The role of surfactants in intensifying and increasing the efficiency of the electroflotation extraction of sparingly soluble lanthanum compounds

Resumo

Kinetic trends of electroflotation extraction of sparingly soluble lanthanum compounds from solutions containing NaCl, NaNO³, Na²SO⁴, and Na²CO³ were established and studied. The role of surfactants of anionic, cationic and nonionogenic natures, as well as flocculants (first, of anionic and cationic type) that depend on background electrolyte composition (sulfate, chloride, carbonate, nitrate) is determined as positive. The electroflotation extraction of lanthanum hydroxide is shown to proceed with an degree of extraction of up to 96%.