Nickel residual electrode treatment method

Abstract

The invention discloses a nickel residual electrode treatment method. The treatment method comprises the steps that (1) a nickel residual electrode is dried under continuous and quantitative feeding conditions until the anode mud moisture content of the surface of the nickel residual electrode is 8%-12% by weight, first-time screening is carried out, anode mud is removed, the anode mud and a nickel residual electrode block are obtained, and the anode mud is sent to an anode mud bin to be stacked; (2) the nickel residual electrode block in the step (1) is firstly coarsely crushed until the particle size is smaller than or equal to 150 mm, a part of a copper lug wire is peeled off, then fine crushing is carried out until the particle size of is smaller than or equal to 35 mm, and the copperlug wire in the nickel residual electrode is completely peeled off; and (3) the copper lug wire peeled in the step (2) and the nickel residual electrode block are subjected to secondary screening, thecopper lug wire is sorted out, the copper lug wire is sent to a copper lug wire bin to be stacked, and the nickel residual electrode with the copper lug wire sorted out returns to a casting system tobe used for casting a high-sulfonium anode plate. The nickel residual electrode treatment method is good in nickel residual electrode crushing effect, complete in nickel and copper separation, high in anode mud screening rate and short in process flow.

Description

technical field

[0001] The invention belongs to the technical field of nonferrous metallurgy and relates to a method for treating nickel anode residue. Background technique

[0002] In the production of electrolytic nickel by diaphragm electrolysis, high-matte anode plates are electrolyzed to produce nickel residues, which need to be separated from nickel and copper in the early stage because of the copper ear wires. After removing the anode slime, the separated nickel anode residues are returned to the melting and casting system to cast high-matte anode plates for secondary reuse, and the copper ear wires are sold externally. In the prior art, the method for processing nickel residues is to manually sort out the nickel residues with copper ear wires, and smash the nickel residues with a hand hammer, so that the copper ear wires are peeled off from the nickel residues. Come out to realize the separation of nickel and copper. In this process, the crushing rate of nickel anod...

Images