METHOD AND SYSTEM FOR PREPARING CARBONYL NICKEL POWDER USING LATERITE-NICKEL ORE

摘要

Provided is a method and system for preparing a carbonyl nickel powder using laterite-nickel ore. The method comprises: (1) mixing and pelletizing laterite-nickel ore, high-sulphur coal, and additives to obtain pellets; (2) reducing the pellets; (3) subjecting the reduced metallized pellets to water quenching-ore grinding-magnetic separation treatments to obtain a nickel iron powder and tailings; and (4) bringing the nickel iron powder into contact with carbon monoxide for reaction, and then performing purification and decomposition treatments so as to obtain the carbonyl nickel powder, with the carbon monoxide being recycled, wherein the use of the high-sulphur coal results in a highly active nickel iron powder, it is not necessary to add any catalyst in the process of producing the carbonyl nickel powder, and the synthesis efficiency is high.