Smelting furnace and method for feeding material to be processed therein
    4.
    发明授权
    Smelting furnace and method for feeding material to be processed therein 失效
    冶炼炉及其加工材料的方法

    公开(公告)号:US4995051A

    公开(公告)日:1991-02-19

    申请号:US313960

    申请日:1989-02-21

    摘要: The invention relates to a smelting furnace, particularly a D.C. arc furnace, suited for the treatment of finely-divided material, which comprises at least three electrodes suspended through the roof in order to create the electric arc. The process material is fed in through at least one feed gate (30) arranged inside the circle orbit formed by the electrodes (4, 16, 26) suspended through the furnace roof, which feed gate (30) is provided with auxiliary members in order to create an even supply of the material into the furnace. In order to discharge the gases created in the process, there is provided at least one outlet (20) outside the circle orbit formed by the electrodes (4, 16, 26).The invention also relates to a method for feeding finely divided material into the smelting furnace. According to this method, the material is fed through the feed gate (30) in suspension, either vertically or tangentially.

    摘要翻译: 本发明涉及一种适用于处理细碎材料的熔炼炉,特别是直流电弧炉,其包括悬挂在屋顶上的至少三个电极以产生电弧。 处理材料通过布置在悬挂在炉顶上的电极(4,16,26)形成的圆轨道内的至少一个进料口(30)进料,该进料口(30,16)按顺序设置有辅助构件 以便将材料均匀地供应到炉中。 为了排出在该过程中产生的气体,在由电极(4,16,26)形成的圆轨道外部提供至少一个出口(20)。 本发明还涉及一种将细碎材料进料到熔炼炉中的方法。 根据该方法,材料以垂直或切向悬浮的方式通过进料口(30)进料。

    Device for moving solid material fed onto the surface of a melt and for
breaking a slag crust formed on the surface of the melt or inside the
charge
    5.
    发明授权
    Device for moving solid material fed onto the surface of a melt and for breaking a slag crust formed on the surface of the melt or inside the charge 失效
    用于将供入熔体表面的固体材料移动并用于破碎形成在熔体表面上或炉内的炉渣外壳的装置

    公开(公告)号:US4464764A

    公开(公告)日:1984-08-07

    申请号:US341458

    申请日:1982-01-21

    摘要: The invention relates to a device for poking a charge fed onto the surface of a melt in an electric arc furnace having a hood and an external cooled casing (2) articulated at one of its ends to the lower section (21) of a horizontal circumferention bend in the wall of the furnace (23) hood (24) which faces the melt, drive cylinders (5) for tilting the casing in different directions about its joint, a spindle ( 1) installed tightly in the cooled casing (2) and being axially reciprocating and rotatable, and drive cylinders (17) for making the spindle (1) to project from said one end of the casing (2) to poke the charge fed onto the melt surface and break any crust on the melt surface or inside the solid charge, when the cooled casing (2) and the spindle (1) inside it are tilted about the joint and rotated.

    摘要翻译: 本发明涉及一种在具有发动机罩的电弧炉中戳入供给到熔体表面上的电荷的设备,以及一个外部冷却壳体(2),其在其一端连接到水平环绕的下部(21) 在面向熔体的炉(23)罩(24)的壁上弯曲,用于使壳体围绕其接头在不同方向倾斜的驱动缸(5),紧密地安装在冷却的壳体(2)中的主轴(1) 轴向往复运动和可旋转的驱动气缸(17),用于使主轴(1)从壳体(2)的所述一端突出以驱动进料到熔体表面上的电荷,并破坏熔体表面或内部的任何外壳 当冷却的壳体(2)和其内部的心轴(1)围绕关节倾斜并旋转时,固体电荷。

    Method and apparatus for batch preparation and feeding into the smelting
process
    8.
    发明授权
    Method and apparatus for batch preparation and feeding into the smelting process 失效
    批量制备和进料到冶炼过程中的方法和装置

    公开(公告)号:US4705474A

    公开(公告)日:1987-11-10

    申请号:US890097

    申请日:1986-07-28

    摘要: The present invention relates to a method and apparatus for preparing a feed mixture, made of several batch components, at one stage in order to feed it into a smelting furnace. The preparation of the batch may include the preheating and drying of the material, the removal of crystal waters and evaporable substances as well as the conduction of the batch into the smelting furnace. According to the invention, a hot inert gas is conducted through a downwards settling batch so that the gas is mixed into the batch as well as possible, but even partial fluidization is prevented. The apparatus of the invention comprises a pretreatment silo (6) which is uniform at the upper part is divided into several sub-silos (7) at the lower part. At the lower part of the sub-silos there are connected ducts (8) wherealong the batch flows into the smelting furnace (9) located below the pretreatment silo (6). In between the sub-silos (7) there is located the gas distribution chamber (34), wherefrom the gases are distributed through the distribution ducts (35) extending to the sub-silos and the gases are discharged at the top (41) of the silo (6). The employed gas is obtained by means of burning the exhaust gases (10) from the smelting furance and by combining them with cleaned circulation gases (25).

