HYDROMETALLURGICAL PROCESS OF NICKEL LATERITE ORE

摘要

A hydrometallurgical process for a nickel laterite ore to recover nickel and cobalt from the nickel laterite ore by a High Pressure Acid Leach comprising an ore treatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step, and a final neutralization step, which comprises: step (A): (A) separation and recovery, by a physical separation method, of particles comprising at least one of a silica mineral, chromite or a magnesium silicate ore in an ore slurry produced from the ore treatment step.