Casting mould and copper anode for producing high-purity copper

Abstract

The invention relates to a casting mould (7) for producing copper anodes (1) for producing high-purity copper, having—a first, extensive cavity (8), which is delimited by two side faces oriented parallel to one another, and—two second cavities (9) which are fluidically connected to the first cavity, are arranged on a peripheral side of the first cavity (8) at different corners and extend laterally outwardly away from the first cavity (9), characterized in that—a core (20) is provided centrally in each of the second cavities (9), said core (20) subdividing each second cavity (9) at least partially to form a circumferentially closed ring shape.

Listing of claims: 
     
         1 . A casting mould for producing copper anodes for producing high-purity copper, the casting mould comprising:
 a first flat cavity, which is delimited by two lateral surfaces aligned in parallel with each other;   two second cavities, which are fluidically connected to the first flat cavity, are arranged on different corners on a peripheral side of the first flat cavity, and extend laterally outwardly away from the first flat cavity; and   a core, which is respectively provided centrally in a respective second cavity of the second cavities, the core sub-dividing the respective second cavity at least partially into a closed annular shape in the peripheral direction.   
     
     
         2 . The casting mould according to  claim 1 , wherein:
 the core completely sub-divides the second cavity into the closed annular shape in the peripheral direction.   
     
     
         3 . The casting mould according to  claim 1 , wherein:
 the core sub-divides the second cavity into a first portion having a closed annular shape and a second flat portion, wherein the second flat portion is arranged laterally on the first portion.   
     
     
         4 . The casting mould according to  claim 1 , wherein:
 the core is sub-divided into two partial cores by a gap.   
     
     
         5 . The casting mould according to  claim 4 , wherein:
 the gap is aligned at an angle of 0 to 45 degrees to a longitudinal central axis of the first flat cavity.   
     
     
         6 . A copper anode for producing high-purity copper, the copper anode comprising:
 an anode sheet; and   at least two holding arms, wherein:   at least one recess is provided in at least one of the holding arms, and   the holding arms are formed as one part with the anode sheet.   
     
     
         7 . The copper anode according to  claim 6 , wherein:
 the recess has a shape which corresponds to a scaled-down outer shape of the holding arm.   
     
     
         8 . The copper anode according to  claim 6 , wherein:
 the recess is at least partially closed by a supporting wall.   
     
     
         9 . The copper anode according to  claim 8 , wherein:
 the depth of the recess down to the supporting wall corresponds to at least half of the thickness of the holding arm perpendicular to a plane extending through the anode sheet.   
     
     
         10 . The copper anode according to  claim 6 , wherein:
 the recess is at least partially formed as a through opening.   
     
     
         11 . The copper anode according to  claim 6 , wherein:
 the recess is sub-divided into two partial recesses by a stiffening rib.   
     
     
         12 . The copper anode according to  claim 11 , wherein:
 the stiffening rib is aligned at an angle of 0 degrees to 45 degrees to a central longitudinal axis of the anode sheet running between the holding arms.   
     
     
         13 . The copper anode according to  claim 6 , wherein:
 the recess is dimensioned such that the holding arms on their side of the electrical contact surface at least partially have a greater wall strength in a plane I extending through the anode sheet than on the side which does not have an electrical contact surface.   
     
     
         14 . The copper anode according to  claim 6 , wherein:
 the holding arms have a constant thickness with regards to a plane extending through the anode sheet.   
     
     
         15 . The copper anode according to  claim 6 , wherein:
 the copper anode is formed as a cast in a casting mould, the casting mould comprising:   a first flat cavity, which is delimited by two lateral surfaces aligned in parallel with each other;   two second cavities, which are fluidically connected to the first flat cavity, are arranged on different corners on a peripheral side of the first flat cavity, and extend laterally outwardly away from the first flat cavity; and   a core, which is respectively provided centrally in a respective second cavity of the second cavities, the core sub-dividing the respective second cavity at least partially into a closed annular shape in the peripheral direction.   
     
     
         16 . The casting mould according to  claim 1 , the casting mould further comprising a plurality of cores, comprising the core, each of the cores is respectively provided centrally in a respective one of the second cavities, the respective core sub-dividing the respective second cavity at least partially into a closed annular shape in the peripheral direction.