Ai. Kononov et Eg. Polyakov, PHYSICAL METHODS OF PREPARING HIGH-PURITY SCANDIUM AND ELECTROREFINING IN HALIDE MELTS, Inorganic materials, 34(10), 1998, pp. 980-986
The physical methods of preparing high-purity scandium (vacuum melting
, vacuum distillation and sublimation, zone melting) are examined and
compared with electrorefining in halide melts. The advantages and draw
backs of the methods are highlighted. The conclusion is made that elec
trorefining in salt melts is a commercially viable technique for produ
cing high-purity scandium.