    摘要翻译: 本发明涉及在一个阶段制备由多个批次成分制成的进料混合物的方法和装置,以便将其进料到冶炼炉中。 批料的制备可以包括材料的预热和干燥,结晶水和蒸发物质的去除以及批次进入熔炼炉的传导。 根据本发明,热惰性气体通过向下沉降批料传导,使得气体尽可能地混合到批料中,但是甚至防止了部分流化。 本发明的装置包括在上部分均匀的预处理筒仓(6),其在下部分成几个子仓(7)。 在子仓的下部有连接的管道(8),其中批料流入位于预处理筒仓(6)下方的熔炼炉(9)中。 在子仓(7)之间设有气体分配室(34),气体分布室(34)通过延伸到子仓的分配管道(35)分布,并且气体在顶部(41)处排出 筒仓(6)。 所采用的气体是通过从熔炼炉中燃烧废气(10)并将其与清洁的循环气体(25)组合而获得的。

    Method for controlling and balancing the power in an electric furnace
    9.
    发明授权
    Method for controlling and balancing the power in an electric furnace 失效
    控制和平衡电炉功率的方法

    公开(公告)号:US4580272A

    公开(公告)日:1986-04-01

    申请号:US482431

    申请日:1983-06-03

    IPC分类号: H05B7/148

    摘要: A method for controlling and balancing the power consumption in an electric smelting or heating furnace, in which power is fed into the furnace via at least two electrodes and in which the tips of the electrodes are maintained at the same level above the melt or at the same distance from the furnace cover throughout the process sequence. Power is controlled by adjusting the voltage between the furnace electrodes, the electrotechnical quantities of the furnace varying freely throughout the process sequence. Any disequilibrium due to the electrode structure or to changes in the furnace conditions is balanced out by adjusting the moving of furnace electrodes, corresponding to the wear of the electrodes, by using the quantities measured in the furnace and the short-term and long-term variations calculated with the aid of these quantities, and the linear functions with relation to time of the variations.

    摘要翻译: 一种用于控制和平衡电冶炼或加热炉中的功率消耗的方法,其中通过至少两个电极将电力供给到炉中,并且其中电极的尖端保持在熔融物上方或在熔融炉 在整个过程顺序与炉盖相同的距离。 功率通过调节炉电极之间的电压来控制,炉子的电工数量在整个过程顺序中自由变化。 由于电极结构或炉条件的变化引起的任何不平衡通过使用在炉中测量的量和短期和长期的温度来调节与电极的磨损相对应的炉电极的移动来平衡 借助于这些量计算的变化,以及与变化时间有关的线性函数。

    Apparatus for batch preparation and feeding into the smelting process
    10.
    发明授权
    Apparatus for batch preparation and feeding into the smelting process 失效
    用于批量制备和进料到冶炼过程中的装置

    公开(公告)号:US4708640A

    公开(公告)日:1987-11-24

    申请号:US945179

    申请日:1986-12-22

    摘要: The present invention relates to a method and apparatus for preparing a feed mixture, made of several batch components, at one stage in order to feed it into a smelting furnace. The preparation of the batch may include the preheating and drying of the material, the removal of crystal waters and evaporable substances as well as the conduction of the batch into the smelting furnace. According to the invention, a hot inert gas is conducted through a downwards settling batch so that the gas is mixed into the batch as well as possible, but even partial fluidization is prevented. The apparatus of the invention comprises a pretreatment silo (6) which is uniform at the upper part but is divided into several sub-silos (7) at the lower part. At the lower part of the sub-silos there are connected ducts (8) wherealong the batch flows into the smelting furnace (9) located below the pretreatment silo (6). In between the sub-silos (7) there is located the gas distribution chamber (34), wherefrom the gases are distributed through the distribution ducts (35) extending to the sub-silos and the gases are discharged at the top (41) of the silo (6). The employed gas is obtained by means of burning the exhaust gases (10) from the smelting furnace and by combining them with cleaned circulation gases (25).

    摘要翻译: 本发明涉及在一个阶段制备由多个批次成分制成的进料混合物的方法和装置,以便将其进料到冶炼炉中。 批料的制备可以包括材料的预热和干燥,结晶水和蒸发物质的去除以及批次进入熔炼炉的传导。 根据本发明,热惰性气体通过向下沉降批料传导,使得气体尽可能地混合到批料中,但是甚至防止了部分流化。 本发明的装置包括在上部均匀的预处理筒仓(6),但在下部分成几个子仓(7)。 在子仓的下部有连接的管道(8),其中批料流入位于预处理筒仓(6)下方的熔炼炉(9)中。 在子仓(7)之间设有气体分配室(34),气体分布室(34)通过延伸到子仓的分配管道(35)分布,并且气体在顶部(41)处排出 筒仓(6)。 所采用的气体是通过从冶炼炉中燃烧废气(10)并将其与清洁的循环气体(25)组合而获得的。