ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Recent progress in research on the theory of aluminum electrolysis

K. Grjotheim and C. Krohn

Tech. Hochsch., Trondheim, Nor.

Abstract: Some problems of the electrolytic production of Al were studied. The effects of the structure of pure cryolite melt, the reactions occurring at the electrodes, the equil. potentials on the cathode between metallic Na and Al in the melt, and the secondary reactions at the anode responsible for decreased current efficiency during of Al production are described. The revised phase diagram of Na₃AlF₆-Al₂O₃ and the phase diagram of the ternary reciprocal system NaF-AlF₃-Al₂O₃-Na₂O are presented. The max. soly. of Al₂O₃ 960-1000° was at the ratio of NaF:AlF₃ of 3:1. The effects of addns. of LiF, NaF, BeF₂, MgF₂, CaF₂, BaF₂, AlF₃, NaCl, and BaCl₂ were detd.

Full paper in Portable Document Format: 2111a762.pdf (in German)

Chemical Papers 21 (11) 762–773 (1967)