PHYSICAL MODELLING OF PHENOMENA OF NON-ELECTROCHEMICAL TRANSFER IN ALUMINIUM ELECTROLYZERS

There the purposes are to study the non-electrical phenomena in the electrolyzer (the structure and the dynamics of gas-fluid layer, the recycling of electrolyte, the electric field in the electrolyte, the contact surface of electrolyte - anode gas phases); to develop the methods and the devices, which allow to decrease the metal losses. The dynamics of gas-fluid layer and electrolyte has been learned by two-phase physical model. The quantitative quasistatic recycling fields of electrolyte for all main types of aluminium electrolyzers have been obtained. The conversion of electric field at the anode effect has been studied. The criterion equation of dependence of interbace on the dimensional and physicochemical conditions of electrolysis has been obtained. The methods of control over the gasohydrodynamics of aliminium electrolyzers have been developed and have been checked under industrial conditions; the electro-insulated carbonic threshold allowed to increase the current efficiency by 6%, the clad-metal belt on the metal - electrolyte level allowed to rise the current efficiency by 3-4% for the bathes with the Zoderberg's anodes. The application field is the electrolytic production of aluminium.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio