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公开(公告)号：US06120577A
公开(公告)日：2000-09-19
申请号：US47770
申请日：1998-03-25
IPC分类号： C22B1/16 , C21B3/04 , C21B13/00 , C21B13/10 , C22B1/245 , C22B7/00 , C22B7/02 , C22B13/02 , C22B19/30 , C21B11/08 , C22B13/06 , C22B19/04
CPC分类号： C22B19/30 , C21B13/0046 , C21B13/105 , C22B1/245 , C22B7/02 , Y02P10/216 , Y10S75/961
摘要： A process of recovering iron values and separating zinc oxides and other contaminants from steel mill waste metal oxides, such as blast furnace dust, BOF dust, mill scale and oily sludges, characterized by iron metallization levels up to 95% or more and zinc oxide removal in excess of 99%, and including the steps of blending the oxides with coke breeze in an amount sufficient to provide a total carbon content of 16% to 22%, the coke breeze having a particle size of 50% or more plus 60 mesh or larger, briquetting the blend to form briquettes having a thickness ranging from 1/2" to 3/4", and firing the briquettes in a rotary hearth furnace to metallize the iron and evolve zinc and other oxide contaminants.
摘要翻译： 回收铁值并从钢铁废金属氧化物中分离出锌氧化物和其他污染物的方法，如高炉粉尘，BOF粉尘，磨矿规模和油性污泥，铁金属化水平高达95％以上，氧化锌去除 超过99％，并且包括以足以提供总碳含量为16％至22％的量将氧化物与焦炭粉混合的步骤，焦炭微粒的粒径为50％以上加上60目或 较大的压块混合物以形成具有从+ E，fra 1/2 + EE“到+ E，fra 3/4 + EE”的厚度的团块，并且在转底炉中烧制团块以使铁 并发展锌和其他氧化物污染物。
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公开(公告)号：US6016941A
公开(公告)日：2000-01-25
申请号：US59843
申请日：1998-04-14
CPC分类号： B22D41/50
摘要： A submerged entry nozzle for introducing molten steel into a casting mold is disclosed. The nozzle includes nozzle structure defining a central bore and two transverse exit ports communicating with the bottom of the central bore, the central bore terminating at an upwardly dish-shaped bottom surface that extends to the periphery of the nozzle structure and forms the lower surface regions of the exit ports, whereby molten steel flowing across the upwardly dish-shaped bottom surface is directed outwardly and upwardly from the nozzle structure.
摘要翻译： 公开了一种用于将钢水引入铸模的浸入式喷嘴。 喷嘴包括限定中心孔的喷嘴结构和与中心孔的底部连通的两个横向出口，中心孔终止于向上盘形的底表面，其延伸到喷嘴结构的周边并形成下表面区域 的出口，由此流过上面的盘形底表面的钢水从喷嘴结构向外和向上指向。
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公开(公告)号：US5885323A
公开(公告)日：1999-03-23
申请号：US845602
申请日：1997-04-25
申请人： Chung S. Kim , Kenneth M. Goodson
发明人： Chung S. Kim , Kenneth M. Goodson
CPC分类号： C21C5/4606 , C21C5/305
摘要： A method of improving post-combustion heat recovery in a vessel containing a charge of molten ferrous metal and slag includes the use of a lance for the introduction of oxygen gas into the charge. The method includes blowing oxygen into the charge through at least one first nozzle of the lance for refining the molten metal into steel. Oxygen is blown through at least one second nozzle of the lance from at least one location spaced above the first nozzle at an oxygen flow rate effective to produce foamy slag in an amount for obtaining a post-combustion heat transfer efficiency of at least about 40% without appreciable overflow of the slag from the vessel. The oxygen flow rate from the second nozzle is at a minimum at about a starting point of a peak decarburization period of the charge. Iron oxide containing pellets may also be added to the charge. In this case, the oxygen flow rate from the first nozzle may be reduced while the iron oxide containing material is being added, and the reduced oxygen flow may be replenished with an inert gas.
