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公开(公告)号：US4047707A
公开(公告)日：1977-09-13
申请号：US694413
申请日：1976-06-09
CPC分类号： C21C5/34
摘要： An improvement in the refining of molten metals in a converter by means of oxygen introduced into the metal through tuyeres which include two concentric pipes, oxygen being passed into the melt through the central pipe and a protective fluid being passed into the melt as a sheath or screen around the oxygen, through the clearance space between the two pipes. In the present invention two tuyeres, disposed horizontally and each passing through the convertor sidewall permit refining to be accomplished without any slopping or splashing of the melt and with only minor wear of the convertor lining.
摘要翻译： 改进了转炉中的熔融金属的精炼，其中通过包括两个同心管的风嘴将金属引入金属中，氧气通过中心管道进入熔体，保护性流体作为护套进入熔体， 屏幕周围的氧气，通过两个管道之间的间隙。 在本发明中，水平设置并且各自通过转换器侧壁的两个风口允许完成精炼，而不会使熔体发生任何喷溅或飞溅，并且仅具有转子内衬的微小磨损。
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公开(公告)号：US4249719A
公开(公告)日：1981-02-10
申请号：US602870
申请日：1975-08-07
CPC分类号： C21C5/48 , Y02P10/143
摘要： A tuyere for the injection of both a refining gas such as oxygen into a melting or refining vessel, and a fluid protective medium such as a hydrocarbon gas or a liquid surrounding the injected refining gas, in which there is a solid center in the pipe through which the refining gas is suplied so that the refining gas enters the refining vessel as an annulus around which the protective fluid is disposed.The tuyere is installd in the refractory lining of the refining vessel and the fluids passing into the vessel through the tuyere are proportioned so that burning back of the tuyere and erosion or wear of the lining take place at the same rate.The protective medium cools the tuyere and avoids reactions between the refining gas and the tuyere material.
摘要翻译： 用于将精炼气体如氧气注入熔融或精炼容器的风口，以及流体保护介质，例如烃气体或围绕注入的精炼气体的液体，其中在管道中存在固体中心 精炼气体被稀释，使得精炼气体作为环状物进入精炼容器，保护流体围绕该环空设置。 将风口安装在精炼容器的耐火衬里中，并且通过风口进入容器的流体成比例，使得风口的燃烧和衬里的侵蚀或磨损以相同的速率进行。 保护介质冷却风口并避免精炼气体和风口材料之间的反应。
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公开(公告)号：US3938790A
公开(公告)日：1976-02-17
申请号：US153277
申请日：1971-06-15
CPC分类号： C21C5/34
摘要： Pig-iron is refined into steel by blowing oxygen and a protective screen of an encasing gas through injecting means located at or near the bottom of a converter containing a melt of molten metal. The encasing gas while protecting the injecting means, allows it to be consumed at substantially the same rate as the bottom of the converter so that the injecting means is not left projecting from the bottom of the converter. The encasing gas can be one which is inert to the melt or the metal of the injecting means or both, or it can be a gas which reacts sluggishly with the melt or the material of the oxygen feed pipe or both. Desirably, the oxygen jet is circular in cross-section and the encasing gas is in the form of a concentric jet.A converter for carrying out the method is made up of a pear-shaped sheet-steel casing having a refractory lining and an inserted bottom provided with nozzles in the form of metal tubes for the oxygen and encasing gas. Preferably, a substantial portion (for example about half) of the converter bottom is free of nozzles. The nozzles can be arranged in groups and there can be rows running parallel with the tilting axis of the converter. The nozzles may also be arranged to cause circulation of the molten metal in the converter. The nozzles can be constructed to provide for swirling movement of the encasing gas. Examples of encasing gas which may be used are hydrogen, nitrogen, noble-gases, carbon monoxide, carbon dioxide, ammonia, hydrogen-fluoride, furnace-mouth gas, coke-oven gas, natural gas and other gases containing hydrocarbons.
摘要翻译： 生铁通过吹入氧气和通过位于包含熔融金属熔体的转炉底部或附近的注入装置而被包裹气体而被精炼成钢。 在保护喷射装置的同时，封装气体能够以与转炉底部基本相同的速度消耗，从而喷射装置不会从转炉的底部突出。 封装气体可以是对熔体或注入装置的金属或两者都是惰性的气体，或者它可以是与熔体或氧气进料管的材料或两者都缓慢反应的气体。 期望地，氧气射流是横截面为圆形，并且包围气体为同心射流的形式。
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4.发明授权
公开(公告)号：US3950161A
公开(公告)日：1976-04-13
申请号：US494678
申请日：1974-08-02
CPC分类号： C21C5/04
摘要： An increase in the life of basic refractory linings in hearth type refining furnaces and a decrease in tap-to-tap time is achieved by the use of at least one refining tuyere which consists of two concentric pipes. The central pipe feeds oxygen into the melt below the bath surface, and a hydrocarbon stream surrounds the oxygen being fed into the bath, the hydrocarbon flowing in the space between the two pipes. Preferably the tuyere is embedded in the furnace backwall and is approximately horizontal and is directed toward the center of the hearth. By use of the double tuyere, oxygen can be used for refining without experiencing excessive refractory wear.
