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    • 31. 发明申请
    • BUSBAR ARRANGEMENT FOR ALUMINUM ELECTROLYTIC CELLS
    • 铝电解槽的布置布置
    • WO1991005889A1
    • 1991-05-02
    • PCT/CA1990000351
    • 1990-10-12
    • ALCAN INTERNATIONAL LIMITED
    • ALCAN INTERNATIONAL LIMITEDBOIVIN, Richard, F.HUNI, Jean-Paul, R.LEBLANC, Robert
    • C25C03/16
    • C25C3/16
    • The invention relates to busbar arrangements for aluminum alectrolytic cells. In a first aspect, the invention provides at least one generally horizontal collector busbar (15A-15D, 16A-16D) on each side of the cell and a number of current tapping points (18A-18D, 19A-19D) along each collector busbar so that current flows along the collector busbar in opposite directions on each side of the taps. This produces changes of sign in the vertical component of the magnetic field acting on the pad in the longitudinal direction and helps to prevent pad instabilities. In a second aspect, the current taps for the collector busbars (18A-18D, 19A-19D) are vertically disposed so as to convey current well below the level of the metal pad (17) so that adverse magnetic effects caused by further distribution of the current are minimized. In a third aspect, when the cells are arranged in a row, current is conveyed between cells in a round-end under-cell crisscross arrangement with long horizontal runs (29A, 27B') of the busbars of adjacent cells being positioned close together with currents flowing in opposite directions to counteract adverse magnetic effects.
    • 本发明涉及铝电解池的母线装置。 在第一方面,本发明在单元的每一侧提供至少一个大体上水平的收集器汇流条(15A-15D,16A-16D)和沿着每个收集器汇流条的多个电流出口点(18A-18D,19A-19D) 使得电流沿着集电母线在水龙头的每一侧沿相反方向流动。 这产生在纵向上作用在焊盘上的磁场的垂直分量中的符号变化并且有助于防止焊盘不稳定性。 在第二方面,用于收集器母线(18A-18D,19A-19D)的电流抽头被垂直地布置,以便将电流输送到金属焊盘(17)的电平以下,从而使电流进一步分配 电流最小化。 在第三方面,当电池被排列成一排时,电流在圆形细胞内十字交错布置的细胞之间传送,相邻电池的母线的长水平行(29A,27B')与 电流沿相反方向流动以抵消不利的磁效应。
    • 32. 发明申请
    • COOLANT CONTAINMENT APPARATUS FOR ROLLING MILLS
    • 用于滚筒的冷凝器容纳装置
    • WO1991005621A1
    • 1991-05-02
    • PCT/CA1990000340
    • 1990-10-05
    • ALCAN INTERNATIONAL LIMITED
    • ALCAN INTERNATIONAL LIMITEDCROSATO, BrunoHARRISON, Gordon
    • B21B27/10
    • B21B27/10
    • Coolant containment apparatus for a rolling mill in which aqueous coolant liquid is sprayed onto the upper and lower work roll (11, 12 respectively) surfaces by upper and lower spray heads (24, 28 respectively) only on the exit side of the mill, including an enclosure (32) maintained at subatmospheric pressure and surrounding the upper spray head (24) and adjacent upper work roll (11) and backup rool (10) surfaces, upper and lower air dam members (40, 42 respectively) extending along the edges of the enclosure (32) above and below the spray head to define narrow air gaps at the roll surfaces, slippers (44) connected to ends of the dam members and in rubbing contact with the rolls to maintain the gap widths constant, and seal members (48) mounted on the roll supports (15) at the ends of the mill and cooperating with the enclosure to confine the enclosure interior. A wiper (50) removes coolant liquid from the upper work roll on the entry side of the mill, while collectors (52) catch and remove coolant spraying through the ends of the roll bite (18) at the exit side of the mill, and air is blown into the roll bite on the exit side to move coolant liquid from the surface of an emerging rolled metal strip (20) into the collectors. Below the mill pass line, a shield (58) protects the rolled metal strip from coolant from the lower spray head (28).
