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公开(公告)号：US4345746A
公开(公告)日：1982-08-24
申请号：US261509
申请日：1981-05-04
CPC分类号： C21C5/30
摘要： A ferrous melt, e.g. of steel, is refined beneath a slag layer by blowing from above with an oxygen-containing gas through a lance and by bubbling an inert gas through the melt from the bottom. According to the invention, the consistency of the slag layer and/or its level is continuously detected on the one hand and the rate of decarburation of the bath is detected on the other hand and in response to these measurements the volume rate of flow of the bubbling gas is controlled on the one hand to maintain a predetermined spacing of the slag layer from the head of the lance and, on the other hand, a fluid consistency of the slag.
摘要翻译： 亚铁熔体，例如 的钢，通过用含氧气体通过喷枪从上方吹出并通过从底部鼓泡惰性气体通过熔体而在炉渣层下方精炼。 根据本发明，一方面连续地检测出渣层的一致性和/或其水平，另一方面检测到浴的脱饱和速率，并且响应于这些测量，容积的流速 一方面控制鼓泡气体以保持炉渣层与喷枪头部的预定间距，另一方面保持炉渣的流体稠度。
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公开(公告)号：US4325730A
公开(公告)日：1982-04-20
申请号：US204537
申请日：1980-11-06
CPC分类号： C21C5/30
摘要： Slag is conditioned during blowing from above with oxygen of an iron melt by bubbling an inert gas into the melt from the bottom of the crucible in response to measurements made of the flowability of the slag layer and the speed of decarburization.
摘要翻译： 响应于由渣层的流动性和脱碳速度测量，从坩埚的底部向惰性气体中吹入惰性气体至熔体中，从上方吹入炉渣以调节炉渣。
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3.发明授权Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used 失效使用顶部的氧气吹扫坩埚中的金属浴精炼过程
公开(公告)号：US4369060A
公开(公告)日：1983-01-18
申请号：US222512
申请日：1981-01-02
申请人： Paul Metz , Francois Schleimer , Ferdinand Goedert , Lucien Lorang , Romain Henrion , Jean-Claude Grosjean , Guy Denier , Claude Bauler
发明人： Paul Metz , Francois Schleimer , Ferdinand Goedert , Lucien Lorang , Romain Henrion , Jean-Claude Grosjean , Guy Denier , Claude Bauler
摘要： Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used.The invention consists essentially of providing in the bottom (15) of the crucible agitating gas injectors (15) located at least in a peripheral circular ring situated in immediate proximity to the refractory side wall. The injectors are preferably concentrated opposite the journals. Secondary injectors are, also preferably, provided in the bottom zone, intermediate between the ring and the center of the crucible.The invention makes it possible, in relation to the prior injection practice, to reduce the rate of dissolution of the agitating gas in the molten metal and then makes it possible to use a low-cost agitating gas, such as nitrogen, without risk of excessive nitridation of the bath.
摘要翻译： 使用顶部的氧气吹扫坩埚中的金属浴精炼过程。 本发明基本上由在至少位于紧邻耐火材料侧壁的外围圆环中的坩埚搅拌气体喷射器（15）的底部（15）提供。 注射器优选地集中在与期刊相对的位置。 也优选地，二次注射器设置在底部区域中，位于环和坩埚中心之间。 本发明可以相对于现有的喷射实践来降低搅拌气体在熔融金属中的溶解速度，从而可以使用诸如氮气的低成本搅拌气体，而不会有过度的风险 浴的氮化。
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4.发明授权
公开(公告)号：US4349382A
公开(公告)日：1982-09-14
申请号：US144228
申请日：1980-04-28
CPC分类号： C21C5/32 , Y02P10/212
摘要： A process for refining a metal bath in a converter by oxygen blowing, particularly a molten metal liquid bath containing cold, solid substances, notably of scrap. Oxygen is distributed over the surface of the bath, so that there will be an after-combustion of CO released in the course of decarbonization. The thickness and consistency of a slag layer formed over the bath is actively regulated by injecting a rising inert gas through the bottom of the bath. The flow of rising gas may be regulated depending upon the oxygen content in the fumes of the converter, or upon the intensity of emission through the top of an oxygen blowing lance.
摘要翻译： 一种通过吹氧来精炼转炉中的金属浴的方法，特别是含有冷的固体物质，特别是废料的熔融金属液体浴。 氧分布在浴的表面上，从而在脱碳过程中会释放CO的后燃。 通过在浴槽底部喷射上升的惰性气体来积极地调节在浴上形成的炉渣层的厚度和稠度。 上升气体的流动可以根据转炉的烟气中的氧含量或通过氧气喷枪顶部的排放强度来调节。
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公开(公告)号：US4334922A
公开(公告)日：1982-06-15
申请号：US222716
申请日：1981-01-05
申请人： Paul Metz , Francois Schleimer , Lucien Lorang , Ferdinand Goedert , Romain Henrion , Fernand Thill
发明人： Paul Metz , Francois Schleimer , Lucien Lorang , Ferdinand Goedert , Romain Henrion , Fernand Thill
CPC分类号： C21C5/30
摘要： A process for refining a steel melt in a furnace in which a steel melt is formed with a slag layer thereon, the thickness of which can be controlled by passing a stream of inert gas upwardly through the melt, while directing a first stream of oxygen into the melt from a lance positioned above the melt for the top-blowing refining thereof to produce carbon monoxide above the melt and feeding a second stream of oxygen from the lance for the post-combustion of the released carbon monoxide, while monitoring continuously the thickness of the slag layer, the height of the melt, the carbon monoxide post-combustion factor (%CO.sub.2 /%CO+%CO.sub.2) and the speed of decarburization of the melt and controlling the height of the lance above the melt and the discharge rates of total blown oxygen, the second stream of oxygen and the inert gas stream at any given time in accordance with a particular relationship.
摘要翻译： 一种在炉中精炼钢熔体的方法，其中钢熔体在其上形成有炉渣层，其厚度可以通过使惰性气体向上流过熔体而同时将第一氧气流引导到 来自位于熔体上方的喷枪的熔体用于顶吹精炼，以在熔体上方产生一氧化碳，并从喷枪中提供第二氧气流用于释放的一氧化碳的后燃烧，同时连续监测 炉渣层，熔体高度，一氧化碳后燃烧因子（％CO2 /％CO +％CO2）和熔体脱碳速度，并控制熔体上方的喷枪高度和总熔体排放速率 根据特定的关系在任何给定的时间吹入氧气，第二氧气流和惰性气体流。
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公开(公告)号：US3966457A
公开(公告)日：1976-06-29
申请号：US638159
申请日：1975-12-05
申请人： Raymond Limpach , Lucien Lorang
发明人： Raymond Limpach , Lucien Lorang
IPC分类号： C21B5/00
CPC分类号： C21B5/003
摘要： Coal of a granulometry of 0.1 to 20 mm is injected into the blast-pipe manifold surrounding an iron-smelting blast furnace. The temperature of between 900.degree.C and 1300.degree.C in this manifold thermally disintegrates the coal by vaporizing volatile components such as water in the coal and reduces the coal to a mesh size of at most 1 mm. The fine particles of coal so produced are blown into the blast furnace through the tuyeres.
摘要翻译： 将0.1〜20mm的粒度的煤注入围绕铁冶炼高炉的鼓风管内。 在该歧管中，900℃至1300℃之间的温度通过汽化煤中的挥发性成分如水分而使煤分解，并将煤减少到至多1mm的筛目尺寸。 这样生产的煤颗粒通过风嘴吹入高炉。
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