Study on the inert anode of Cu-Al alloy of potassium cryolite system in low temperature system

The traditional production process of aluminium Hall - H&ault method, electric energy utilization is low and our fleet emissions of greenhouse gases and perfluorinated carbide, research and development the new technology of aluminum electrolytic green become the research hot spot.
Adopting inert anode for aluminum electrolysis can avoid the shortcomings of the traditional process, the alloy anode because it has good thermal conductivity, excellent thermal shock resistance characteristics become inert anode is expected in the high hopes of electrode alloy anode in general can be divided into 4 Ni tomb Cu and re signed by a Cu alloy anode electrolysis to take is to introduce new impurity phase, less tomb is thought to be more promising Cu alloy anode but at the moment, the anode alloy corrosion resistance is poorer, it is difficult to meet the requirement of industrial production, and research alloy anode corrosion mechanism, to improve the corrosion resistance of alloy anode has the important significance of this thesis we in Cu - Al alloy anode in the electrolysis process and to study the electrochemical process, discusses the corrosion mechanism of alloy anode, for development and provide theoretical basis for electrolytic aluminum alloy anode
The purity of 99.9% 300 mesh Ca. Al powder according to the mass ratio of 91:9 mixing proportion, static pressure molding in the grinding tool, pressure of 200 MPa, then under hydrogen atmosphere protection in 1050 Ic sintering 4.0 h get Cu - Al alloy material will Ca - Al alloy materials for machining and polishing and connected with the guide bar, get the anode;
With graphite as the cathode;
The corundum has a pure analysis
KA] F4 + KsAlFs (CIi - 1.3), including A1, the concentration of 203 (industrial grade) for 45 wt9, 5.0 A lab scale under the 700 ℃ of aluminum electrolysis, current density control in 0.5 the Ale, electrolytic Al 3 blade adopts automatic feeding system in the process of continuous adding cyclic voltammograms test to Cu - Al alloy electrode as working electrode;
As the auxiliary electrode of the graphite teeth;
The NifNi several electrodes are used as reference power

Extremely, the three-electrode system cycle voltammetry was performed on the PABSTAT 2273 electrochemical workstation.