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1. 发明专利

JP2009133007A Nozzle for injecting powdery material 有权
标题翻译：用于注射粉末材料的喷嘴
公开(公告)号：JP2009133007A
公开(公告)日：2009-06-18
申请号：JP2008313349
申请日：2008-12-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： AOKI RIICHI , FUKUDA KAZUHISA , NOBEMOTO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： C21C5/48 , C21C7/072 , F27D3/18
摘要： PROBLEM TO BE SOLVED: To provide a nozzle for injecting powdery material, in which an inner surface of an inner tube has excellent wear resistance and high mechanical strength, and each layer in the inner tube constituting the nozzle is firmly stuck while in use.
SOLUTION: The nozzle for injecting powdery material has a three-layer structure formed by laminating an inner layer made of baked ceramics, an intermediate layer made of a buffer material, and an outer layer made of stainless steel or a unidirectional shape memory alloy. A fitting pin comprising the same material as the outer layer is inserted and fixed in a fitting hole which penetrates the outer and intermediate layers and is bored in the inner layer but does not penetrate the inner surface of the inner layer. The depth of the fitting hole is 50% or larger of a sum of the total thickness of the outer, intermediate, and inner layers, and 80% or smaller of a sum of the total thickness of the outer, intermediate, and inner layers.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于注入粉末状材料的喷嘴，其中内管的内表面具有优异的耐磨性和高的机械强度，并且构成喷嘴的内管中的每个层牢固地卡在使用。解决方案：用于注入粉末材料的喷嘴具有三层结构，其通过层压由烘焙陶瓷制成的内层，由缓冲材料制成的中间层和由不锈钢制成的外层或单向形状记忆合金。将包含与外层相同的材料的装配销插入并固定在穿透外层和中间层的嵌合孔中，并且在内层中钻孔但不穿透内层的内表面。装配孔的深度为外层，中层和内层的总厚度之和的50％以上，外层，中层和内层的总厚度之和的80％以下。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2000017316A METHOD FOR MELTING IRON-CONTAINING COLD MATERIAL 失效
公开(公告)号：JP2000017316A
公开(公告)日：2000-01-18
申请号：JP18211198
申请日：1998-06-29
申请人： NIPPON STEEL CORP
发明人： KUMAZAWA HIROYUKI , ONUKI KAZUO , MORITA TAKESHI , MANABE TADASHI
IPC分类号： C21C5/28 , C21C5/30
摘要： PROBLEM TO BE SOLVED: To reduce the supplying quantity of expensive pulverized fine coal by supplying waste tire and/or waste plastics into a furnace from the upper part of a furnace opening part with spontaneous drop instead of the pulverized fine coal through a top-blown lance, to control these waste materials in the range of 20-30% effective secondary combustion ratio under condition of scarcely spending running cost without developing C dust loss, to restrain the development of iron dust to extremely low level and to obtain high yield of molten iron. SOLUTION: A melting method of iron-containing cold material is executed by using a converter having a top-blown lance 2 and nozzles 4 at the furnace bottom, supplying the iron-containing cold material into the converter, in which molten iron exists as seed metal, blowing the pulverized fine coal together with carrier gas from the furnace bottom nozzles to carburize the molten iron, and also, supplying the oxygen from the lance 2 to execute the secondary combustion of generated gas from the molten metal, and efficiently melting the iron-containing cold material to obtain molten high carbon iron 12. In such a case, the waste tire and/or waste plastics are supplied into the furnace from the upper part 6 of the furnace opening part with the spontaneous drop.