    • 38. 发明申请
    • ULTRASONIC PROBES FOR USE IN HARSH ENVIRONMENTS
    • 超声波探测器用于海洋环境
    • WO1997008546A1
    • 1997-03-06
    • PCT/CA1996000583
    • 1996-08-30
    • ALCAN INTERNATIONAL LIMITED
    • ALCAN INTERNATIONAL LIMITEDPARENT, LucPELOQUIN, GuyTREMBLAY, GillesVAILLANCOURT, Andre
    • G01N29/24
    • G01N29/2437G01N29/032G01N29/228G01N29/28G01N2291/02416G01N2291/0252G01N2291/02809G01N2291/045G01N2291/048G01N2291/101G01N2291/102G01S7/521G10K11/004G10K11/02
    • An ultrasonic device for detecting concentrations of solids or positions of solid/liquid interfaces in liquid media, particularly Bayer process liquids. The device comprises at least one piezoelectric element provided with electrodes; electrical circuit elements connected to the electrodes for conveying electrical signals, in use, to and from control apparatus; an ultrasound-transparent window, made of glassy carbon, positioned adjacent to the or each piezoelectric element; a protective matrix, preferably of epoxy resin, embedding and surrounding said the or each piezoelectric element and the electrodes while allowing ultrasonic waves to pass through the or each adjacent window to or from the piezoelectric element; and an external protective cover, preferably comprising an elastomer that is resistant to caustic alkali and has a smooth and non-porous surface, forming an exterior of the device except at the or each window. The use of glassy carbon for the windows makes the probes resistant to corrosion and scaling without impeding the effectiveness of the device. Further improved scaling resistance is provided by an elastomeric material preferably used as the external protective cover.
    • 用于检测液体介质,特别是拜耳法处理液体中固体或固体/液体界面位置的超声波装置。 该装置包括至少一个设置有电极的压电元件; 连接到电极的电路元件用于在使用中传送和传出来自控制装置的电信号; 与玻璃碳制成的超声波透明窗,邻近或每个压电元件定位; 优选环氧树脂的保护基体,包围并围绕所述压电元件和电极,同时允许超声波穿过或相邻的窗口通向压电元件或从压电元件穿过; 以及外部保护罩,优选地包括耐苛性碱的弹性体,并且具有光滑且无孔的表面,形成除了在该窗口或每个窗口之外的装置的外部。 玻璃碳用于窗户使得探头能够抵抗腐蚀和结垢,而不会妨碍设备的有效性。 通过优选用作外部保护盖的弹性体材料提供进一步改善的抗结垢性。
    • 39. 发明申请
    • COATING STRIP MATERIAL WITH PROTECTIVE/DECORATIVE LAYERS WHILE AVOIDING USE OF SOLVENTS
    • 用防腐剂涂层保护/装饰层的涂层条纹材料
    • WO1996015858A1
    • 1996-05-30
    • PCT/CA1995000659
    • 1995-11-23
    • ALCAN INTERNATIONAL LIMITED
    • ALCAN INTERNATIONAL LIMITEDINNES, Robert, ArthurBROCKMAN, Neil, Louis
    • B05C05/02
    • B05C5/0295B05C5/001B05C5/0254B05C9/04B05C11/1042
    • A process and apparatus for coating a surface of an elongated strip article, e.g. aluminum sheet, with a layer of solid polymer material. The process involves heating the polymer to produce a melt having a viscosity of at least 1000 centipoise when measured according to ASTM D4440 at 1 radian per second, extruding the melt onto a moving surface of the strip article through an elongated slot in a coating head having an extended surface adjacent to the slot arranged at an angle to the moving surface to form a coating gap converging in the direction of movement, thereby forming a coating on the strip article, and pushing the coating head towards the surface of the strip article as the melt is extruded as the coating onto the surface from the slot to reduce the coating thickness to a desired range by pressing the extended surface of the coating head onto the coating as the coating is formed. The apparatus includes coating heat, provided with a heater to maintain the viscosity of the melt, and load application device for the coating head, as well as means for melting the polymer and supplying the melt under pressure and at the desired temperature to the coating head. The process and apparatus allows strip articles to be coated with thin (1-100 microns) coatings of polymer materials without employing liquids as solvents or the like that cause atmospheric pollution problems.
    • 用于涂覆细长带状物品的表面的方法和设备,例如。 铝板,具有一层固体聚合物材料。 该方法包括加热聚合物以产生粘度至少为1000厘泊的熔体,当根据ASTM D4440以每秒1弧度测量时,将熔体挤出到带材制品的移动表面上,该细长的槽在具有 与所述槽相邻的延伸表面,所述延伸表面与所述移动表面成一定角度设置,以形成沿所述移动方向收敛的涂层间隙,从而在所述带状物品上形成涂层,并且将所述涂覆头朝所述带状物品的表面推压, 熔融物作为涂层从槽挤出到表面上,以通过在涂层形成时将涂覆头的延伸表面压到涂层上将涂层厚度减小到所需范围。 该设备包括涂覆热量,设置有加热器以维持熔体的粘度,以及用于涂覆头的负载施加装置,以及用于熔化聚合物并在压力下并在所需温度下将熔体供应到涂覆头的装置 。 该方法和设备允许带状制品涂覆聚合物材料的薄(1-100微米)涂层,而不使用引起大气污染问题的液体作为溶剂等。