METHOD FOR CONTROLLING AN ALUMINA FEED TO ELECTROLYTIC CELLS FOR PRODUCING ALUMINUM

    公开(公告)号:US20170145574A1

    公开(公告)日:2017-05-25

    申请号:US15320233

    申请日:2014-06-19

    CPC classification number: C25C3/20 C25C3/14

    Abstract: The invention relates to nonferrous metallurgy and may be suitable for controlling the feed of alumina to electrolytic cells for producing aluminum to maintain the alumina concentration in the electrolytic melt equal or close to the saturation value. To maintain the alumina concentration within the set range, reduced voltage U or pseudo-resistance R is measured. The measured values are recorded at fixed time intervals, underfeeding or overfeeding phases compared to a theoretical alumina feeding rate during electrolysis are formed, whereas the duration of underfeeding phases is selected depending on the alumina concentration in the electrolytic melt, and the duration of overfeeding phases is determined according to the change of one or more electrolytic cell parameters being recorded: reduced voltage, U, pseudo-resistance. R, rates of reduced voltage, dU/dt, pseudo-resistance, dR/dt, change. Adjustments to the anode-cathode distance to maintain the electrolytic cell energy balance may be performed during any of the feeding phases. The invention improves the engineering and economic performance of the aluminum production process due to elimination of anode effects in electrolytic cells with carbon anodes, as well as by means of using novel structural and electrode materials having a high rate of corrosion in the low alumina concentration electrolytic melt.

    SYSTEM, METHOD AND APPARATUS FOR MEASURING ELECTROLYSIS CELL OPERATING CONDITIONS AND COMMUNICATING THE SAME
    2.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR MEASURING ELECTROLYSIS CELL OPERATING CONDITIONS AND COMMUNICATING THE SAME 审中-公开
    用于测量电解槽操作条件并进行通信的系统,方法和装置

    公开(公告)号:US20170022619A1

    公开(公告)日:2017-01-26

    申请号:US15050050

    申请日:2016-02-22

    Applicant: ALCOA INC.

    CPC classification number: C25C7/06 C25C3/14 C25C3/20 C25D21/12

    Abstract: System, method and apparatus for measuring electrolysis cell operating conditions and communicating the same are disclosed. The system includes a selectively positionable member coupled to an analytical apparatus, wherein the selectively positionable is configured to move the analytical apparatus into and out of physical communication with a bath. The system may also include a crust breaker for breaking the surface of a bath and an electronic device for measuring bath level.

    Abstract translation: 公开了用于测量电解池操作条件并进行通信的系统,方法和装置。 该系统包括耦合到分析装置的可选择性定位的构件,其中可选择定位的构件被配置为使分析装置移入和移出与浴的物理连通。 该系统还可以包括用于破坏浴表面的外壳断裂器和用于测量浴液面的电子装置。

    Device for the dosed feeding of raw material into an aluminium reduction cell
    3.
    发明授权
    Device for the dosed feeding of raw material into an aluminium reduction cell 有权
    将原料计量送入铝还原电池的装置

    公开(公告)号:US09388500B2

    公开(公告)日:2016-07-12

    申请号:US14414280

    申请日:2012-07-12

    CPC classification number: C25C3/14

    Abstract: The invention relates to a device for the metered feeding of stock into an aluminum electrolyzer. The device comprises a hopper for the material to be metered, a metering chamber with a rod having a pneumatic drive, an upper shut-off element which is rigidly fixed on the rod in the upper part of the metering chamber and is in the form of a valve, a lower shut-off element which is fixed on the end of the rod and is in the form of a cone valve with a conical cover, and charging apertures which are arranged around the perimeter in the upper part of the dosing chamber above the base of the hopper. The upper limits of the charging apertures are arranged above the upper position of the valve, and the distance from the base of the cone valve to the lower section of the metering chamber in an upper position of the rod is not less than the distance from the lower surface of the upper shut-off element to the lower limit of the charging apertures. An increase in the reliability of the device and in the metering accuracy is ensured, and, accordingly, the technological characteristics of the operation of the electrolyzer are improved.