3. 发明专利

JPH093520A DOUBLE PIPE TYPE NOZZLE FOR BLOWING POWDER 失效
公开(公告)号：JPH093520A
公开(公告)日：1997-01-07
申请号：JP15147395
申请日：1995-06-19
申请人： NIPPON STEEL CORP
发明人： AOKI RIICHI , FUKUDA KAZUHISA , NOBEMOTO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： C04B37/02 , C21C5/48
摘要： PURPOSE: To provide a double pipe type nozzle for blowing powder to be able to get a long life excellent in durability by forming one body consisting of three layers structure, in a double pipe type nozzle for blowing powder consisting of an internal pipe and an external pipe. CONSTITUTION: The double pipe type nozzle for blowing powder 1 is formed by the internal pipe 5 to blow fluid containing powder and the external pipe 6 to form flow passages 8 for cooling gas to cool this internal pipe 5 around the periphery of the internal pipe 5. At this time, the internal pipe 5 is formed by an inside layer 2 comprising a burnt ceramic pipe (sialon etc.) and, an intermediate layer 3 (about 0,5-1mm thickness) comprising cushioning material (copper, lead and so on), and an outside layer 4 (about 2-3.5mm) comprising one way shape memory alloy and is made as three layers structure formed one body by tightening force. Further, the pipe comprising flame retardant metal such as stainless steel or the like is used for the external pipe 6 and the thickness thereof is made as about 1.5-2.5mm. Thereby, the double pipe type nozzle for blowing powder 1 having an inside surface of the internal pipe 5 excellent in wear resistance and the mechanical strength is provided.

4. 发明专利

JP2006283136A Method for producing reduced iron 有权
标题翻译：生产减少铁的方法
公开(公告)号：JP2006283136A
公开(公告)日：2006-10-19
申请号：JP2005105015
申请日：2005-03-31
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YAMAZAKI TSUTOMU , NOBEMOTO AKIRA , KUMAZAWA HIROYUKI , NAKA HIROTOKU , KUWAUCHI YUKI , ONUKI KAZUO
IPC分类号： C21B13/10 , C22B1/16
摘要： PROBLEM TO BE SOLVED: To provide a method for making easy of a cutting-off work and a removing work of a piling layer and a sticking layer on a furnace hearth by improving the property of the layers.
SOLUTION: In a method for producing reduced iron, with which a formed body obtained by forming the raw material mainly containing iron oxide and adding carbonaceous material needed for the reduction, is reduced by charging the raw material into a reducing furnace after drying; when the raw material is formed to the formed body; into the raw material mainly containing the iron oxide with the carbonaceous material needed to the reduction added thereto, oxide-based reforming material containing SiO
2 is added desirablly in the range of a structure-reforming index R:1-5. R=(X
CaO +X
Al2O3 +X
MgO )/X
SiO2 . Wherein, X
CaO :CaO concentration (mass%), X
SiO2 : SiO
2 concentration (mass%), X
Al2O3 : Al
2 O
3 concentration (mass%) and X
MgO : MgO concentration (mass%).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过提高层的性质来容易地进行切割加工和在炉底上的打桩层和粘合层的去除工作的方法。解决方案：在还原铁的制造方法中，通过形成主要含有氧化铁的原料和加入还原所需的碳质材料而形成的成形体通过在干燥后将原料装入还原炉而减少 ; 当原料形成到成形体时; 在主要含有还原添加的碳质材料的氧化铁的原料中，在结构重整指数R：1的范围内，分别添加含有SiO 2 SBB的氧化物系重整材料 -5。 R =（X 的CaO + X 氧化铝 + X 的MgO ）/ X 的SiO 2 。其中，CaO ：CaO浓度（质量％），X SiO2 ：SiO 2 浓度（质量％），X Al2O3 （质量％）和MgO（MgO）的比例（质量％）。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JPH11172316A METHOD FOR MELTING IRON-CONTAINING COLD MATERIAL 失效
公开(公告)号：JPH11172316A
公开(公告)日：1999-06-29
申请号：JP34351497
申请日：1997-12-15
申请人： NIPPON STEEL CORP
发明人： ONUKI KAZUO , KUMAZAWA HIROYUKI , TSUJI TAKASHI
IPC分类号： C21C5/28 , C21C5/38
摘要： PROBLEM TO BE SOLVED: To restrain the development of carbon-base dust caused by changing of carbonaceous material condition and to achieve the high speed melting by deciding the controlled target upper limit of [C] in the melting period while controlling [C] of molten iron to specific range at the melting middle period according to the carbonaceous material condition, at the time of melting iron-containing cold material while using the carbonaceous material as heat source. SOLUTION: At the time of obtaining the molten iron of >=3.7% [C] by supplying the iron-containing cold material, carbonaceous material and oxygen into a converter in the presence of the molten iron of >=3.7% [C] and melting the iron-containing cold material, while lowering [C] of the molten iron to 3.0-3.5% at the initial stage during melting period of the iron-containing cold material by controlling the carbonaceous material supplying speed, the iron-containing cold material is melted. The [C] in the molten iron is melted while controlling to 3.0-3.5% over the large part of the melting period and further, melted while increasing to >=3.7% at the end stage of the melting period. In this way, the controlling target upper limit of [C] in the melting period of the iron-containing cold material while controlling the [C] in the molten iron to 3.0-3.5%, is decided according to the carbonaceous material condition and the iron-containing cold material is melted with the upper limit [C].

