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Further Developments and Advantages Utilizing Slotted Anodes

Authors: Campice, Giovanni;

Further Developments and Advantages Utilizing Slotted Anodes

Abstract

Аноды с пазами используются на алюминиевых заводах, где требуются аноды большого размера. Можно считать, что пазы, являясь внутри анодными разделителями, действуют как тепловые зазоры, чтобы безопасно сглаживать расширения, вызванные изменением температуры. Пазы помогают уменьшить термические напряжения в анодах, тем самым снизив риск образования трещин. Отношение к процедуре прорезки пазов в нижней части анодов сейчас изменилось и становится очень важным, т.к. пазы представляют эффективный способ, чтобы избежать непрерывное газообразование при электролизе алюминия, тем самым снижая накопление газовых пузырей на подошве анодов. По этой причине использование пазов в анодах позволяет снизить электросопротивление электролизера, а также повысить его стабильность. Таким образом, пазы в анодах приводят к снижению потребления электроэнергии при производстве алюминия. Глубина пазов важна, чтобы обеспечить все эти преимущества на протяжении всего срока службы анодов («пазы с полным сроком службы»), в то время как форма пазов, которая определяет направление отвода газа и связанные области влияния, также является важным параметром, чтобы достичь дополнительных преимуществ при управлении электролизером. При прорезке в анодах пазов с уменьшенной шириной снижается количество выбрасываемого углерода. Узкие пазы повышают удельное производство алюминия в расчете на один анод, а также продлевают срок службы анодов

Slotted anodes have been used by smelters that require large size anodes. Being inter-anode separations, slots can be considered acting as expansion gaps to safely absorb the heat-induced expansions. The slots are helping to reduce the thermal stresses in the anodes and thus reducing the risk of cracking. Approach to slots cut in the bottom surface of the anodes has nowadays changed and become extremely important, since they represent effective ways to escape gas continuously formed during Aluminium reduction process, thus reducing the accumulation of gas bubbles underneath the anodes. For this reason the use of slots in the anodes allows to reduce electrical cell resistance as well as to improve cell stability. Slots in the anodes therefore result in reduced electrical power consumption for the Aluminium production. The depth of the slots is important to ensure that these benefits last throughout the entire life of the anodes (“ full-life slots”), while slot shape, which determines the gas escape direction and related areas of influence, is also important to achieve further benefits in pot management. Cutting slots with reduced width reduces the amount of carbon removed from anodes when slots are cut. Narrow slots are improving specific Aluminum production per anode as well as prolonging anodes cycle time

Keywords

anode, машина для прорезки пазов, электролиз алюминия, slots, aluminium reduction, slotting machine, пазы

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
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