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公开(公告)号：US4353738A
公开(公告)日：1982-10-12
申请号：US264447
申请日：1981-05-18
申请人： John A. Persson
发明人： John A. Persson
摘要： A method of smelting lead comprises the steps of containing a quantity of crude lead in an electric arc furnace, disposing a layer of coke or carbon granules over said lead, disposing at least two spaced apart electrodes in contact with said granules, energizing said electrodes for passing an electric current through said granules for heating said lead to at least its fusion temperature, and withdrawing the molten lead from beneath the granules.
摘要翻译： 熔融铅的方法包括以下步骤：在电弧炉中含有一定量的粗铅，在所述引线上设置一层焦炭或碳颗粒，设置与所述颗粒接触的至少两个间隔开的电极，使所述电极通电 使电流通过所述颗粒以将所述铅加热到至少其熔融温度，并将熔融铅从颗粒下方排出。
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公开(公告)号：US4249952A
公开(公告)日：1981-02-10
申请号：US126189
申请日：1980-03-03
CPC分类号： C04B7/436 , C04B18/162 , C05D1/00 , Y02W30/95
摘要： A method is disclosed for obtaining useful products from cement kiln waste dust. The dust is collected and added to an electric arc furnace where it is melted. The temperatures required to melt the dust are sufficiently high that alkali sulfates present in the dust are volatilized, leaving a melt which has a composition acceptable for the production of cement clinker. The volatilized components are collected to form a second useful product; i.e., a potassium rich material suitable for the production of potassium bearing chemicals, such as fertilizers.
摘要翻译： 公开了一种从水泥窑废粉中获得有用产品的方法。 将灰尘收集并添加到电弧炉中，在其中熔化。 熔化粉尘所需的温度足够高，使得存在于灰尘中的碱性硫酸盐挥发，留下具有可用于生产水泥熟料的成分的熔体。 收集挥发的组分以形成第二有用的产物; 即适用于生产含钾化学物质的富钾材料，例如肥料。
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公开(公告)号：US4490169A
公开(公告)日：1984-12-25
申请号：US545681
申请日：1983-10-26
申请人： John A. Persson
发明人： John A. Persson
摘要： Low grade ores, such as low-grade manganese ore, are reduced in an electric smelting furnace having two melting zones divided by a barrier. The ore and a small quantity of carbon are melted in the first zone at a temperature sufficient to reduce the iron oxide contained in the ore to molten iron, leaving molten layers of ore and slag which are richer in manganese than the starting material. The melt and slag are allowed to flow over the barrier to the second zone where a second charge of ore and a greater amount of carbon are deposited. Electrode melting in the second zone is carried out at a higher temperature to reduce the manganese and remaining iron therein to form a high-grade ferromanganese product. The molten products are tapped from the furnace in the respective zones. The method of the present invention may be used with other ores such as low grade chromium ore and the method may also be used for the production of silicomanganese. The method may also be used for a wide variety of other ores where it is desired to remove a first constituent from the starting ore and enrich a second portion of the ore in the same melting furnace.
摘要翻译： 在具有两个熔区除以屏障的电冶炼炉中，低等级的矿石，如低品位锰矿，被还原。 该矿石和少量的碳在第一区域中以足以将矿石中所含的氧化铁还原成铁水的温度熔化，留下比起始原料富含锰的矿石和矿渣的熔融层。 允许熔体和炉渣在阻挡层上流动到第二区域，在第二区域沉积有第二次矿石和更大量的碳。 第二区域的电极熔化在较高的温度下进行，以便还原锰和其中的铁，形成高级铁锰酸盐产品。 在各个区域中从熔炉中抽出熔融的产物。 本发明的方法可以与其他矿石如低品位铬矿一起使用，并且该方法也可用于生产硅锰。 该方法还可以用于各种各样的其它矿石，其中期望从起始矿石中除去第一成分并在同一熔化炉中富集矿石的第二部分。
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公开(公告)号：US4307872A
公开(公告)日：1981-12-29
申请号：US170651
申请日：1980-07-21
申请人： John A. Persson
发明人： John A. Persson
摘要： Ore taken from the group consisting of low-grade manganese ore ferromanganese ore and chromium ore is reduced in an electric arc furnace having two melting zones divided by a barrier. Ore and a small quantity of carbon are melted in the first zone and ore and a larger proportion of carbon are melted in the second zone. The molten metal product in the first zone forms a pool below a molten layer of slag having a high content of metal above which is disposed unmelted ore and carbon. The slag layer is flowed over the barrier to the second zone for enriching a second charge of ore and carbon therein. Depending upon the type of ore being reduced, a first molten product such as iron or high-grade ferromanganese is tapped from the first zone and a second molten product such as high-grade ferromanganese, high-grade ferrochromium or silicomanganese is tapped from the second zone. The barrier may be formed of carbon covered by a surface layer of titanium carbide.