    Abstract translation: 本发明涉及一种用于将电量计量送入铝电解槽的装置。 该装置包括用于要计量的材料的料斗,具有气动驱动杆的计量室,上部切断元件,刚性地固定在计量室上部的杆上,并且形式为 阀门,下切断元件,其固定在杆的端部并且具有锥形阀形式的圆锥形盖的形式,以及在定量室上部的周边周围布置的加料孔 料斗的底座。 充电孔的上限设置在阀的上部位置的上方,并且在杆的上部位置从锥形阀的底部到计量室的下部的距离不小于距离阀的距离 上切断元件的下表面到充电孔的下限。 确保了装置的可靠性的增加和计量精度的提高,因此提高了电解槽的工作特性。

    Dose Meter for Crust Punch and Alumina Dispenser
    4.
    发明申请
    Dose Meter for Crust Punch and Alumina Dispenser 有权
    用于地壳冲击和氧化铝分配器的剂量计

    公开(公告)号:US20150167190A1

    公开(公告)日:2015-06-18

    申请号:US14568224

    申请日:2014-12-12

    CPC classification number: C25C7/00 C25C3/14

    Abstract: A crust breaker and ore feeder device for electrolytic aluminum smelting employs an in-line three-position pneumatic cylinder capable of moving the plunger shaft between a raised position and a fully lowered position. A dose meter in the form of a cylindrical member rests a small distance above the valve seat of the crust breaker. In the raised position the dose meter fits within the dosing cup and receives the dose of alumina. In the lowered position of the crust breaker, the dose meter slows down the flow of alumina into the electrolytic liquid, with the alumina flowing out through cutouts formed in the lower rim of the dose meter.

    Abstract translation: 一种用于电解铝冶炼的地壳破碎机和送矿装置采用能够在升高位置和完全降低位置之间移动柱塞轴的在线三位气动缸。 圆柱形构件形式的剂量计位于地壳断路器的阀座上方较小的距离处。 在升高的位置,剂量计装配在剂量杯内并接收氧化铝的剂量。 在地壳破坏器的降低位置,剂量计减慢了氧化铝流入电解液中,氧化铝通过形成在剂量计下缘的切口流出。

    CONVEYOR FOR TRANSPORTING POWDER, AND A METHOD FOR CONVEYING POWDER
    5.
    发明申请
    CONVEYOR FOR TRANSPORTING POWDER, AND A METHOD FOR CONVEYING POWDER 有权
    用于运输粉末的输送机,以及用于输送粉末的方法

    公开(公告)号:US20140255109A1

    公开(公告)日:2014-09-11

    申请号:US14280858

    申请日:2014-05-19

    Inventor: Odd E. BJARNO

    CPC classification number: B65G53/40 B65G53/16 B65G53/20 B65G53/60 C25C3/14

    Abstract: A conveyor (10) for transporting powder from an inlet point (14) to at least one discharge point (20) comprises a fluidized bed transport space (12) and a fluidization gas supply space (16), the fluidized bed transport space (12) being separated from the fluidization gas supply space (16) by a gas permeable wall (18); a gas outlet (22) for removing fluidization gas from the transport duct (12); means (24) for separating dust from the removed fluidization gas; and means (26) for returning the separated dust to the powder proximate the discharge point (20). In a preferred embodiment, the separated fines dust is returned to, and homogenized into, the powder in a lower portion of a cyclone, which is located at the discharge point.

    Abstract translation: 用于将粉末从入口点(14)输送到至少一个排放点(20)的输送机(10)包括流化床输送空间(12)和流化气体供应空间(16),流化床输送空间 )通过透气壁(18)与流化气体供应空间(16)分离; 用于从输送管道(12)去除流化气体的气体出口(22); 用于从去除的流化气体中分离灰尘的装置(24); 以及用于将分离的灰尘返回到靠近排放点(20)的粉末的装置(26)。 在优选的实施方案中,分离的细粉尘返回到位于排放点的旋风分离器的下部的粉末并均质化。

    COMPACT SERVICE MODULE AND USE THEREOF IN A PLANT FOR PRODUCING ALUMINUM BY ELECTROLYSIS
    6.
    发明申请
    COMPACT SERVICE MODULE AND USE THEREOF IN A PLANT FOR PRODUCING ALUMINUM BY ELECTROLYSIS 审中-公开
    紧凑型服务模块及其用于通过电解制造铝制品的设备

    公开(公告)号:US20140231268A1

    公开(公告)日:2014-08-21

    申请号:US14348381

    申请日:2012-09-24

    Applicant: E.C.L.

