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Компьютерное моделирование электрических полей алюминиевых электролизеров с углеродными вставками в межэлектродном зазоре

Компьютерное моделирование электрических полей алюминиевых электролизеров с углеродными вставками в межэлектродном зазоре

Abstract

By solving Laplace equation using 2D finite difference elements method with proper boundary conditions finite difference elements field of electrical potentials and vectors of current densities for aluminium cells with prebaked anodes are received. Estimations of potential and current changes due to the replacement of high conductivity inserts into interelectrodes space which position from aluminium into the bath and decrease the interpolar distance are given. Electrical conductivities were considered independent on temperature and current density was close to industrial ones. From calculations is evident that carbon inserts with the hight 25 mms provide the voltage drop 0,8 Vs, giving the energy consumption saving 2,56 kW h/kg Al. Admitted current efficiency is 0,93.

Решением уравнения Лапласа методом конечных элементов для 2D-модели с соответствующими граничными условиями получены поля электрических потенциалов и векторы плотности тока алюминиевых электролизёров с обожженными анодами. Произведена оценка изменений потенциалов и токов при размещении в межэлектродном пространстве высокопроводящих вставок, выступающих из алюминия в электролит и уменьшающих межэлектродное расстояние. При решении электропроводность принималась не зависящей от температуры, а плотность тока задавалась близкой к промышленной. Из расчётов следует что углеродные вставки, выступающие над металлом на высоту 25 мм, обеспечивают снижение напряжения на ванне около 0,8 В, давая расчётную экономию энергии, равную 2,56 кВт ч/т Al при выходе по току 0,93.

Keywords

УГЛЕРОДНЫЕ ВСТАВКИ., ЭЛЕКТРИЧЕСКИЕ ПОЛЯ, КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ, АЛЮМИНИЕВЫЙ ЭЛЕКТРОЛИЗЁР

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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!
0
Average
Average
Average
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