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公开(公告)号：US4474605A
公开(公告)日：1984-10-02
申请号：US345389
申请日：1982-02-03
申请人： Seiichi Masuda , Yoichi Umeda , Tohru Matsuo , Masayuki Taga , Hidemasa Nakajima
发明人： Seiichi Masuda , Yoichi Umeda , Tohru Matsuo , Masayuki Taga , Hidemasa Nakajima
摘要： A process for refining high-Cr steel, e.g. 13% Cr steel and 18% Cr steel, is disclosed. The process comprises preparing molten iron in a top-and-bottom blowing converter, heating the molten iron to a predetermined temperature, effecting the decarburization of the thus prepared molten iron by blowing oxygen gas through a top lance against the surface of the molten iron to provide a molten steel while, as bottom-blown gas, initially introducing an oxygen-containing gas into the molten steel then changing to an inert gas when the carbon content of said molten steel is reduced to a predetermined level so as to suppress the oxidation of chromium, and tapping the resulting molten steel out of the converter after adjusting the steel composition.
摘要翻译： 一种精炼高Cr钢的方法，例如 13％Cr钢和18％Cr钢。 该方法包括在顶部和底部吹入转炉中制备铁水，将铁水加热到预定温度，通过将氧气通过顶部喷枪吹向铁水表面，从而使由此制备的铁水脱碳，从而 提供钢水，同时作为底吹气体，首先在钢水中引入含氧气体，然后当所述钢水的碳含量降低到预定水平时变为惰性气体，以便抑制氧化 铬，并且在调整钢组合物之后将所得的钢水从转炉中取出。
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公开(公告)号：US4388084A
公开(公告)日：1983-06-14
申请号：US290520
申请日：1981-08-06
申请人： Koji Okane , Shozo Okamura , Masanobu Sueyasu , Seiichi Masuda , Tsutomu Tanaka , Koichi Tanaka
发明人： Koji Okane , Shozo Okamura , Masanobu Sueyasu , Seiichi Masuda , Tsutomu Tanaka , Koichi Tanaka
CPC分类号： C10J3/08 , C10J3/57 , C10J3/74 , C10J2200/152 , C10J2300/0906 , C10J2300/093 , C10J2300/0943 , C10J2300/0946 , C10J2300/0956 , C10J2300/0959 , C10J2300/0969 , C10J2300/0976 , C21C2250/02
摘要： In a process for gasification of solid carbonaceous material such as coal, powdered coal is top-blown onto a molten iron bath stored in a furnace through a non-submerged lance toward a hot spot formed by means of a jet of oxygen and steam top-blown through a non-submerged lance, the coal being blown by means of a carrier gas, and flux is optionally added into the furnace by the lump or blown toward the hot spot, thereby resulting in the coal being gasified. The ratio L/L.sub.o of the depression depth L of the molten iron bath to the molten iron bath depth L.sub.o is maintained from 0.05 to 0.15, and the blowing velocity of the solid carbonaceous material is maintained from 50 to 300 m/sec so as to suppress the formation of an adhered mass on the upper part of the furnace, hood or lance.
摘要翻译： 在煤等固体碳质材料气化的过程中，将粉煤通过非浸没式喷枪向存储在炉中的铁水浴顶吹到通过氧气和蒸汽顶部喷射形成的热点， 通过非浸没式喷枪吹送，煤通过载气吹送，并且任选地通过块将助熔剂加入到炉中或向热点吹入，从而导致煤气化。 铁水槽的凹陷深度L与铁水浴深度Lo的比L / Lo保持在0.05〜0.15，固体碳质材料的吹入速度保持在50〜300m /秒， 抑制在炉子，罩子或喷枪上部形成粘附质量。
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公开(公告)号：US4292073A
公开(公告)日：1981-09-29
申请号：US154216
申请日：1980-05-29
CPC分类号： C21C5/35 , C21C5/32 , Y02P10/212
摘要： A process for making carbon steel and low-alloy steel in a basic oxygen furnace is disclosed, which comprises preparing a molten metal suitable for producing the steel in said basic oxygen furnace, carrying out the top-blowing of oxygen gas and bottom-blowing of carbon dioxide gas and then tapping the resulting molten steel. The top-blowing oxygen gas is injected through a lance onto the molten metal at an outlet velocity of Mach 0.8-2.0.
摘要翻译： 公开了一种在碱性氧炉中制造碳钢和低合金钢的方法，其包括在所述碱性氧炉中制备适于生产钢的熔融金属，进行氧气的顶吹和底吹 二氧化碳气体，然后攻丝所得钢水。 顶吹的氧气通过喷枪以0.8-2.0马赫的出口速度喷射到熔融金属上。
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公开(公告)号：US4456477A
公开(公告)日：1984-06-26
申请号：US498863
申请日：1983-05-27
申请人： Seiichi Masuda , Tohru Matsuo , Yoshimichi Ohkita , Takeo Aoki , Hidemasa Nakajima , Shozo Okamura , Takeyuki Hirata , Shoji Anezaki
发明人： Seiichi Masuda , Tohru Matsuo , Yoshimichi Ohkita , Takeo Aoki , Hidemasa Nakajima , Shozo Okamura , Takeyuki Hirata , Shoji Anezaki
摘要： A process for producing an ultra-low phosphorus steel containing 0.010% or less of phosphorus is disclosed, which comprises charging a desiliconized pig iron into a top- and bottom-blowing oxygen converter, introducing a slag-forming agent in a powdered form onto the molten iron together with the top-blowing oxygen and introducing a bottom-blowing gas selected from the group consisting of an inert gas, nitrogen gas, oxygen gas, carbon monoxide gas, carbon dioxide gas and mixtures thereof during the oxygen top-blowing or during both the oxygen top-blowing and the subsequent tapping.
摘要翻译： 公开了一种含有0.010％以下的磷的超低磷钢的制造方法，其特征在于，将脱硅生铁装入上下吹氧转化器中，将粉末形成剂引入到 熔融铁与顶吹氧气一起引入，并且在氧气吹制期间或在氧气吹入期间引入选自惰性气体，氮气，氧气，一氧化碳气体，二氧化碳气体及其混合物的底吹气体 氧气顶吹和随后的攻丝。
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公开(公告)号：US4290802A
公开(公告)日：1981-09-22
申请号：US154217
申请日：1980-05-29
CPC分类号： C21C5/4606 , C21C5/35
摘要： An oxygen top-blowing steelmaking process is disclosed, which comprises preparing a molten metal suitable for producing steel in a basic oxygen furnace, carrying out the top-blowing and bottom-blowing and then tapping the resulting molten steel. The bottom-blowing is carried out at least partly during the period of time from beginning of blowing to the tapping of the melt and a powder of a slag-forming agent, such as quick lime, limestone, is introduced into the molten metal together with the top-blowing of oxygen jet injected through an oxygen lance so as to form an effective slag at an early stage of refining.
摘要翻译： 公开了一种氧吹风炼钢方法，其包括在碱性氧气炉中制备适合于生产钢的熔融金属，进行顶吹和底吹，然后对所得钢水进行攻丝。 底吹至少部分地在从吹制开始到熔融物出料的时间段内进行，并且诸如生石灰，石灰石的成渣剂粉末与 通过氧枪喷射的氧气喷射的顶吹，以便在精炼的早期阶段形成有效的炉渣。
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