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1. 发明专利

JPS535014A PRODUCTION OF SELFFFLUXING PELLET OF IRON ORE FOR DIRECT REDUCTION PROCESS 失效
公开(公告)号：JPS535014A
公开(公告)日：1978-01-18
申请号：JP8054576
申请日：1976-07-06
申请人： KOBE STEEL LTD
发明人： FUJITA ISAO , ONODA MAMORU , KANEKO DENTAROU , KIMURA YOSHIO , ASHINAGA TAKEHIKO
IPC分类号： C22B1/14 , C22B1/24
摘要： PURPOSE:To produce the self-fluxing pellet which does not stick mutually by being molten in the furnace and has a high reducibility, by regulating the basicity to 0.1 - 3.0 by the addition of calcareous components to the fine powder of iron ore, when the reduced is produced by reducing the iron ore in a shaft furnace.

2. 发明专利

JPS59123728A Manufacture of briquette containing carbonaceous material 失效
标题翻译：含有炭黑的材料的制造
公开(公告)号：JPS59123728A
公开(公告)日：1984-07-17
申请号：JP23465882
申请日：1982-12-27
申请人： Kobe Steel Ltd
发明人： NOZAKI TERUHIKO , KOIZUMI HIDEO , NISHIDA REIJIROU , KANEKO DENTAROU
IPC分类号： C22B1/14
摘要： PURPOSE: To manufacture a starting material for iron manufacture having strength and reducibility and causing hardly rolling in a furnace by mixing fine iron ore and a carbonaceous material with a binder under specified conditions, press-molding the mixture into briquettes, and solidifying the briquettes by heating.
CONSTITUTION: Cement free from sulfur or a heat curing agent is added to a mixture of fine iron ore contg. 60W70% grains of ≤about 44μm grain size with a carbonaceous material almost free from ash and sulfur. They are kneaded, and the kneaded material is press-molded into briquettes with a briquetting machine. The briquettes are solidified by heating at ≤about 500°C. The resulting briquettes hold proper strength in an iron manufacturing furnace and has high reducibility at low and high temps. Since the briquettes are not spherical, they hardly roll in the furnace.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了制造具有强度和还原性的铁制原料，在特定条件下，通过将细铁矿石和碳质材料与粘合剂混合，在炉内难以轧制，将混合物压制成块状，并将该团块固化加热。构成：将不含硫或热固化剂的水泥加入到细铁矿石混合物中。 60-70％的颗粒大小约为44μm，碳质材料几乎不含灰分和硫。将它们捏合，并用压块机将捏合的材料压制成块。通过在<=约500℃加热而将团块固化。所得到的团块在铁制造炉中保持适当的强度，并且在低温和高温下具有高的还原性。由于团块不是球形，它们几乎不在炉中滚动。

3. 发明专利

JPS54134012A IRON MAKING BY A DIRECT METHOD 失效
公开(公告)号：JPS54134012A
公开(公告)日：1979-10-18
申请号：JP4243978
申请日：1978-04-10
申请人： KOBE STEEL LTD
发明人： KANEKO DENTAROU , ONODA MAMORU , KIMURA YOSHIO , INADA YUTAKA , TOMITA MASAHIRO
IPC分类号： C21B13/00 , C21B13/02 , C21B13/14
摘要： PURPOSE:To manufacture reduced iron effectively and economically by directly utilizing methane as a reducing gas. CONSTITUTION:At the first reducing stage, reduction of iron, having a reduction rate of 30 to 80%, is made at more than 950 deg.C, preferably 1000 to 1200 deg.C, by using a gas containing 15 to 40% CH4. Then, the second reduction stage is entered, where reduction is made at less than 1000 deg.C, preferably approx. 750 to 850 deg.C, by using the usual shaft furnace reducing gas composed mainly of CO and/or H2, at which the rate of reduction reaches approx. 95 to 98% usually. Thus, CH4 is used almost for reduction reaction of iron and also a circulating system for waste gas is employed, thus reducing the consumption of fuel.

4. 发明专利

JPS5493617A PRETREATING METHOD FOR DIRECT IRON MAKING RAW METERIALS 失效
公开(公告)号：JPS5493617A
公开(公告)日：1979-07-24
申请号：JP72678
申请日：1978-01-06
申请人： KOBE STEEL LTD
发明人： KANEKO DENTAROU , KIMURA YOSHIO , ASHINAGA TAKEHIKO
IPC分类号： C22B1/00 , C21B13/00
摘要： PURPOSE:To stabilize the condition of a direct iron making reduction furnace by covering the surface of direct iron making raw materials with MgO, CaO, carbon powder, etc. to prevent occurence of clustering in the furnace. CONSTITUTION:Direct iron making raw materials 3 are dropped onto endless band drier 1 from hopper 2 and coveyed. The surface of materials 3 is sprayed with a suspension, light oil, heavy oil, etc. each contg. Ca(OH)2, Mg(OH)2, carbon powder, etc. from spray nozzle 4. Hot air is fed to hood 8 above materials 3 from hot air blast pipe 7 to dry the materials at 150-500 deg.C. Thus, a film of 0.05-2% CaO, MgO or carbon substance is formed on each surface of the raw granules, and the film prevents occurence of clustering by which the granules are sticked to each other in a direct reduction furnace. Accordingly, irregular dropping of raw materials is prevented causing unstable condition of the furnace and lowering of productivity.

