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公开(公告)号：US5198749A
公开(公告)日：1993-03-30
申请号：US768714
申请日：1991-10-28
CPC分类号： G01N15/12 , G01N33/203 , G01N1/12 , G01N1/125 , G01N2001/1006 , G01N2033/0091
摘要： A molten metal inclusion sensor comprises a single use disposable probe which is detachably connected to a support member. The probe may comprise a tube of heat resistant material having an inner electrode mounted on its interior wall and an outer electrode mounted on its exterior wall, the molten metal entering the tube interior through an orifice in its wall past a jet-preventer insert upon its immersion in the molten metal, whereupon the flow of metal with entrained inclusions is monitored by measuring the voltage between the electrodes. Alternatively the tube may be of electrically-conductive heat-resistant material and constitute the inner electrode. The flow may be assisted by a reduced pressure established within the tube, or may be slowed by a positive pressure to maintain the Reynolds number of the flow below 2000. The tube interior is divided by a narrow bore into two compartments so that metal enters one compartment and freezes in the bore so that it cannot enter the second compartment, protecting the vacuum source if provided and establishing the quantity of metal entering the probe. The orifice is closed by a meltable cover and the cover is protected by a meltable shield to enable the probe to be passed through an overlying slag layer without entry of slag to the probe interior. Various suitable materials are disclosed for the electrodes and for the body of the probe which should have a useful life in the bath of about 2 minutes.
摘要翻译： PCT No.PCT / CA90 / 00140 Sec。 371日期1991年10月28日 102（e）日期1991年10月28日PCT 1990年4月27日PCT PCT。 出版物WO90 / 13014 PCT 日期：1990年11月1日。熔融金属夹杂物传感器包括可单独使用的一次性探针，其可拆卸地连接到支撑构件。 探针可以包括耐热材料管，其具有安装在其内壁上的内部电极和安装在其外壁上的外部电极，熔融金属通过其壁中的孔经过其防喷器插入件进入管内部 浸入熔融金属中，通过测量电极之间的电压来监测夹带夹杂物的金属流。 或者，管可以是导电耐热材料并构成内电极。 可以通过在管内建立的减压来帮助流动，或者可以通过正压力来减慢流动，以将流动的雷诺数维持在2000以下。管内部被窄的孔分成两个隔室，使得金属进入一个 隔间并在孔中冻结，使得它不能进入第二隔室，如果提供的话保护真空源并建立进入探头的金属量。 孔口由可熔化的盖子封闭，并且盖子被可熔化的护罩保护，以使得探针能够通过上覆的炉渣层而不进入炉渣到探头内部。 公开了用于电极和探针体的各种合适的材料，其应该在浴中具有约2分钟的使用寿命。
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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：US4389246A
公开(公告)日：1983-06-21
申请号：US290587
申请日：1981-08-06
CPC分类号： C10J3/57 , C10J3/08 , C10J3/74 , C10J2200/152 , C10J2300/0906 , C10J2300/093 , C10J2300/0943 , C10J2300/0946 , C10J2300/0956 , C10J2300/0959 , C10J2300/0969 , C10J2300/0976 , C21C2250/02 , Y10S75/958
摘要： In a process for the 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, 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 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 forming of an adhered mass in the furnace. A stirring gas is blown through a bottom nozzle to stir the molten iron bath.
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形成的热点 通过非浸没式喷枪吹入，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者吹向热点，从而使煤气化。 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， 抑制在炉中形成附着物。 将搅拌的气体吹过底部喷嘴以搅拌铁水浴。
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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
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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公开(公告)号：US5241262A
公开(公告)日：1993-08-31
申请号：US768713
申请日：1991-10-28
CPC分类号： G01N15/12 , G01N15/1218 , G01N2015/1254 , G01N33/206
摘要： A molten metal inclusion sensor intended for "continuous" use in the testing of steel, i.e. a useful life of at least about 30 minutes, comprises a probe which is detachably connected to a water-cooled support member (35). The probe comprises a tube (30) of heat resistant material, preferably silica, having an inner electrode (31) mounted on its interior wall and an outer electrode (32) mounted on its exterior wall, the molten metal entering the tube interior through an orifice (33) upon its immersion in the molten metal, whereupon the flow of metal with entrained inclusions is monitored by measuring the voltage between the electrodes (31, 32). The electrodes (31, 32) are preferably of graphite and are shaped to fit closely against the walls of the part of the tube (30) that is immersed in the metal and are of a material that retains enough mechanical strength to support the tube (30) as the metal is pumped into and out of interior, the metal remaining hot enough for this pumping to occur. The orifice (33) is contoured to produce streamline flow and the Reynolds number of the flow preferably is kept below 2000.
