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1. 发明授权

US5547489A Process for producing low-carbon chromium-containing steel 失效
标题翻译：低碳含铬钢生产工艺
公开(公告)号：US5547489A
公开(公告)日：1996-08-20
申请号：US445947
申请日：1995-05-22
申请人： Yoshio Inagaki , Motoshi Shinkai , Masahide Tsuno , Akihiro Nagatani
发明人： Yoshio Inagaki , Motoshi Shinkai , Masahide Tsuno , Akihiro Nagatani
IPC分类号： C21C5/28 , C21C5/30 , C21C7/068 , C21C7/10
CPC分类号： C21C5/30 , C21C7/0685 , C21C7/10
摘要： In the production of stainless steel it is aimed at to depress the highest temperature reaching during refining the molten steel with keeping the necessary tapping temperature so as to prolong the life of refractory materials of the refining furnace. After carrying out decarburization treatment under atmospheric pressure in a refining furnace by blowing an oxygen-containing gas into molten steel, further decarburization of the molten steel and reduction of chromium oxides is carried out under stirring by blowing a non-oxidizing gas under a reduced pressure, and then, reducing agent is charged into the furnace to reduce chromium oxides under keeping the reduced pressure. At the above atmospheric pressure operation total quantity of the oxygen gas blown is smaller than in a conventional process, while at the final stage of the reduced pressure operation an oxygen-containing gas is blown again in the quantity which is equivalent to the balance of the quantity of oxygen gas usually blown in the conventional process and the quantity of oxygen gas blown at the above atmospheric pressure operation so as to cause heat generation by oxidation reaction of chromium thereby increasing molten steel temperature to a necessary temperature with anticipation of subsequent temperature decrease.
摘要翻译：在不锈钢的生产中，旨在降低在精炼钢水期间达到的最高温度，同时保持必要的出钢温度，以延长精炼炉耐火材料的使用寿命。在精炼炉中通过将含氧气体吹入钢水中进行大气压下的脱碳处理后，通过在减压下吹入非氧化性气体，在搅拌下进一步对钢水进行脱碳，还原铬氧化物，然后将还原剂装入炉中以在保持减压的同时还原氧化铬。在上述大气压力运行中，吹入的氧气的总量比常规方法小，而在减压运行的最后阶段，含氧气体再次以等于通常在常规方法中吹入的氧气量和在上述大气压力下吹入的氧气量操作，从而通过铬的氧化反应产生热量，从而将钢水温度升高到必要温度，并预期随后的温度降低。

2. 发明授权

US5968230A Method and furnace for disposal of steel-making waste, and operating method of the furnace 失效
公开(公告)号：US5968230A
公开(公告)日：1999-10-19
申请号：US200956
申请日：1998-11-30
申请人： Tetsuo Okamoto , Motoshi Shinkai
发明人： Tetsuo Okamoto , Motoshi Shinkai
IPC分类号： C21B3/04 , C21B3/06 , C22B7/02 , C22B7/04 , F27B3/06 , F27B3/18 , F27B3/19 , F27B3/20 , F27D99/00
CPC分类号： F27D99/0033 , C21B3/04 , C21B3/06 , C22B7/02 , C22B7/04 , F27B3/065 , F27B3/18 , F27B3/19 , F27B3/205 , Y02P10/212 , Y02W30/542 , Y02W30/543 , Y10S75/961
摘要： A melting furnace for reforming steel-making slag so as to be available, for example, to roadbed ballast by mixing steel-making dust with the slag in molten states, which is provided with a fuel oxygen burner for melting the slag and the dust, a slag charging port for charging the slag in molten state into the furnace, a dust feeder for supplying the dust into the furnace, a slag feeder for supplying the slag in powdered state into the furnace, a storage portion for storing a molten mixture of the slag and the dust in a quantity corresponding to a tilting angle of the furnace body and an outlet port for discharging the molten mixture, and is possible to dispose the slag efficiently whether the slag is in the powdered or molten state.

3. 发明授权

US5876483A Method and furnace for disposal of steel-making waste, and operating method of the furnace 失效
标题翻译：炼钢废物处理方法和炉子，炉的操作方法
公开(公告)号：US5876483A
公开(公告)日：1999-03-02
申请号：US568120
申请日：1995-12-06
申请人： Tetsuo Okamoto , Motoshi Shinkai
发明人： Tetsuo Okamoto , Motoshi Shinkai
IPC分类号： C21B3/04 , C21B3/06 , C22B7/02 , C22B7/04 , F27B3/06 , F27B3/18 , F27B3/19 , F27B3/20 , F27D99/00 , C22B19/00
CPC分类号： F27D99/0033 , C21B3/04 , C21B3/06 , C22B7/02 , C22B7/04 , F27B3/065 , F27B3/18 , F27B3/19 , F27B3/205 , Y02P10/212 , Y02W30/542 , Y02W30/543 , Y10S75/961
摘要： A melting furnace for reforming steel-making slag so as to be available, for example, to roadbed ballast by mixing steel-making dust with the slag in molten states, which is provided with a fuel oxygen burner for melting the slag and the dust, a slag charging port for charging the slag in molten state into the furnace, a dust feeder for supplying the dust into the furnace, a slag feeder for supplying the slag in powdered state into the furnace, a storage portion for storing a molten mixture of the slag and the dust in a quantity corresponding to a tilting angle of the furnace body and an outlet port for discharging the molten mixture, and is possible to dispose the slag efficiently whether the slag is in the powdered or molten state.
摘要翻译：一种用于重整炼钢渣的熔炉，例如通过将炼钢粉末与炉渣熔融混合而获得，例如设置有用于熔化炉渣和粉尘的燃料氧燃烧器，用于将熔融状态的炉渣充入炉内的炉渣收集口，用于将粉尘供给到炉内的送粉器，用于将粉末状态的炉渣供给到炉内的炉渣给料器，炉渣和与炉体的倾斜角度相对应的粉尘和用于排出熔融混合物的出口，并且可以有效地处理炉渣是否处于粉末状或熔融状态。

4. 发明授权

US5324342A Method of refining molten chrome steel 失效
标题翻译：熔炼铬钢的方法
公开(公告)号：US5324342A
公开(公告)日：1994-06-28
申请号：US866949
申请日：1992-04-09
申请人： Hiroshi Mori , Motoshi Shinkai , Junichi Tsubokura
发明人： Hiroshi Mori , Motoshi Shinkai , Junichi Tsubokura
IPC分类号： C21C5/30 , C21C5/00 , C21C7/00 , C21C7/068 , C21C7/10 , C21C7/06
CPC分类号： C21C5/005 , C21C7/0685
摘要： Mixed gas of nonoxidizing gas and oxygen is blown into molten chrome steel in a vessel. The molten chrome steel is stirred by the gas and is decarbonized by the oxygen in the gas while being stirred. After the carbon potential in the molten chrome steel has been lowered, the pressure inside the vessel is reduced and the nonoxidizing gas alone is blown as the gas. Bubbles of the gas blown into the molten chrome steel become large on account of reduced pressure and exhibit sufficient stirring function. Consequently, the molten chrome steel is effectively stirred and the decarbonizing reaction is prompted.
摘要翻译：将非氧化气体和氧气的混合气体吹入容器内的熔融铬钢中。熔融的铬钢被气体搅拌，并在被搅拌的同时通过气体中的氧脱碳。在熔融铬钢中的碳势已经降低之后，容器内的压力降低，单独的非氧化气体作为气体被吹送。由于压力降低，吹入熔融铬钢的气体的气泡变大，具有充分的搅拌功能。因此，有效地搅拌熔融铬钢，促进脱碳反应。

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