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公开(公告)号：US4062657A
公开(公告)日：1977-12-13
申请号：US684330
申请日：1976-05-07
CPC分类号： C21C5/34 , C10J3/46 , C10J3/57 , C10J3/723 , C21C5/48 , C10J2300/093 , C10J2300/0956 , C10J2300/0959 , C10J2300/0996 , C10J2300/1807
摘要： This application describes a process and apparatus for gasifying sulphur bearing coal in a molten iron bath which is covered with a sulphur absorbing slag. In order to make the process practical, the hot liquid slag is transferred to a second vessel in which it is desulfurized by contact with an oxygen containing gas, and then returned as hot liquid slag to the iron bath for reuse.
摘要翻译： 本申请描述了一种在硫磺吸收炉渣覆盖的铁水浴中气化含硫煤的方法和装置。 为了使该方法可行，将热液体渣转移到第二容器中，其中通过与含氧气体接触将其脱硫，然后作为热液体渣返回到铁浴中以供重新使用。
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公开(公告)号：US3932172A
公开(公告)日：1976-01-13
申请号：US315377
申请日：1972-12-15
IPC分类号： C21C5/34
CPC分类号： C21C5/34
摘要： Pig-iron is refined into steel by blowing oxygen and a protective screen of an encasing gas through injecting means located at or near the bottom of a converter containing a melt of molten metal. The encasing gas while protecting the injecting means, allows it to be consumed at substantially the same rate as the bottom of the converter so that the injecting means is not left projecting from the bottom of the converter. The encasing gas can be one which is inert to the melt or the metal of the injecting means or both, or it can be a gas which reacts sluggishly with the melt or the material of the oxygen feed pipe or both. Desirably, the oxygen jet is circular in cross-section and the encasing gas is in the form of a concentric jet.A converter for carrying out the method is made up of a pear-shaped sheet-steel casing having a refractory lining and an inserted bottom provided with nozzles in the form of metal tubes for the oxygen and encasing gas. Preferably, a substantial portion (for example about half) of the converter bottom is free of nozzles. The nozzles can be arranged in groups and there can be rows running parallel with the tilting axis of the converter. The nozzles may also be arranged to cause circulation of the molten metal in the converter. The nozzles can be constructed to provide for swirling movement of the encasing gas. Examples of encasing gas which may be used are hydrogen, nitrogen, noble-gases, carbon monoxide, carbon dioxide, ammonia, hydrogen-fluoride, furnace-mouth gas, coke-oven gas, natural gas and other gases containing hydrocarbons.
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公开(公告)号：US4052197A
公开(公告)日：1977-10-04
申请号：US661061
申请日：1976-02-24
申请人： Karl Brotzmann , Helmut Knuppel , Paul Rheinlander , Gustav Mahn
发明人： Karl Brotzmann , Helmut Knuppel , Paul Rheinlander , Gustav Mahn
CPC分类号： C21C5/567 , C21C5/34 , C21C5/42 , Y02P10/212
摘要： A process for continuous refining in which liquid pig iron is supplied to a pig iron melt which is at least partially refined while said melt is being intensively agitated, the refining means (preferably oxygen) is introduced into the pig iron melt by means of tuyeres mounted in the refining vessel, and discharging the refining means beneath the surface of thepig iron melt, the tuyeres being positioned and the refining means being furnished so that the kinetic energy of the refining means contributes to the bath agitation. The tuyeres are preferably composite tuyeres like those described in U.S. Pat. Nos. 3,706,549 issued Dec. 19, 1972 and 3,771,998 issued Nov. 13, 1973, for discharging oxygen surrounded by a gaseous and/or liquid hydrocarbon, and possibly lime or other solid powder into the bath.
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公开(公告)号：US4123259A
公开(公告)日：1978-10-31
申请号：US799029
申请日：1977-05-20
IPC分类号： C21C5/34
CPC分类号： C21C5/34 , Y02P10/212
摘要： A procedure is described for supplying thermal energy to a steel melt by burning a fuel in a melt containing at most 0.10% carbon, by means of oxygen. Both the fuel and the oxygen are introduced into the steel melt beneath the surface of the melt. The method permits an increase in the scrap or other iron carriers, (ore, pellets, etc.) which can be processed. Apparatus for carrying out the process is also described.
摘要翻译： 描述了通过用含氧量最多为0.10％的熔体燃烧燃料来向钢熔体提供热能的方法。 燃料和氧气都被引入熔体表面下方的钢熔体中。 该方法允许可以加工的废料或其他铁载体（矿石，丸粒等）增加。 还描述了用于执行该过程的装置。
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