6. 发明专利

JPH093521A NOZZLE FOR BLOWING POWDER 失效
公开(公告)号：JPH093521A
公开(公告)日：1997-01-07
申请号：JP15147495
申请日：1995-06-19
申请人： NIPPON STEEL CORP
发明人： AOKI RIICHI , FUKUDA KAZUHISA , NOBEMOTO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： C04B37/02 , C21C5/48
摘要： PURPOSE: To provide a nozzle for blowing powder wherein an inside surface of internal pipe constituting the nozzle have excellent wear resistance and strong mechanical strength and that wherein each layer of the internal pipe is stuck rigidly even in the use. CONSTITUTION: The nozzle has three layers structure wherein in order from the inside surfaces, the inside layer of burnt ceramic, the intermediate layer of cushioning material and the outside layer of flame retardant metal are laminated and is the nozzle for blowing powder wherein each part of the intermediate layer is embedded into the outside groove disposed on the outside face of the inside layer and the inside groove disposed on the inside face of the outside layer. Or, the nozzle has three layers structure wherein in order from the inside surface, the inside layer of burnt ceramic, the intermediate layer of cushioning material and the outside layer of flame retardant metal are laminated and is the nozzle for blowing powder wherein an attaching pin made of the same quality of the material with the external layer is inserted and fixed into an attaching hole passing through the external layer and the intermediate layer, and passing to and that not passing through the inside surfaces of the internal layer.

7. 发明专利

JP2006052469A Nozzle for injecting powdery material 有权
标题翻译：用于注射粉末材料的喷嘴
公开(公告)号：JP2006052469A
公开(公告)日：2006-02-23
申请号：JP2005221503
申请日：2005-07-29
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： AOKI RIICHI , FUKUDA KAZUHISA , NOBEMOTO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： C21C5/48 , C21C7/072 , F27D3/18
摘要： PROBLEM TO BE SOLVED: To provide a nozzle for injecting powdery material with which the inner surface of a inner tube has excellent wear resistance and large mechanical strength and each layer in the inner tube constituting the nozzle is firmly stuck even during using.
SOLUTION: In the nozzle having three-layer structure laminating an inner layer composed of burnt ceramics, an intermediate layer composed of buffering material and an outer layer composed of fire-resistant metal, the nozzle for injecting the powdery material is characterized by embedding a part of the intermediate layer into an outer peripheral groove arranged at the outer surface of the inner layer and an inner peripheral groove arranged at the inner surface of the outer layer, respectively, and the nozzle has the three-layer structure, that is, from the inner surface side, in order, the inner layer composed of the burnt ceramics, the intermediate layer composed of the buffering material and the outer layer composed of the fire-resistant metal, are laminated. Further, this nozzle for injecting the powdery material inserts and fixes a fitting pin having the same material as the outer layer into a fitting hole. which penetrates the outer layer and the intermediate layer, and does not penetrate to the inner surface of the inner layer.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于注入粉末材料的喷嘴，内管的内表面具有优异的耐磨性和大的机械强度，并且构成喷嘴的内管中的每一层即使在使用期间也被牢固地粘住。解决方案：在具有三层结构的喷嘴中，层叠由烧焦陶瓷构成的内层，由缓冲材料构成的中间层和由耐火金属构成的外层，用于注入粉末状材料的喷嘴的特征在于将中间层的一部分嵌入设置在内层的外表面的外周槽和布置在外层的内表面的内周槽，并且喷嘴具有三层结构，即从内表面侧依次层叠由烧结陶瓷构成的内层，由缓冲材料构成的中间层和由耐火金属构成的外层。此外，用于注入粉末材料的喷嘴将具有与外层相同材料的装配销插入并固定到装配孔中。其穿透外层和中间层，并且不渗透到内层的内表面。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JPH10265820A METHOD FOR MELTING SCRAP AND LANCE FOR MELTING SCRAP 失效
公开(公告)号：JPH10265820A
公开(公告)日：1998-10-06
申请号：JP9003697
申请日：1997-03-26
申请人： NIPPON STEEL CORP
发明人： OGAWA YUJI , KITAMURA SHINYA , NAITO KENICHIRO , ONUKI KAZUO , IDE KAZUO , KUMAZAWA HIROYUKI , FUKUDA KAZUHISA , NAKA HIROTOKU
IPC分类号： C21C5/28 , C21C5/46
摘要： PROBLEM TO BE SOLVED: To provide a method which obtains high carbon content molten iron by efficiently blowing under a low unit requirements of oxygen and carbonaceous material, and high conducting efficiency, and provide a lance therefor, at the time of melting iron scrap by using the carbonaceous material as the heat source. SOLUTION: In the scrap melting method using a combination-blown converter type vessel, the iron scrap is charged into the vessel, in which molten seed metal exists. The slag 16 quantity in the furnace is made to 100-400 kg/ton of molten iron 14 in the furnace, and the carbonaceous material 17 quantity in the slag 16 is held to 10-30% of the slag quantity. One or more items among the height of a topblown lance 12, the structure of a lance nozzle and top-blown oxygen jetting speed are adjusted so that the ratio Ls /Lso of the slag recessed depth La and the slag 16 thickness Lso with the top-blown oxygen jet becomes in the range of 0.3-0.7, and while blowing the oxygen, the carbonaceous material 17 in the furnace is burnt and also, one or more kinds among the bottom-blown gas flowing rate, kind of gas and iron oxide supplying speed are adjusted so that slag stirring index I becomes 0.6-1.5.

