| 摘要 |
PURPOSE:To simply separate and remove Sb from a soln. acidified with sulfuric acid with selectivity in a high yield in the early stage by bringing the soln. into contact with aromatic polyhydroxy resin. CONSTITUTION:A soln. contg. Sb acidified with sulfuric acid, e.g., an electrolytic soln. used in a stage for electrolytically refining copper is passed through a cylindrical column packed with aromatic polyhydroxy resin as a chelate resin at <=80 deg.C. In the column, the soln. is brought into contact with the chelate resin to remove the Sb. The resulting Sb-free soln. acidified with sulfuric acid is recycled to the refining stage, and the used chelate resin contg. the removed Sb is regenerated with hydrochloric acid and used again. |