摘要翻译： 一种改善在含有熔融黑色金属和炉渣的容器中的燃烧后热回收的方法包括使用喷枪将氧气引入电荷中。 该方法包括通过喷枪的至少一个第一喷嘴将氧吹入进料，以将熔融金属精炼成钢。 氧气通过喷枪的至少一个第二喷嘴从至少一个位置以第一喷嘴间隔开的氧气流速吹送，以有效地产生泡沫炉渣，其量用于获得至少约40％的燃烧后传热效率， 没有来自容器的渣的明显溢出。 来自第二喷嘴的氧气流速在电荷的峰值脱碳期的起点附近是最小的。 还可以向电荷中加入含氧化铁的颗粒。 在这种情况下，可以减少来自第一喷嘴的氧气流量，同时添加含氧化铁的材料，并且还可以用惰性气体补充还原氧气流。
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4.发明授权
公开(公告)号：US5798001A
公开(公告)日：1998-08-25
申请号：US579745
申请日：1995-12-28
申请人： Jeffrey P. Anderson
发明人： Jeffrey P. Anderson
CPC分类号： C21D8/1266 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C21D8/1277
摘要： A method of making electrical steel strip characterized by low core loss and high permeability in the rolling direction includes the steps of: hot rolling a slab into a strip having a composition consisting essentially of (% by weight): up to 0.01 C, 0.20-2.25 Si, 0.10-0.45 Al, 0.10-1.0 Mn, up to 0.015 S, up to 0.006 N, up to 0.07 Sb, up to 0.12 Sn, 0.005-0.1 P, followed by coiling, hot band annealing, cold rolling, batch annealing at a temperature in the range of 1040.degree.-1140.degree. F., and temper rolling to provide the strip with a transfer surface roughness (Ra) of 15 .mu.in or less. Electrical steel is manufactured from the steel strip by punching out shapes into laminations, and final annealing the laminations. The electrical steel has a grain texture including a {110} orientation and a permeability in the range of 5000-65000 (G/Oe) in the rolling direction.
摘要翻译： 一种制造电磁钢带的方法，其特征在于低的铁损和轧制方向的高渗透性包括以下步骤：将板坯热轧成具有基本上由（重量％）组成的组成的带材：至多0.01℃， 2.25 Si，0.10-0.45 Al，0.10-1.0 Mn，最高0.015 S，最高0.006 N，最高0.07 Sb，最多0.12 Sn，0.005-0.1 P，然后卷取，热带退火，冷轧，批次 在1040〜-1440°F的温度范围内进行退火，进行回火轧制，使带材的转印面粗糙度（Ra）为15μm以下。 电钢通过将形状冲压成叠片，并且最终退火叠片，由钢带制成。 该电工钢具有包括{110} <001>取向的晶粒结构，并且在轧制方向上具有在5000-65000（G / Oe）范围内的磁导率。
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公开(公告)号：US5203909A
公开(公告)日：1993-04-20
申请号：US776981
申请日：1991-10-15
CPC分类号： C21C5/4653 , B22D43/001 , C21C2005/468
摘要： The present invention provides a new and improved method and apparatus for tapping molten metal through the tap hole of a metallurgical vessel. The apparatus utilizes a ladle or a BOF furnace or other metallurgical vessel used for the containment of molten metal. At least one extension drive mechanism is attached to the support structure to position the distal end of a lance within the vessel a predetermined distance above the surface of its contents. The lance is connected to an inert gas source such as Argon. Once the lance is properly positioned, the inert gas is directed onto the surface of the molten metal to prevent the slag from entering the tap hole. An alignment drive can also be attached to the support structure to adjust the position of the extension drive relative to the vessel so that the lance may be properly positioned within the vessel above the tap hole. The extension and alignment drives are operatively controlled by a computerized controller which interfaces with the sensors to monitor the physical characteristics of the vessel. The controller operatively controls the drives to position the lance a predetermined distance above the tap hole of the vessel.
