diluted with an inert gas through a top-blowing lance against high-Cr molten pig iron in a vessel and at the same time blowing an inert gas through a bottom-blowing tuyere to vigorously stir the molten pig iron. Another feature of the process comprises controlling a slag amount in the above-described decarburizing blowing to thereby depress Cr loss due to oxidation. A further feature comprises conducting a predetermined denitrification after the blowing to thereby economically produce low-nitrogen molten iron with depressed Cr loss due to oxidation.
摘要翻译：熔融不锈钢是mfd。通过连续地使Cr材料如Cr矿石或Cr颗粒在一个容器中以高处理速度进行熔融还原和脱碳。方法包括熔融红。通过底吹风口吹入惰性气体，在熔融金属表面上形成凸起，并通过侧吹风口将惰性气体吹向凸起，以将熔融金属扩散到炉渣中的Cr材料浮起区域，以加速用熔融金属中所含的C还原Cr材料。或者，通过顶吹喷枪将O2吹入熔融金属中，将二氧化二氧化二氧化成炉渣，形成主要在炉渣中的二次燃烧区，并通过侧吹气体剧烈搅拌炉渣，以高效率二次燃烧到Cr矿石，同时将第二燃烧比保持在0.3以上以确保高二次燃烧。在熔体还原之后，排出炉渣和用惰性气体稀释的用于脱碳的顶吹O2，并通过底吹风口吹入惰性气体，剧烈搅拌熔融金属。

4. 发明申请

WO1989002478A1 PROCESS FOR PRODUCING MOLTEN STAINLESS STEEL 审中-公开
标题翻译：生产不锈钢的方法
公开(公告)号：WO1989002478A1
公开(公告)日：1989-03-23
申请号：PCT/JP1988000910
申请日：1988-09-09
申请人： NKK CORPORATION , TANABE, Haruyoshi , KAWAKAMI, Masahiro , TAKAHASHI, Kenji , IWASAKI, Katsuhiro , INOUE, Shigeru
发明人： NKK CORPORATION
IPC分类号： C21B13/00
CPC分类号： C21C5/005 , C21B13/0006 , C21C5/35 , C21C7/0685 , Y02P10/136
摘要： A process for producing molten stainless steel by continuously subjecting Cr materials such as Cr ores or Cr pellets to melt reduction and decarbonization in one vessel at high treating speeds, which comprises, in the melt reduction, blowing an inert gas or the like through a bottom-blown tuyere to form projections on the molten metal surface and blowing an inert gas or the like against the projections through a side-blown tuyere to diffuse the molten metal into a Cr material-floating zone in the slag for accelerating the reduction of the Cr material with C contained in the molten metal and, on the other hand, blowing O2 for decarbonization into the molten metal through a top-blown lance and O2 for secondary combustion into the slag to form a secondary combustion zone mainly in the slag, and vigorously stirring the slag by the side-blown gas to give a heat produced by the secondary combustion to the Cr ores with high efficiency while keeping a second combustion ratio at 0.3 or more for assuring high secondary combustion and, after the melt reduction, discharching the slag and top-blowing O2 for decarbonization diluted with an inert gas and blowing an inert gas through the bottom-blown tuyere to vigorously stir the molten metal.
摘要翻译：通过连续地使Cr材料如Cr矿石或Cr颗粒物质以高处理速度在一个容器中进行熔融还原和脱碳来生产熔融不锈钢的方法，其包括在熔融还原中通过底部吹入惰性气体等在熔融金属表面上形成凸起，并通过侧吹风口将惰性气体等吹向突起，以将熔融金属扩散到炉渣中的Cr材料浮起区域中，以加速Cr的还原在熔融金属中含有C的材料，另一方面通过顶吹喷枪吹入用于脱碳的O2，将二次燃烧的二氧化二次吹入炉渣中，形成主要在炉渣中的二次燃烧区域，并大力地通过侧吹气体搅拌炉渣，以高效率向二次燃烧产生的热量，同时将第二燃烧比保持在0.3以上，确保高二次燃烧，并且在熔融还原之后，用惰性气体稀释炉渣和用于脱碳的顶吹O2，并通过底吹风口吹入惰性气体，以剧烈搅拌熔融金属。