    Inventor: Stéphane David

    CPC classification number: C25C3/20 B66C17/08 C25C3/10 C25C3/125 C25C3/14

    Abstract: A pot tending module for an aluminum production plant comprising a frame and a rotary part including a hopper mounted on said frame so as to pivot about a substantially vertical axis, said rotary part being equipped with at least one tool mounted on a telescopic arm, said pot tending module comprising a first bearing structure to carry all of said rotary part mounted on said frame so as to be pivotable about a substantially vertical axis, a fixed member of said telescopic arm being mounted on a second bearing structure of said rotary art through attachment means fixed to an attachment part of said fixed member placed between the ends of said fixed member. A pot tending machine, a port tending assembly comprising the pot tending module described above, and use of said pot tending assembly.

    Abstract translation: 一种用于铝生产设备的罐式组件,包括框架和旋转部件,旋转部件包括安装在所述框架上的料斗,以围绕基本垂直的轴线枢转,所述旋转部件装备有安装在伸缩臂上的至少一个工具,所述工具安装在伸缩臂上, 罐倾斜模块包括第一轴承结构,以承载安装在所述框架上的所有旋转部件,以便围绕基本垂直的轴线枢转,所述伸缩臂的固定构件通过附接安装在所述旋转工艺的第二轴承结构上 固定到所述固定构件的安装部分的装置,所述固定构件设置在所述固定构件的端部之间。 一种罐式整烫机,一种包括上述罐式调料组件的端口组合装置,以及所述罐式组装件的使用。

    SYSTEM, METHOD AND APPARATUS FOR MEASURING ELECTROLYSIS CELL OPERATING CONDITIONS AND COMMUNICATING THE SAME
    7.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR MEASURING ELECTROLYSIS CELL OPERATING CONDITIONS AND COMMUNICATING THE SAME 审中-公开
    用于测量电解槽操作条件并进行通信的系统,方法和装置

    公开(公告)号:US20130319851A1

    公开(公告)日:2013-12-05

    申请号:US13854252

    申请日:2013-04-01

    CPC classification number: C25C7/06 C25C3/14 C25C3/20 C25D21/12

    Abstract: System, method and apparatus for measuring electrolysis cell operating conditions and communicating the same are disclosed. The system includes a selectively positionable member coupled to an analytical apparatus, wherein the selectively positionable is configured to move the analytical apparatus into and out of physical communication with a bath. The system may also include a crust breaker for breaking the surface of a bath and an electronic device for measuring bath level.

    Abstract translation: 公开了用于测量电解池操作条件并进行通信的系统,方法和装置。 该系统包括耦合到分析装置的可选择性定位的构件,其中可选择定位的构件被配置为使分析装置移入和移出与浴的物理连通。 该系统还可以包括用于破坏浴表面的外壳断裂器和用于测量浴液面的电子装置。

    CRUST BREAKING DEVICE
    8.
    发明申请
    CRUST BREAKING DEVICE 有权
    破碎装置

    公开(公告)号:US20120292834A1

    公开(公告)日:2012-11-22

    申请号:US13510741

    申请日:2010-10-28

    Applicant: Peter Palsson

    Inventor: Peter Palsson

    CPC classification number: C25C3/14 Y02P10/262

    Abstract: A crust breaking device for metal melts includes a pneumatic cylinder having a cylinder housing, a piston, which is axially displaceable within the cylinder housing, and a piston rod, which is fastened to the piston. The piston rod is guided by the cylinder housing and movable between a retracted final position and an extended final position. The device includes an electronic control unit and a valve arrangement, which can be actuated via the electronic control unit and is connected via control lines to front and rear pressure chambers inside the cylinder housing. The device further includes at least one metal plate that is fixedly arranged within the cylinder housing in order to define a final position of the piston or the piston rod. The metal plate and the piston are electrically connected to the control unit such that a contact of the piston with the metal plate closes a circuit.