5. 发明专利

JPS5834114A MANUFACTURE OF REDUCED IRON 失效
公开(公告)号：JPS5834114A
公开(公告)日：1983-02-28
申请号：JP13178381
申请日：1981-08-21
申请人： KOBE STEEL LTD
发明人： ARIKAWA MASAYASU , MORI KENJI , NARITA KIICHI , KANEKO DENTAROU , KAMIMURA NOBUO , MIYAZAKI KAZUHIRO
IPC分类号： C21B13/00
摘要： PURPOSE:To expand width of utilized hydrocarbon, to manufacture reduced gas at a low cost and easily, and to realize high temperature reduction, by placing in series a spare reducing furnace of a fluid layer system, a gas reforming furnace and a reducing furnace, and making iron ore grains and hydrocarbon flow through in order. CONSTITUTION:Iron ore grains are heated by a heater 1, and after that, are fed to a spare reducing furnace 2, and are brought into contact with hydrocarbon preheated to such an extent as it is not decomposed, by a preheater 5, and circulating gas containing oxidizing gas such as CO2, H2O, etc., which has passed through a heater 21 from a line 12. Subsequently, a part of the hydrocarbon is decomposed and becomes reduced gas, and a part by-produces C and sticks onto the surface of iron ore grains, and the iron ore grains are prereduced. The C stuck grains are fed to a gas reforming furnace 3 together with decomposed gas which has passed through a purifying device 18, and a part of reduced iron of a reducing furnace 4, and the decomposed gas is reformed to reduced gas mainly consisting of CO, H2, etc. This reduced gas is made to pass through a heater 22, also iron ore and the reduced iron which has been partially oxidized are fed to the furnace 4 from the furnace 3 and are made to contact with each other, and reduced iron is generated, and its waste gas is fed to the furnace 2.

6. 发明专利

JPS5776114A Direct reduction type steel processing 失效
标题翻译：直接还原型钢加工
公开(公告)号：JPS5776114A
公开(公告)日：1982-05-13
申请号：JP2795481
申请日：1981-02-26
申请人： Kobe Steel Ltd
发明人： AOKI MAMORU , TOMITA MASAHIRO , SAKO HIRONOBU , KANEKO DENTAROU , ISHII YOSHITOMO , SHIMAZAKI KATSUNORI , SOGA KAZUYA
IPC分类号： C21B13/00
CPC分类号： Y02P10/143 , Y02P10/212
摘要： PURPOSE: To reform exhaust gas into reduction gas easily without segregation of carbon by preheating exhaust gas beforehand in case of generating reduction gas for the solid phase reduction of the iron ore in the reduction furnace by reforming reaction of natural gas and exhaust gas from the reduction furnace.
CONSTITUTION: In manufacturing the sponge iron by direct solid phase reduction of the iron ore in the reduction shaft furnace 1, after exhaust gas from the reduction furnace is cooled, removed from the dust and dehumidified by the scrubber 2, a part b' is made into the fuel for the reformer 3 and the remainder is fed to the high temperature heat exchanger 4, heated at 750W850°C. The preheated exhaust gas C is put in a high speed mixer 6 and mixed with natural gas d, and mixed gas e is fed to the reformer 3. In this case 1pts.wt. of exhaust gas is mixed with 0.2W0.25pts. wt. of natural gas, reformed in the reformer 3 at 850W950°C and fed to the reduction furnace as reduction gas f. Because reforming reaction proceeds without segregation of solid carbon, the reformer 3 can be of a small type.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过在还原炉中通过天然气和废气的重整反应产生还原炉中的铁矿石的固相还原产生还原气体的情况下，预先将废气容易地预先排放成还原气体而不会分解碳炉。构成：在还原炉1中通过铁矿石的直接固相还原制造海绵铁时，在来自还原炉的废气被冷却后，从灰尘中除去并通过洗涤器2除湿，制成b'部分进入用于重整器3的燃料中，其余部分被供给到在750-850℃加热的高温热交换器4。将预热废气C放入高速混合器6中并与天然气d混合，将混合气体e供给到重整器3中。在这种情况下为1pts.wt。的废气与0.2-0.25pts混合。重量的天然气，在重整器3中在850-950℃下重整，并作为还原气体f送入还原炉。由于重整反应不进行固体碳的分离，重整器3可以是小型的。

