A process for the operation of an air supply system (1), for a group of cells (4), arranged to feed the individual air demand of each electrolytic cell (2) homogenously through perforated hoses (16) of an isobaric ring (39), wherein each cell operates with process parameters that are adjusted and controlled, among others cell voltage, current density, electrolyte temperature, density and pH, characterized in that it comprises the following steps:
- a. Determining the air demand of each electrolytic cell (2) according to process parameters harmonized with desired quality results of the cathodes harvested;
- b. Measuring the air flow between the entrance and the exit of a flow meter (8) located on the front wall of each cell to calibrate the flow of air determined in step (a), said flow meter (8) having a sphere (15) that floats in a conical translucent tube (14) according to the flow of air fed to the electrolytic cell (2);
- c. Determining the weight of the sphere (15) to be lodged inside flow meter (8), the length of the translucent tube (14) and its
- d. conical angle, so that the sphere (15) is maintained floating steadily at a certain level inside tube (14) with the air flow determined in step (a);
- e. Introducing the sphere (15) determined in step (c) inside flow meter (8);
- f. Calibrating flow meter (8) so that the sphere remains in between a maximum limit (24) and a minimum limit (25) with the air flow determined in step (a) flowing into the electrolytic cell (2).