ALUMINIUM CELL HEARTH Russian patent published in 1998 - IPC

FIELD: aluminium production. SUBSTANCE: carbonaceous hearth of aluminium cell has hearth unit with cross section edges in the form of isosceles trapezium whose large base is formed by working face of hearth unit turned to anode and small base - by lower face of hearth unit. Plane of outer lateral face of unit is parallel relative to plane of inner lateral face of lengthwise groove. Edges of lengthwise vertical section are in the form of trapezium whose large base is formed by working face turned to anode and small base - by lower face of hearth unit. Inner end of current leading rod is flush-mounted in inner end face of hearth unit. EFFECT: enhanced quality of aluminium, increased operational life period of cell. 2 cl, 2 dwg, 1 tbl