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公开(公告)号：US09580764B2
公开(公告)日：2017-02-28
申请号：US14351910
申请日：2012-10-16
发明人： Goro Okuyama , Naoki Kikuchi , Yuichi Uchida , Yukio Takahashi , Shingo Sato , Kenji Nakase , Yasutaka Ta , Yuji Miki
CPC分类号： C21C5/32 , C21C1/02 , C21C5/35 , C21C5/4606 , C21C5/462 , C21C5/5217 , C21C7/0037 , F27D2019/0034 , F27D2019/0075 , Y02P10/216
摘要： A top-blowing lance includes a refining oxygen gas blowing nozzle having a plurality of ejection openings through which oxygen gas is blown into an iron bath in a reaction vessel, the ejection openings being disposed along a circular orbit at intervals, and a burner nozzle having an axis coaxial with the central axis of the circular orbit, forming a flame inside the refining oxygen gas blowing nozzle, and having ejection openings for blowing a powder heated by the flame into the iron bath, wherein an indicator A that indicates the positional relationship between the ejection openings of the refining oxygen gas blowing nozzle and the ejection openings of the burner nozzle satisfies the specified conditions.
摘要翻译： 顶吹喷枪包括精炼氧气吹制喷嘴，其具有多个喷射口，氧气被吹入反应容器中的铁浴中，喷射口沿着圆形轨道间隔设置，燃烧器喷嘴具有 与圆形轨道的中心轴线同轴的轴，在精炼氧气吹制喷嘴内形成火焰，并具有用于将由火焰加热的粉末吹入铁浴的喷射口，其中指示器A指示位于 精炼氧气吹出喷嘴的喷射口和燃烧器喷嘴的喷射口满足规定的条件。
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公开(公告)号：US20150020648A1
公开(公告)日：2015-01-22
申请号：US14382720
申请日：2013-03-25
发明人： Kenji Nakase , Yukio Takahashi , Naoki Kikuchi , Goro Okuyama , Shingo Sato , Yuichi Uchida , Yuji Miki
CPC分类号： C21C5/32 , C21C1/025 , C21C5/35 , C21C5/4606 , C21C5/4613 , C21C7/0037 , C21C7/064 , C21C7/068 , C21C7/072 , C21C2250/00 , Y02P10/212
摘要： A method for refining hot metal in a converter using a top-blowing lance having a refining powder supply channel, a combustion oxidizing gas supply channel, and a refining oxidizing gas supply channel that are separate from each other includes supplying at least one of a lime-based flux, iron oxide, and a combustible material as a refining powder from the refining powder supply channel to a surface of the hot metal using a fuel gas or a mixture of the fuel gas and an inert gas as a carrier gas while supplying a combustion oxidizing gas from the combustion oxidizing gas supply channel to form a flame below a leading end of the top-blowing lance, and supplying a refining oxidizing gas from the refining oxidizing gas supply channel to the surface of the hot metal.
摘要翻译： 使用具有分离的精炼粉供给通道，燃烧氧化气体供给通道和精炼氧化气体供给通道的顶吹喷枪，在转炉中精炼热金属的方法包括供给至少一个石灰 的助熔剂，氧化铁和作为精制粉末的可燃材料从精炼粉末供给通道引入到金属的表面，使用燃料气体或燃料气体和惰性气体的混合物作为载气，同时供给 来自燃烧氧化气体供给路径的燃烧氧化气体，在顶吹喷枪前端形成火焰，并将精炼氧化气体从精炼氧化剂气体供给路径供给到金属表面。
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公开(公告)号：US20140298955A1
公开(公告)日：2014-10-09
申请号：US14351910
申请日：2012-10-16
发明人： Goro Okuyama , Naoki Kikuchi , Yuichi Uchida , Yukio Takahashi , Shingo Sato , Kenji Nakase , Yasutaka Ta , Yuji Miki
CPC分类号： C21C5/32 , C21C1/02 , C21C5/35 , C21C5/4606 , C21C5/462 , C21C5/5217 , C21C7/0037 , F27D2019/0034 , F27D2019/0075 , Y02P10/216
摘要： A top-blowing lance includes a refining oxygen gas blowing nozzle having a plurality of ejection openings through which oxygen gas is blown into an iron bath in a reaction vessel, the ejection openings being disposed along a circular orbit at intervals, and a burner nozzle having an axis coaxial with the central axis of the circular orbit, forming a flame inside the refining oxygen gas blowing nozzle, and having ejection openings for blowing a powder heated by the flame into the iron bath, wherein an indicator A that indicates the positional relationship between the ejection openings of the refining oxygen gas blowing nozzle and the ejection openings of the burner nozzle satisfies the specified conditions.
摘要翻译： 顶吹喷枪包括精炼氧气吹制喷嘴，其具有多个喷射口，氧气被吹入反应容器中的铁浴中，喷射口沿着圆形轨道间隔设置，燃烧器喷嘴具有 与圆形轨道的中心轴线同轴的轴，在精炼氧气吹制喷嘴内形成火焰，并具有用于将由火焰加热的粉末吹入铁浴的喷射口，其中指示器A指示位于 精炼氧气吹出喷嘴的喷射口和燃烧器喷嘴的喷射口满足规定的条件。
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公开(公告)号：US11293069B2
公开(公告)日：2022-04-05
申请号：US16955214
申请日：2018-11-08
发明人： Nobuhiko Oda , Goro Okuyama , Shota Amano , Kenji Nakase , Yukio Takahashi , Yuta Hino , Naoki Kikuchi , Yuji Miki
摘要： In a method for oxygen-blowing refining of molten iron, an oxygen-containing gas as a main supply gas is supplied from an inlet side of a blowing nozzle for the oxygen-containing gas passing through an outer shell of the top-blowing lance and blown from the blowing nozzle while a control gas is jetted toward inside of the blowing nozzle for at least part of a period of the oxygen-blowing refining from a spout arranged in a side face of the nozzle at a site where the cross-sectional area of the nozzle minimum takes the minimum in the axial direction of the nozzle or a neighborhood thereof so that at least part of the spout exists in each space formed by dividing into two portions by an arbitrary plane passing through a central axis of the nozzle.
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公开(公告)号：US09957581B2
公开(公告)日：2018-05-01
申请号：US14382720
申请日：2013-03-25
发明人： Kenji Nakase , Yukio Takahashi , Naoki Kikuchi , Goro Okuyama , Shingo Sato , Yuichi Uchida , Yuji Miki
CPC分类号： C21C5/32 , C21C1/025 , C21C5/35 , C21C5/4606 , C21C5/4613 , C21C7/0037 , C21C7/064 , C21C7/068 , C21C7/072 , C21C2250/00 , Y02P10/212
摘要： A method for refining hot metal in a converter using a top-blowing lance having a refining powder supply channel, a combustion oxidizing gas supply channel, and a refining oxidizing gas supply channel that are separate from each other includes supplying at least one of a lime-based flux, iron oxide, and a combustible material as a refining powder from the refining powder supply channel to a surface of the hot metal using a fuel gas or a mixture of the fuel gas and an inert gas as a carrier gas while supplying a combustion oxidizing gas from the combustion oxidizing gas supply channel to form a flame below a leading end of the top-blowing lance, and supplying a refining oxidizing gas from the refining oxidizing gas supply channel to the surface of the hot metal.
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