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1. 发明授权

US4541617A Lance structure for oxygen-blowing process in top-blown converters 失效
标题翻译：顶吹转炉中吹氧过程的喷枪结构
公开(公告)号：US4541617A
公开(公告)日：1985-09-17
申请号：US487566
申请日：1983-04-22
申请人： Kohji Okane , Hidemasa Nakajima , Shozo Okamura , Masanobu Sueyasu , Takashi Manago
发明人： Kohji Okane , Hidemasa Nakajima , Shozo Okamura , Masanobu Sueyasu , Takashi Manago
IPC分类号： C21C5/28 , C21C1/02 , C21C5/32 , C21C5/46 , F27D3/18 , B23K37/04
CPC分类号： F27D3/18 , C21C5/4606
摘要： Herein disclosed is a lance structure for use with a top-blown converter. The lance structure is constructed to include a cylindrical sheath having a bottom wall and a flux supply tube disposed at the center of the sheath and defining a passage for carrying slag-forming flux in a powdered form. Further inclusive are a plurality of oxygen supply tubes which are arranged in the sheath and around the flux supply tube and which define oxygen supply passages. From the oxygen supply tubes, there lead a corresponding number of Laval nozzles which have their exits opened in the sheath bottom so that the oxygen gas supplied through the oxygen supply passages may be blown in the form of supersonic jets to penetrate into the molten iron contained in the converter. The flux supply tube is formed with ports which are opened into the Laval nozzles just upstream of the exits thereof to feed the flux together with a carrier gas to the supersonic oxygen jets so that the carrier gas flows may merge into the oxygen jets. Thus, the powdered flux can be uniformly dispersed in the oxygen jets without wearing and damaging the inner walls of the Laval nozzles and can be carried by the jets deeply into the molten iron.
摘要翻译：这里公开了一种用于顶吹转炉的喷枪结构。喷枪结构被构造为包括具有底壁的圆柱形护套和设置在护套中心处的通量供给管，并且限定用于承载粉末形式的成渣助熔剂的通道。进一步包括多个供氧管，其布置在护套中并且围绕焊剂供应管并且限定供氧通道。从供氧管中，引出相应数量的拉瓦尔喷嘴，其出口在鞘底部开口，使得通过供氧通道供应的氧气可以以超音速喷气的形式吹入，以渗透到所含的铁水中在转换器中。助焊剂供应管形成有在其出口的上游开口进入拉瓦尔喷嘴的端口，以将载气与载气一起供给超声波氧气射流，使得载气流可以合并到氧气射流中。因此，粉末焊剂可以均匀地分散在氧气射流中，而不会磨损和损坏拉瓦尔喷嘴的内壁，并且可以通过射流深深地携带在铁水中。

2. 发明授权

US4522650A Process for production of low phosphorus alloy 失效
标题翻译：低磷合金生产工艺
公开(公告)号：US4522650A
公开(公告)日：1985-06-11
申请号：US537025
申请日：1983-09-29
申请人： Hidemasa Nakajima , Shozo Okamura , Masanobu Sueyasu , Sakae Furujho , Kohji Okane , Shoji Anezaki
发明人： Hidemasa Nakajima , Shozo Okamura , Masanobu Sueyasu , Sakae Furujho , Kohji Okane , Shoji Anezaki
IPC分类号： C21B13/00 , C21C5/28 , C21C5/35 , C21C7/00
CPC分类号： C21B13/0013 , C21C5/28 , C21C5/35 , Y02P10/136
摘要： Herein is disclosed a process for producing an alloy of low phosphorus content by means of a furnace equipped with a lance for injection. The process is characterized by producing an alloy of low phosphorus content and at the same time by gasifying the carbonaceous material.The process comprises the steps of:forming a bath of molten metal by pouring a molten metal in the furnace, said molten metal containing not more than 0.040% of phosphorus;injecting by means of said lance into said bath of molten metal a carbonaceous material together with a gasifying agent to gasify the carbonaceous material with the heat of the bath of molten metal and to increase the carbon content of the bath of molten metal, said carbonaceous material containing not more than 0.035% of phosphorus;adding to said bath of molten metal an alloying element to react with the molten metal thereby forming an alloy; andrecovering the formed gas and, at the same time, obtaining the alloy of low phosphorus content.The process is suitable for producing Cr steel, Mn steel and Ni steel.
摘要翻译：本文公开了一种通过装备有注射用喷枪的炉来制造低磷含量的合金的方法。该方法的特征在于生产低磷含量的合金，同时通过气化碳质材料。该方法包括以下步骤：通过将熔融金属倒入炉中而形成熔融金属浴，所述熔融金属含有不超过0.040％的磷; 通过所述喷枪将所述喷枪喷射到所述熔融金属浴中，将碳质材料与气化剂一起用熔融金属浴的热量气化碳质材料并增加熔融金属浴的碳含量，所述碳质材料含磷不超过0.035％向所述熔融金属浴中加入合金元素以与熔融金属反应从而形成合金; 并回收形成的气体，同时获得低磷含量的合金。该工艺适用于生产Cr钢，Mn钢和Ni钢。

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