7. 发明专利

JPS55104414A SHAFT FURNACE FOR IRON ORE REDUCTION 失效
公开(公告)号：JPS55104414A
公开(公告)日：1980-08-09
申请号：JP959679
申请日：1979-01-29
申请人： KOBE STEEL LTD
发明人： KOHAMA HIROYUKI , TAMIYA MASARU , MIZUKAMI SHIYUNICHI , KANEKO DENTAROU , KIMURA YOSHIO
IPC分类号： C21B13/02
摘要： PURPOSE:To prevent the formation of clusters and stabilize operations by breaking the plug-flow state which becomes the cause for cluster formation in the region of reducibility 50-70% where cluster formation begins during operation of the shaft furnace for iron core reduction. CONSTITUTION:In direct iron making in the shaft furnace for iron core reduction, the region of the reducibility 50-70% in the furnace is in the plug-flow region PF where cluster rings are likely to form. To avert the cluster rings, the plug-flow state is broken to keep the PF above the 50-70% reducibility region. To this end, the fluid dross region RF is raised to above the 50-70% reducibility region by such a method as a burden feeder 1 or baffle plate 3, mixing vanes 4 to limit the plug-flow region PF to the upper part of the shaft furnace. As a result of this, the ore layers become the fluid dross region where they descend with the mutual rotating or linear relative motion in the region of reducibility 50-70%, whereby the formation of clusters is inhibited and the furnace conditions are stabilized.

8. 发明专利

JPS52155116A REDUCED IRON PREPARATION USING HYDROCARBON GAS AS REDUCING AGENT 失效
公开(公告)号：JPS52155116A
公开(公告)日：1977-12-23
申请号：JP7242276
申请日：1976-06-18
申请人： KOBE STEEL LTD
发明人： FUJITA ISAO , ONODA MAMORU , KANEKO DENTAROU , KIMURA YOSHIO , ASHINAGA TAKEHIKO
IPC分类号： C21B13/00
摘要： PURPOSE:The iron ore direct reduction method which constituted from previous reduction of Fe2O3 in iron ore to FeO by CH4 and the reduction to Fe by CO and H2 formed from CH4 decomposition.

9. 发明专利

JPS5871315A OPERATING METHOD FOR DIRECT IRON MANUFACTURE 失效
公开(公告)号：JPS5871315A
公开(公告)日：1983-04-28
申请号：JP16934581
申请日：1981-10-21
申请人： KOBE STEEL LTD
发明人： KIMURA YOSHIO , FUKUOKA MASAYOSHI , KAMEOKA YOSHIBUMI , TAKENAKA YOSHIMICHI , KANEKO DENTAROU
IPC分类号： C21B13/02 , C21B13/00 , C21B13/04
摘要： PURPOSE:To prevent reduced iron from being made red-hot and ignited and to enhance the production efficiency by reducing iron oxide with a gas at a specified temp. and properly controlling the temp. of reduced iron discharged into the air. CONSTITUTION:Iron oxide is reduced with a gas at 700-1,000 deg.C reduction temp. (Tred.) in a reduction furnace. When the temp. of reduced iron becomes 5X10 Tred. -0.7XTred.+324 deg.C, the reduced iron is discharged from the furnace into the air. By setting the temp., the reduced iron is prevented from being made red- hot and ignited even if piled. Accordingly, safe operation is enabled under easy control without carrying out unnecessary cooling.

10. 发明专利

JPS5871314A CONTINUOUS PRODUCTION OF REDUCED IRON AND DEVICE USED FOR SAID PRODUCTION 失效
公开(公告)号：JPS5871314A
公开(公告)日：1983-04-28
申请号：JP16934481
申请日：1981-10-21
申请人： KOBE STEEL LTD
发明人： KANEKO DENTAROU , TAKENAKA YOSHIMICHI , ASHINAGA TAKEHIKO , SOGA KAZUYA , KAWAGUCHI TAKAMASA
IPC分类号： C21B13/02
摘要： PURPOSE:To decrease the capacity of a modifying furnace and to economize energy consumption in the production of reduced iron by providing a modifying body between the reducing zone and cooling zone of a shaft furnace, and conducting part of furnace top gases and gaseous hydrocarbon through the modifying furnace to the lower part of the reducing zone. CONSTITUTION:A modifying zone 1c is provided between the upper reducing zone 1a and lower cooling zone 1b of a shaft furnace 1 for continuous production of reduced iron. When a reducing gas is introduced from the furnace 2 and reduced iron descends down to the zone 1c, the reduced iron forms counter current against a gaseous mixture of furnace top gases and gaseous hydrocarbon such as natural gas introduced through a heater 5. The gaseous mixture receives the catalytic effect of the reduced iron and is converted to a reducing gas by the reactions experssed by the formulasI, II. Thereafter the reduced iron is cooled in the zone 1b and is then discharged from the furnace. The furnace top gases are fed through a dehumidifier 6 and conduits 3, 3' for furnace top gases are cyclically used.

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