9. 发明专利

JP2001355014A METHOD FOR MELTING IRON-CONTAINING COLD MATERIAL 失效
公开(公告)号：JP2001355014A
公开(公告)日：2001-12-25
申请号：JP2000176925
申请日：2000-06-13
申请人： NIPPON STEEL CORP
发明人： KAMEI KOICHI , YAMAMOTO HIROAKI , KUMAZAWA HIROYUKI , TSUJI TAKASHI , ONUKI KAZUO
IPC分类号： C22B9/16 , C21B11/00 , C21C5/28 , C21C5/35
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing the growth of material stuck to a top-blown lance in melting of an iron-containing cold material by using a converter. SOLUTION: In the melting method of the iron-containing cold material in molten iron continuously remaining system by using the converter having basic refractory structure in which the seed molten iron exists, basicity before tapping the molten iron is regulated to 1.1-1.4. The mixture of pulverized fine coal and lime powder containing 5-15 wt% pulverized fine coal as the whole or the main part is supplied by bottom blowing.

10. 发明专利

JPH1036907A METHOD FOR CONTINUOUSLY MEASURING DUST GENERATED IN CONVERTER 失效
公开(公告)号：JPH1036907A
公开(公告)日：1998-02-10
申请号：JP19244296
申请日：1996-07-22
申请人： NIPPON STEEL CORP
发明人： ONUKI KAZUO , NAGAHAMA HIROSHI , TSUJI TAKASHI , KUMAZAWA HIROYUKI
IPC分类号： C21C5/38
摘要： PROBLEM TO BE SOLVED: To enable a simple continuous measurement by projecting ultrasonic wave into dust collected water in a prescribed dust collecting water passage and detecting the dust generating speed from the damping factor. SOLUTION: A large part of the generated dusts in a converter is removed into a wet type dust collector, and since the flowing speed of dust collected water 12 in the dust collecting water passage is sufficiently high, nearly all the dusts are uniformly dispersed. Therefore, the variation in the dust concn. in the exhaust gas from the converter can be grasped by measuring the particle concn. in the dust collected water at the arbitrary position of the water passage. Then, an ultrasonic sensor is dipped into the dust collected water 12 to measure the particle concn. In a vibrator 13 for ultrasonic wave, ultrasonic wave signal of a prescribed frequency and a prescribed strength is transmitted from a vibrator 16 and the ultrasonic wave damped with the solid particles in the dust collected water 12 is received with a receiver 14 and recorded as an electric signal through a signal converter 17. On the other hand, there is a good corresponding relation between the ultrasonic wave sensor detected value and the dust concn., and since the flow rate of the dust collected water is always known, the dust generating speed can very accurately be estimated by using this flow rate and the sensor detected value.

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