Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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COMPUTER MODELLING OF ELECTRICAL FIELDS OF ALUMINIUM REDACTION CELL WITH CARBON INSERRTS IN INTERELECTRODES SPACE

Polyakov P.V. 1 Koshur V.D. 1 Popov Y.N. 2 Ostrovskiy I.V. 1
1 Siberian Federal University
2 Light Metals Ltd.
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.