摘要翻译： 在具有两个熔区除以屏障的电弧炉中，从由低品位锰铁锰铁矿和铬矿成矿组成的矿石中还原。 矿石和少量碳在第一区熔化，矿石和较大比例的碳在第二区熔化。 第一区域中的熔融金属产物在金属含量高的熔融熔渣层下面形成一个池，在其上方设置未熔化的矿石和碳。 炉渣层在阻挡层上流动到第二区域，以富集第二次矿石和碳。 根据所还原的矿石类型，从第一区挖掘第一熔融产物如铁或高级锰铁，第二熔融产物如高级铁锰，高级铬铁或硅锰矿从第二层 区。 阻挡层可以由碳化钛表面层覆盖的碳形成。
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公开(公告)号：US4289537A
公开(公告)日：1981-09-15
申请号：US127556
申请日：1980-03-06
摘要： Tricalcium silicate materials useful in the production of Portland and other cements are prepared by melting a mixture of materials comprising basically line and silica in an electric furnace. The voltage between the electrodes and the conductivity of the melt are controlled so that a predetermined separation will be maintained between the lower end of the carbon electrode and the melt.
摘要翻译： 用于生产波特兰和其他水泥的硅酸三钙材料通过在电炉中熔化基本上包含线和二氧化硅的材料的混合物来制备。 控制电极之间的电压和熔体的电导率，使得在碳电极的下端和熔体之间将保持预定的分离。
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公开(公告)号：US4620308A
公开(公告)日：1986-10-28
申请号：US792782
申请日：1985-10-30
CPC分类号： H05B7/148 , Y02P10/256 , Y02P10/259
摘要： An arc furnace electrode control includes phase angle measuring devices connected respectively for producing a phase angle signal functionally related to the phase angle between the primary electrode voltage and current. A bias circuit is coupled to the primary of each phase for producing a bias signal functionally related to the reactive volt amperes delivered to the electrodes. Null detectors are coupled to each phase angle measuring device for receiving one of the phase angle signals and to the bias circuit for receiving the bias signal for producing a control signal for each phase related to the difference between the respective phase angle signal and the bias signal. A control is coupled to each null detector and is responsive to each control signal for individually positioning the respective electrodes in relation to the furnace so as to achieve preselected phase angles.
摘要翻译： 电弧炉电极控制包括分别连接的相角测量装置，用于产生与主电极电压和电流之间的相位角功能相关的相位角信号。 偏置电路耦合到每相的初级，用于产生与传送到电极的无功电压安培功能相关的偏置信号。 零检测器耦合到每个相位角测量装置，用于接收相位角信号之一和偏置电路，用于接收偏置信号，以产生与各个相位角信号和偏置信号之间的差相关的每个相位的控制信号 。 控制器耦合到每个零检测器，并响应于每个控制信号，以相对于炉子单独地定位相应的电极，以便实现预选的相位角。
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公开(公告)号：US4575856A
公开(公告)日：1986-03-11
申请号：US612039
申请日：1984-05-18
申请人： John A. Persson
发明人： John A. Persson
IPC分类号： H05B7/09
CPC分类号： H05B7/09
摘要： An iron free self baking electrode comprises an outer metallic shell, a center core formed of a graphite or prebaked carbon material spaced from the shell and a quantity of a carbonaceous paste which cures into a solid electrode and bonds to the graphite or prebaked carbon core as the core and paste passes downwardly through the casing. The graphite or prebaked carbon core conducts heat to the paste material to promote more rapid curing.
