摘要:
The present disclosure includes a method for purifying aluminum. The method includes producing purified aluminum from an aluminum feedstock in an aluminum purification cell and flowing the purified aluminum from a cell chamber of the aluminum purification cell to a purified metal reservoir via an overflow passage, wherein the purified metal reservoir is located internal to the aluminum purification cell. In some embodiments, a feeding reservoir is located internal to the aluminum purification cell and can be accessed via a feeding port located in a refractory top cover of the cell chamber. In some embodiments, the method includes removing the purified aluminum from the purified metal reservoir via a tapping port located in a refractory top cover of the cell chamber. In some embodiments, concomitant with the removing step, the method includes restricting or preventing oxidation of the purified aluminum.
摘要:
This protection device, which is adapted to be placed in front of the anodes, comprises a frame (1) and a plurality of panels (3,6) which are mounted on the frame and are adapted to be displaced with respect to this frame, so as to allow access to said anodes for an operator. According to the invention panels (3,6) comprise a first set of inner panels (3a–3d), as well as a second set of so-called outer panels (6a–6d), said panels being adapted to slide with respect to said frame (1) along a longitudinal direction (XX) of anodes line(s) so that: - in a so-called closing configuration, panels (3,6) form a substantially continuous shield (S) in front of the line of anodes; and - in a so-called access configuration, at least one panel of inner set is at least partially retracted behind at least one panel of outer set, so as to define one passage (P5) for access to at least one of the anodes which are part of said line.
摘要:
A cathode assembly for an electrolysis cell of Hall-Heroult type for producing aluminium, comprises a cathode block rodded or connected with steel collector bars, Cu rods or a metallic collector plate, the cathode block surface comprises partly of a wear resistant composite material so the cathode block can be designed with a lower height, which may have many advantages. A method for producing the cathode assembly is described.
摘要:
A flexible electrical connector assembly is adapted to connect a bus bar of an electrolytic cell to a collector bar of the electrolytic cell. The assembly includes an electrical connector including a plurality of conductive metal sheets, the electrical connector having a collector bar end and a bus bar end. The electrical connector may be adapted for being joined, at the collector bar end, to the collector bar and, at the bus bar end, to the bus bar. The electrical connector may be adapted to implement a change in direction, at a bend along a current-carrying path between the bus bar end and the collector bar end, the bend assisting to define the change in direction as greater than 90 degrees.
摘要:
An electrolysis cell of Hall-Héroult type for producing aluminium having prebaked anodes of a carbonaceous material, and a cathode structure comprising a pot shell made out of a steel material and further having a bottom and sides supported by structural elements such as cradles and beams, wherein the cathode structure further comprises a protective and insulating lining inside the shell and a carbon based cathodic bottom with collector bars embedded therein, and where produced aluminium metal forms a layer onto said cathodic bottom, an electrolytic bath positioned above said aluminium metal where the anodes are in electrical contact with said electrolyte, wherein at least part of the steel pot shell and/or deck plates are made of a ferritic stainless steel (FSS) material. The method relates to a repair procedure for replacing parts of a commonly used carbon steel material with ferritic stainless steel material at least in parts of the steel pot shell and/or deck plates heavily exposed to corrosion and detonation. The replacement procedure can either result in a homogenous or composite material structure in affected areas.
摘要:
In one embodiment, an electrolytic cell for the production of aluminum from alumina includes: at least one anode module having a plurality of anodes; at least one cathode module, opposing the anode module, wherein the at least one cathode module comprises a plurality of cathodes, wherein the plurality of anodes are suspended above the cathode module and extending downwards towards the cathode module, wherein the plurality of cathodes are positioned extending upwards towards the anode module, wherein each of the plurality of anodes and each of the plurality of cathodes are alternatingly positioned, wherein the plurality of anodes is selectively positionable in a horizontal direction relative to adjacent cathodes, wherein the anode module is selectively positionable in a vertical direction relative to the cathode module, and wherein a portion of each of the anode electrodes overlap a portion of adjacent cathodes.
摘要:
Изобретение относится к области цветной металлургии, в частности, к технологическому оборудованию для производства первичного алюминия электролизом, а именно, к способам футеровки катодных устройства электролизеров. Способ футеровки катодного устройства электролизера для получения алюминия включает засыпку теплоизоляционного слоя в кожух катодного устройства, формирование огнеупорного слоя с последующим уплотнением слоев, установку подовых и бортовых блоков с последующей заделкой швов между ними холоднонабивной подовой массой. Согласно заявленному изобретению по первому варианту, между теплоизоляционным и огнеупорным слоями устанавливают упругий элемент из плотного органического вещества. Согласно заявленному изобретению по второму варианту, между теплоизоляционным и огнеупорным слоями устанавливают гибкую графитовую фольгу, а снизу гибкой графитовой фольги устанавливают упругий элемент из плотного органического вещества. Предлагаемые варианты способов футеровки катодного устройства электролизера для получения первичного алюминия позволяют сократить энергозатраты при работе электролизера за счет улучшения стабилизации теплофизических свойств теплоизоляции в цоколе, увеличить срок службы электролизеров.