摘要翻译： PCT No.PCT / CA90 / 00141 Sec。 371日期1991年10月28日 102（e）日期1991年10月28日PCT 1990年4月27日PCT PCT。 出版物WO90 / 13015 日期为1990年11月1日。用于“连续”用于钢的测试的熔融金属夹杂传感器，即至少约30分钟的使用寿命，包括可拆卸地连接到水冷支撑构件的探针（ 35）。 探针包括耐热材料（优选二氧化硅）的管（30），其具有安装在其内壁上的内电极（31）和安装在其外壁上的外电极（32），熔融金属通过 孔（33）浸在熔融金属中时，通过测量电极（31,32）之间的电压来监测夹带夹杂物的金属流。 电极（31,32）优选为石墨，并且被成形为紧密地配合在浸入金属中的管（30）的部分的壁上，并且是保持足够的机械强度以支撑管的材料（ 30），当金属被泵送进入和离开内部时，金属保持足够热以进行这种泵送。 孔口33被轮廓化以产生流线，流动的雷诺数优选保持在2000以下。
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公开(公告)号：US4565551A
公开(公告)日：1986-01-21
申请号：US543131
申请日：1983-10-18
CPC分类号： C10J3/57 , C10J3/74 , C10J2200/152 , C10J2300/093 , C10J2300/0943 , C10J2300/0959 , C10J2300/0969 , C10J2300/0976
摘要： A method and apparatus for gasifying a solid carbonaceous material such as coal is disclosed in which powdery coal is top-blown together with oxygen gas and steam onto a molten metal bath through a non-immersing multihole lance, said powdery coal is blown separately from the oxygen gas and steam, and the steam is commingled with the oxygen gas within the lance before they are injected out of the lance.
摘要翻译： 公开了一种用于气化固体碳质材料如煤的方法和装置，其中粉煤与氧气和蒸汽一起通过非浸渍的多孔喷枪一起吹到熔融金属浴上，所述粉煤与 氧气和蒸汽，并且蒸汽在喷射出喷枪之前与矛中的氧气混合。
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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：US4738688A
公开(公告)日：1988-04-19
申请号：US886360
申请日：1986-07-17
CPC分类号： C10J3/57 , C10J2200/152 , C10J2300/093 , C10J2300/0959
摘要： A process including an apparatus for use therein for gasifying a carbonaceous material by means of blowing said carbonaceous material onto a high temperature molten iron bath through a top-blowing lance of the non-immersion type is disclosed. The apparatus comprises a furnace body containing the high temperature molten iron bath, a top-blowing lance of the non-immersion type which is a multi-nozzle lance comprising a central nozzle for blowing the carbonaceous material in a powdery form, a plurality of inner nozzles for blowing a gasifying agent, the inner nozzles for blowing the gasifying agent being positioned surrounding said central nozzle, and another plurality of outer nozzles for blowing an oxidizing gas for secondary combustion of part of the product gas to maintain the molten iron bath temperature at a level high enough to continue the gasification, said outer nozzles being positioned surrounding said plurality of inner nozzles, the axis of each of said outer nozzles being inclined towards the outer periphery at an angle of 20.degree.-60.degree. with respect to the axis of said central nozzle, means for discharging the slag during gasification, and means for recovering the product gas.
摘要翻译： 公开了一种包括其中用于通过非浸入式顶吹喷枪将所述碳质材料吹入高温铁水浴中来使碳质材料气化的装置。 该装置包括一个含有高温铁水槽的炉体，一种非浸入式的顶吹喷枪，它是一种多喷嘴喷枪，包括一个用于吹入粉状的碳质材料的中心喷嘴， 用于吹送气化剂的喷嘴，用于吹送围绕所述中心喷嘴的气化剂的内部喷嘴，以及另外多个外部喷嘴，用于吹送部分产物气体的二次燃烧用氧化气体，以将铁水浴温度保持在 高度足以继续气化的水平，所述外部喷嘴定位在所述多个内部喷嘴周围，每个所述外部喷嘴的轴线相对于所述外部喷嘴的轴线以20°-60°的角度向外周倾斜 所述中心喷嘴，用于在气化期间排出炉渣的装置，以及用于回收产品气体的装置。
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公开(公告)号：US4541617A
公开(公告)日：1985-09-17
申请号：US487566
申请日：1983-04-22
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。
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