Copper removal method of nickel solution

Abstract

The invention discloses a copper removal method of a nickel solution. According to the method, a thioacetamide and sodium sulphide complex copper removal agent is adopted, copper removal residues are added for copper removal under the action of ultrasonic waves, and the copper concentration of the solution is lower than 1 mg / L after copper removal.

Description

technical field

[0001] The invention relates to a method for removing copper from a nickel solution. Background technique

[0002] Nickel is an important raw material for the production of many industrial products. In the production process of nickel, qualified electrolyte is the prerequisite to ensure the quality of nickel. Copper is contained in nickel solution, and copper has obvious influence on the quality of nickel. Therefore, decoppering of nickel solution is an essential process for nickel production. At present, the main methods of copper removal from nickel solution include copper removal from anode slime and (or) nickel concentrate, and copper removal from active nickel sulfide. The former has poor decopper effect, large amount of slag, difficult slag treatment, and loss of platinum group metals in the process of slag treatment; the latter needs to prepare active nickel sulfide in dilute solution, and the prepared active nickel sulfide must be timely Use, other...