摘要翻译： 本发明提供了一种新的改进的方法和装置，用于通过冶金容器的排放孔攻击熔融金属。 该设备利用钢包或BOF炉或用于容纳熔融金属的其它冶金容器。 至少一个延伸驱动机构附接到支撑结构，以将喷枪的远端定位在容器内部超过其内容物表面的预定距离。 喷枪连接到惰性气体源如氩气。 一旦喷枪正确定位，惰性气体被引导到熔融金属的表面上，以防止炉渣进入排水孔。 对准驱动器还可以附接到支撑结构以调节延伸驱动器相对于容器的位置，使得喷枪可以适当地定位在容器上方的抽头孔上方。 扩展和对准驱动器由计算机控制器可操作地控制，计算机控制器与传感器接口以监测容器的物理特性。 控制器操作地控制驱动器以将喷枪定位在容器的抽头孔上方一预定的距离处。
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公开(公告)号：US6158572A
公开(公告)日：2000-12-12
申请号：US127155
申请日：1998-07-31
CPC分类号： B21B39/14 , B21B2203/182
摘要： A roller assembly adapted to be mounted to a conveyor sideguide for use in directing a strip of steel along a conveyor. The roller assembly includes a roller member having a plurality of flutes spaced apart on outer surface of the roller. The roller assembly also includes a support assembly featuring a roller support assembly in which the roller member is rotatably supported and a mounting assembly for securing the roller member to the sideguide such that the roller extends beyond an inner surface of the conveyor sideguide facing the steel strip. The roller assembly further includes a fluid manifold which directs a source of pressurized liquid directed at the roller to sequentially impinge each of the plurality of flutes and cause the roller member to rotate with respect to the roller support assembly at a predetermined angular velocity, the angular velocity of the roller automatically adjusting to correspond to a linear velocity of the steel strip when an edge of the steel strip contacts the roller member. The roller assembly support further includes a ball bearing assembly disposed between the roller member and a stationary pin of the roller support assembly.
摘要翻译： 适于安装在输送机侧导板上用于沿着输送机引导钢带的滚筒组件。 辊组件包括具有在辊的外表面上间隔开的多个凹槽的辊构件。 辊组件还包括支撑组件，其特征在于支撑组件，其中辊构件可旋转地支撑在该支撑组件中，以及用于将辊构件固定到侧导板的安装组件，使得辊延伸超过面向钢带的输送机侧面的内表面 。 辊组件还包括流体歧管，其引导指向辊的加压液体源，以顺序地冲击多个凹槽中的每一个，并且使得辊构件相对于辊支撑组件以预定角速度旋转，角度 当钢带的边缘接触辊构件时，辊的速度自动调节以对应于钢带的线速度。 辊组件支撑件还包括设置在辊构件和辊支撑组件的固定销之间的滚珠轴承组件。
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公开(公告)号：US5885328A
公开(公告)日：1999-03-23
申请号：US646832
申请日：1996-05-31
IPC分类号： C22B1/00 , C21B11/00 , C21B13/00 , C22B1/14 , C22B1/16 , C22B1/24 , C22B1/248 , C22B7/00 , C22B7/02 , C22B1/242
CPC分类号： C22B1/2406 , C21B13/0046 , C22B7/02 , Y02P10/216 , Y10S75/961 , Y10S75/962
摘要： A method of agglomerating oil-containing steel mill waste includes the step of combining a first steel mill waste component with a second steel mill waste component to form a mixture. The first waste component includes substantially dry non-oily steel mill waste and the second waste component includes oil-containing steel mill waste. The first waste component and the second waste component are agglomerated.
摘要翻译： 含油的钢厂垃圾的凝集方法包括将第一钢铁废料组分与第二炼钢废料组分混合以形成混合物的步骤。 第一废料组分包括基本干燥的非油性钢铁废料，第二废料组分包括含油钢厂废料。 第一废物组分和第二废物组分凝聚。
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公开(公告)号：US5584909A
公开(公告)日：1996-12-17
申请号：US375343
申请日：1995-01-19
申请人： Chung S. Kim
发明人： Chung S. Kim
CPC分类号： C21C5/32 , C21C2005/366
摘要： A method of improving the post-combustion heat recovery in a basic oxygen furnace by controllably forming a foamy slag. The foamy slag is generated by increasing the lance height and reducing the rate of lance height reduction during the oxygen blowing cycle. The foamy slag is controlled to prevent slopping by calculating the approximate starting point of the peak decarburization period for the charge and then adjusting the oxygen flow rate to be at a minimum at the commencement of the peak decarburization period.