5. 发明申请

WO1989001532A1 PROCESS FOR MELT REDUCTION OF Cr STARTING MATERIAL AND MELT REDUCTION FURNACE 审中-公开
标题翻译：降低起始材料和降低熔体的方法
公开(公告)号：WO1989001532A1
公开(公告)日：1989-02-23
申请号：PCT/JP1988000800
申请日：1988-08-11
申请人： NKK CORPORATION , TANABE, Haruyoshi , KAWAKAMI, Masahiro , TAKAHASHI, Kenji , IWASAKI, Katsuhiro , INOUE, Shigeru
发明人： NKK CORPORATION
IPC分类号： C22C33/04
CPC分类号： C22B5/10 , C21B13/0013 , C21C5/005 , C21C5/35 , C22B34/32 , C22C33/04 , Y02P10/136
摘要： A process for directly obtaining high Cr content melt by melt reduction of Cr starting materials such as Cr ore pellets, etc. is disclosed, which comprises using a furnace equipped with a bottom-blowing nozzle, a side-blowing nozzle, and a top-blowing nozzle, blowing an inert gas or the like through the bottom-blowing nozzle to form a projection on the molten metal surface, blowing an inert gas against the projection through the side-blowing nozzle to diffuse the molten metal into a Cr material-floating region in the slug for accelerating reduction of the Cr-containing material with C contained in the molten metal, blowing O2 for decarburization into the molten metal through the top-blowing lance, and blowing O2 for secondary combustion into slug to form a secondary combustion region mainly in slug, and strongly stirring slug by the side-blowing gas to give the heat produced by the secondary combustion to Cr ores with high efficiency, with keeping secondary combustion ratio at 0.3 or more for assuring the high secondary combustion.
摘要翻译：通过熔融指向获得高Cr含量熔体的方法。的Cr原料如Cr矿粒等包括使用装有底吹喷嘴，侧吹喷嘴和顶吹喷嘴的炉，通过底吹喷嘴吹入惰性气体等在熔融金属表面上形成突出物，通过侧吹喷嘴将惰性气体吹向突起，将熔融金属扩散到渣块中的Cr材料浮起区域以加速红色。的Cr-contg。含有熔融金属中的C的材料，通过顶吹喷枪将O2吹入熔融金属，并吹入O2。燃烧区域主要是絮状物，并通过侧吹气强烈搅拌，以产生由秒产生的热量。燃烧到Cr矿石，效率高，同时保持秒。燃烧比为0.3以上，以确保高的秒。燃烧。

6. 发明申请

WO1985003525A1 DEVICE FOR REMOVING IMPURITIES CONTAINED IN MELTED IRON FLOWING FROM SHAFT FURNACE 审中-公开
标题翻译：用于去除熔融铁流出的熔融炉中的污染物的装置
公开(公告)号：WO1985003525A1
公开(公告)日：1985-08-15
申请号：PCT/JP1985000046
申请日：1985-02-04
申请人： NIPPON KOKAN KABUSHIKI KAISHA , YAMADA, Kenzo , IWASAKI, Katsuhiro , OHTSUKI, Mitsuru , ITO, Haruo
发明人： NIPPON KOKAN KABUSHIKI KAISHA
IPC分类号： C21C01/00
CPC分类号： F27B1/21 , C21B7/14 , C21C1/00
摘要： A slag trough (2N) for removing molten shaft furnace slag isolated from melted iron by a skimmer (3) is provided upstream from the skimmer (3) mounted in midway on a molten iron trough (1), and at least two partition walls (4a, 4b, 4c) are provided at a predetermined distance in the trough (1) downstream from the skimmer (3), the trough (1) is thus partitioned into at least two reaction zones (6a, 6b, 6c), lances (8a, 8b, 8c) for blowing particular flux for removing the impurities contained in the molten iron via carrier gas are disposed substantially vertically above the two reaction zones, the lower ends of the lances are isolated substantially vertically from the surface of the melted iron, and branch slag troughs (9a, 9b, 9c) are respectively provided with at least two reaction zones (6a, 6b, 6c).

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