摘要翻译： 无铁自焙电极包括外金属壳，由石墨或与壳体间隔开的预焙碳材料形成的中心芯和一定量固化成固体电极并与石墨或预焙碳芯结合的碳质浆料，如 芯和浆料向下通过套管。 石墨或预烘烤碳芯将热量传导到糊料以促进更快速的固化。
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公开(公告)号：US4153812A
公开(公告)日：1979-05-08
申请号：US844210
申请日：1977-10-21
申请人： John A. Persson
发明人： John A. Persson
CPC分类号： H05B7/11
摘要： Bus bars for connecting arc furnance electrodes to a transformer include pairs of flat, rectangular, hollow, conductive members having side surfaces substantially greater in length than the end surfaces. One side surfaces of the bus bar of each pair are disposed in a parallel, closely proximate relation with respect to the other and a sheet of insulating material disposed between said surfaces. The bus bars of each pair are connected to transformer terminals having different polarities. The bus bar pairs are arranged in a closely spaced parallel relation.
摘要翻译： 用于将电弧炉电极连接到变压器的母线棒包括成对的平面，矩形，中空的导电构件，其具有比端表面大得多的侧表面。 每对母线的一个侧面以相对于另一个的平行紧密关系设置，并且设置在所述表面之间的绝缘材料片。 每对母线连接到具有不同极性的变压器端子。 汇流条对被布置成紧密间隔的平行关系。
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公开(公告)号：US4490825A
公开(公告)日：1984-12-25
申请号：US424572
申请日：1982-09-27
申请人： John A. Persson
发明人： John A. Persson
IPC分类号： H05B7/12
CPC分类号： H05B7/12
摘要： A water-cooled arc furnace electrode includes a hollow metallic jacket having a cylindrical wall portion supported in spaced relation from a graphite electrode. A shell is spaced from and surrounds the wall portion and has a section extending below the wall portion and upwardly into engagement with the lower end thereof. A baffle is disposed between the wall portion and the shell to define a first cooling fluide passage for water flowed downwardly between the shell and the baffle and a second passage extending upwardly between the baffle and the wall portion. A plurality of spaced electrical contact members are mounted on the lower portion of the shell and are in pressure engagement with the electrode. The shell and the contacts provide a current path around a proportion of the electrode for increased conductivity and to minimize electrode oxidation.
摘要翻译： 水冷电弧炉电极包括中空金属护套，其具有与石墨电极间隔开的支撑的圆筒形壁部分。 壳体与壁部分间隔开并围绕壁部分，并且具有在壁部下方延伸并向上与其下端接合的部分。 挡板设置在壁部分和壳体之间以限定用于在壳体和挡板之间向下流动的水的第一冷却流体通道和在挡板和壁部分之间向上延伸的第二通道。 多个间隔开的电接触构件安装在壳体的下部并与电极压力接合。 壳体和触点提供围绕一部分电极的电流路径，以增加电导率并使电极氧化最小化。
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公开(公告)号：US4447906A
公开(公告)日：1984-05-08
申请号：US395807
申请日：1982-07-06
申请人： John A. Persson
发明人： John A. Persson
CPC分类号： C22B21/02
摘要： A method of producing aluminum is carried out in an electric arc furnace having primary and secondary zones separated by a divider constructed to permit the flow of molten but not gaseous products between zones. The method includes providing a charge of carbon into the primary zone containing a mixture of aluminum and aluminum carbide and providing a charge of alumina to the secondary zone, simultaneously heating the zones to react said carbon with the aluminum to form aluminum carbide in said mixture, flowing the mixture into the secondary zone, reacting the aluminum carbide in the mixture with alumina to form additional aluminum and an aluminum oxycarbide slag, flowing the slag to the primary zone for reaction with the aluminum carbide to form aluminum in the mixture, and tapping aluminum from the secondary zone.
摘要翻译： 一种生产铝的方法是在一个电弧炉中进行的，该电弧炉具有一个分隔开的分隔开的初级和次级区域，该隔板被构造成允许在区域之间流动熔融但不是气态的产品。 该方法包括向含有铝和碳化铝的混合物的初级区域提供碳，并向第二区域提供氧化铝的电荷，同时加热该区域以使所述碳与铝反应以在所述混合物中形成碳化铝， 将混合物流入二次区域，使混合物中的碳化铝与氧化铝反应以形成额外的铝和碳氧化铝渣，将炉渣流到初级区域以与碳化铝反应以在混合物中形成铝，并且将铝 从二级区。
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