摘要翻译： 一种通过可控地形成泡沫状炉渣来改善碱性氧气炉中的后燃热回收的方法。 通过增加喷枪高度并降低吹氧循环期间喷枪高度降低的速率来产生泡沫状炉渣。 通过计算充电峰值脱碳期的近似起点，然后在峰值脱碳期开始时将氧气流量调节至最低，控制泡沫炉渣以防止流失。
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9.发明授权Process of making electrical steels having good cleanliness and magnetic properties 失效制造具有良好清洁度和磁性能的电工钢的工艺
公开(公告)号：US6068708A
公开(公告)日：2000-05-30
申请号：US38172
申请日：1998-03-10
CPC分类号： C21D8/1233 , C22C38/002 , C22C38/60 , C21D8/1222 , C21D8/1272
摘要： A method of making electrical steel strip characterized by low core loss, high permeability and good cleanliness includes producing a slab having a composition consisting essentially of (% by weight): up to 0.02 C, 0.20-1.35 Si, 0.10-0.45 Al, 0.10-1.0 Mn, up to 0.015 S, up to 0.006 N, up to 0.07 Sb, up to 0.12 Sn, and the balance being substantially iron. The slab is hot rolled into a strip with a finishing temperature in the ferrite region. The strip is coiled at a temperature less than 1200.degree. F. and, preferably, less than 1000.degree. F. The strip which has not been subjected to an annealing operation after the coiling is subjected to cold rolling. The strip is then batch annealed and temper rolled.
摘要翻译： 一种制造低铁损，高渗透性和良好清洁度的电工钢带的方法包括制造具有基本上由（重量％）组成的板坯：至多0.02C，0.20-1.35Si，0.10-0.45Al，0.10 -1.0Mn，高达0.015S，至多0.006N，至多0.07Sb，至0.12Sn，余量基本上为铁。 将板坯热轧成铁素体区域的终轧温度的带材。 该条带在低于1200°F，优选小于1000°F的条件下盘绕。在卷取之后未进行退火操作的条带进行冷轧。 然后将带材进行批量退火并回火轧制。
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公开(公告)号：US5539768A
公开(公告)日：1996-07-23
申请号：US408041
申请日：1995-03-21
申请人： Richard E. Kracich
发明人： Richard E. Kracich
CPC分类号： H05B7/109
摘要： An electric arc furnace includes at least one electrode projecting into a furnace vessel for containing a charge to be heated and electrode support structure for moving the electrode in a direction along a path towards and away from the charge. An improvement to the electric arc furnace comprises a sensor for detecting the position of the electrode support structure from an initial position. A processor calculates one of a support structure travel distance from the initial position and a rate of electrode consumption. An alarm signal is generated in response to at least one of the travel distance and the rate of electrode consumption being at least equal to a respective predetermined threshold travel distance or a predetermined threshold rate of electrode consumption, either of which is indicative of an excess electrode consumption condition for a given heat. A power reducer automatically decreases electrical power supplied to the electrode in response to the alarm signal being generated and as a function of a magnitude of the excess electrode consumption.
摘要翻译： 电弧炉包括突出到炉容器中的至少一个电极，用于容纳待加热的电荷和电极支撑结构，用于沿着朝向和远离电荷的路径的方向移动电极。 对电弧炉的改进包括用于从初始位置检测电极支撑结构的位置的传感器。 处理器计算起始位置之间的支撑结构行进距离和电极消耗率之一。 响应于行驶距离和电极消耗速率中的至少一个至少等于相应的预定阈值行驶距离或预定的电极消耗阈值速率而产生报警信号，其中任何一个指示过量电极 给定热量的消耗条件。 功率减小器响应于产生的报警信号和作为多余电极消耗的大小的函数自动地降低供应给电极的电力。
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