INERT ALLOY ANODE USED FOR ALUMINUM ELECTROLYSIS AND PREPARATION METHOD THEREFOR

摘要

The present invention relates to the field of an aluminum electrolysis preparation process. Namely, the present invention relates to embodiments of an inert alloy anode for aluminum electrolysis and embodiments of a process of preparing corresponding anodes. In one embodiment, the invention relates to an inert alloy anode used for aluminum electrolysis consisting of Fe, Cu, Ni and Sn, wherein the content of Fe is 23-40 wt.%, the content of Cu is 36-60 wt.%, the content of Ni is 14-28 wt.% and the content of Sn is 0.2-5 wt.%. In another embodiment, the invention relates to an inert alloy anode used for aluminum electrolysis consisting of Fe, Cu, Ni and Sn, wherein the content of Fe is 40.01-71.88 wt.%, the content of Cu is 0.01-31.88 wt.%, the content of Ni is 28.1-59.97 wt.% and the content of Sn is 0.01-0.19 wt.%. The invention also relates to embodiments of a process of preparing said anodes providing melting and mixing metal Fe, Cu Ni and Sn in corresponding ratios, and then casting the mixture to obtain the inert alloy anode. The technical result consists in reducing resource and material consumption of a preparation process of anodes and in lowering overvoltage in aluminum electrolysis when using the anodes of the invention.