| 摘要 |
<p>The present invention is to provide a method and an apparatus for producing metal, primarily aluminium, through a gas anode system using reducing gases. The gas anode system has been created not only to carry electrical current, but also to convey and distribute reducing gas, for instance, natural gas to the anode - electrolyte interface. The anode is made of electrically conductive materials, preferentially, graphite or carbon based materials with connecting pores or channels for gas distribution in high temperature applications. However, the carbon anode itself is not normally involved in the anodic reaction. The manner of the distribution of the reducing gas enables protection of the carbon anode from the anodic oxidation. The invention renders possible a more effective, environment-friendly aluminium reduction process with reduced CO2 emission and lower consumption of the anode materials. The invention can also extend to other metals reduction processes where said reducing gas is involved.</p> |