    Abstract translation: 用于金属熔体的外壳破碎装置包括气缸,其具有气缸壳体,可在气缸壳体内轴向移动的活塞以及紧固于活塞的活塞杆。 活塞杆由气缸壳体引导并在缩回的最终位置和延伸的最终位置之间移动。 该装置包括电子控制单元和阀装置,其可以经由电子控制单元被致动并且经由控制线连接到气缸壳体内的前后压力室。 该装置还包括至少一个金属板,其固定地布置在气缸壳体内,以便限定活塞或活塞杆的最终位置。 金属板和活塞电连接到控制单元,使得活塞与金属板的接触闭合电路。

    System and method for measuring alumina qualities and communicating the same
    9.
    发明授权
    System and method for measuring alumina qualities and communicating the same 有权
    用于测量氧化铝质量并进行通信的系统和方法

    公开(公告)号:US08088269B1

    公开(公告)日:2012-01-03

    申请号:US12854612

    申请日:2010-08-11

    CPC classification number: C25C3/14 C25C3/20

    Abstract: System and method for measuring alumina qualities and communicating the same are disclosed. In one example, a system includes an aluminum electrolysis cell, a feeder configured to supply a feed stock using a feed stream to the aluminum electrolysis cell, and a measurement device in communication with the feed stream, the measurement device adaptable to receive, release, and determine at least one attribute associated with the feed stock.

    Abstract translation: 公开了用于测量氧化铝质量并使其连通的系统和方法。 在一个示例中,系统包括铝电解池,供给器,其被配置为使用进料流将供给原料供应到铝电解池,以及与进料流连通的测量装置,该测量装置适于接收, 并且确定与所述原料相关联的至少一个属性。

    Device for Measuring the Metal Level in a Reduction Basin
    10.
    发明申请
    Device for Measuring the Metal Level in a Reduction Basin 审中-公开
    用于测量还原盆中金属含量的装置

    公开(公告)号:US20110073466A1

    公开(公告)日:2011-03-31

    申请号:US12747611

    申请日:2008-12-11

    Applicant: Peter Palsson

    Inventor: Peter Palsson

    CPC classification number: C25C3/14 C25C3/20

    Abstract: The invention relates to an arrangement for producing aluminium, comprising a cathodic vessel, anode means, an electricity source for generating a direct current between the cathodic vessel and the anode means in order to obtain molten aluminium from a bath, and a subassembly for breaking a crust formed in the area of the anode means during the production. Said subassembly encompasses a chisel which is operated by means of a pneumatic cylinder comprising a sensor for sensing the lift of a piston rod of the cylinder and is electrically connected to a terminal of an electronic unit. Another terminal of the electronic unit is connected to the cathodic vessel in order to generate an alternating current between the chisel and the cathodic vessel and measure the potential and/or the alternating current there-between. The chisel has means for forming an electrode in the bottom zone as well as electronic connecting means for connecting the electrode to one terminal of the electronic unit.

    Abstract translation: 本发明涉及一种用于生产铝的装置,包括阴极容器,阳极装置,用于在阴极容器和阳极装置之间产生直流电的电源,以便从浴中获得熔融铝,以及用于破坏阴极容器的子组件 在生产期间在阳极区域形成的外壳。 所述子组件包括凿子,其通过气缸操作,所述气动缸包括用于感测所述气缸的活塞杆的升程的传感器,并且电连接到电子单元的端子。 电子单元的另一个端子连接到阴极容器,以便在凿子和阴极容器之间产生交流电流并测量其间的电位和/或交流电流。 凿子具有用于在底部区域中形成电极的装置以及用于将电极连接到电子单元的一个端子的电子连接装置。

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