Patent ID: 8647481
Filing Date: 2014-02-11
Classification: C25C

Abstract:
1. Pot tending machine for a series of electrolysis cells designed for the production of aluminum by igneous electrolysis including: a) an overhead traveling crane which can be relocated above said electrolysis cells, b) a tool carriage, which moves along said overhead traveling crane and on which is fixed a service module including tools; c) a tapping winch, interdependent of said overhead traveling crane, designed to grasp and position near to cell a tapping assembly including a ladle, a tapping tube and a vacuum device designed to create a partial vacuum in said ladle, in order to suck the liquid aluminum through said tapping tube and pour it into said ladle; d) a freestanding device able to generate compressed air, in order to actuate said tools and said vacuum device; characterized in that said compressed air generating device includes a first compressor, able to provide a flow of compressed air at least equal to a minimum air flow necessary for uses of the pot tending machine other than for tapping, the air being compressed to a required pressure p, and at least one second compressor fitted to a pneumatic circuit of said pot tending machine so that while operating simultaneously with said first compressor the unit provides a flow of compressed air at least equal to a minimum output of air necessary during tapping, compressed to pressure p′ which makes it possible to create the partial vacuum targeted within the ladle.