Extraction of Co, Zn, Cd and Hg ions by the molten mixtures of diantipyrylmethane and benzoic acid from thiocyanate solutions

The extraction of cobalt, zinc, cadmium and mercury ions with the molten mixtures of diantipyrylmethane and benzoic acid from thiocyanate solutions was studied. Optimum conditions for phase separation, the formation of a melt, and the extraction of the metal ions were determined. The possibility of quantitative extraction of cobalt, zinc and cadmium ions by diantipyrylalkanes from thiocyanate solutions was shown. The composition of the extracted complex compounds was found; the mechanism of extraction was proposed. (author)