iron separation of valuable metals in laterite ore leaching

摘要

Iron separation of valuable metals in laterite ore leaching The invention provides a process for the leaching of laterite ore, concentrating, tailings or rock residues for the recovery of metals of at least one metal value. be nickel. The laterite or concentrate ore is subjected to a leaching step with a hydrochloric acid-containing leach to nickel leaching of the laterite ore, followed by a liquid / solid separation step. The liquid obtained is subjected to solvent extraction with a dialkyl ketone to obtain an iron-rich and refined solution. Separation of iron from cobalt and nickel is obtained.