Method of leaching nickel from oxidized ore, method of manufacturing nickel sulfate, and nickel-leaching agent

Abstract

Provided is a method capable of selectively leaching Ni from an oxidized ore containing Ni and Si. The method of leaching nickel from an oxidized ore according to the present disclosure includes the steps of: preparing a liquid leaching agent containing a hydrogen bond acceptor that has made contact with hydrochloric acid, and a hydrophobic organic compound (provided that unsubstituted alicyclic hydrocarbon compounds and unsubstituted aromatic hydrocarbon compounds are excluded); and contacting an oxidized ore containing nickel and silicon with the leaching agent.

Dependencies are inferred from the claim text.