Study on comprehensive utilization of cobaltiferous slag

Abstract

As a part of comprehensive utilization of concentrate linnaeite, this paper mainly discussed the theoretical bases and technical process conditions of separation of cobalt and nickel by two-section extraction with N₂₃₅ and extraction of copper with Lix984 after changing sulfate system containing cobalt into chloride one, and solved the difficulty of removing Mg²⁺. Pure CoCl₂ solution for preparation of cobalt soaps was produced in this way, and chemical products of copper and nickel such as CuCl₂ · 2H₂O,NiCl₂ · 6H₂O were by-produced. It has many advantages, such as fewer reagents, high recovery yield of metals. It is an economical way for comprehensively recovering valuable metals of concentrate linnaeite.

Keywords

concentrate linnaeite / extraction / cobalt chloride / copper chloride / nickel chloride