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Nickel residual electrode treatment method

A treatment method and nickel anode technology, which is applied in the direction of photographic process, instrument, photographic auxiliary process, etc., can solve the problems of poor crushing effect of nickel anode, low screening rate of anode slime, and long process flow, etc., to reduce flue gas Treatment cost, complete separation of nickel and copper, and short process flow

Active Publication Date: 2019-06-25
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new treatment method for nickel anodes in order to solve the problems of poor nickel anode crushing effect, low anode slime screening rate and long process flow in the existing nickel anode anode treatment process

Method used

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  • Nickel residual electrode treatment method

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Experimental program
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Effect test

Embodiment 1

[0020] A kind of nickel anode residue treatment method provided by the present embodiment, the specific operation process is:

[0021] Step 1. After concentrating the nickel residue produced in the electrolysis process of the nickel diaphragm, the continuous fixed

[0022] Feed the material, bake at 70°C for 10 hours, and perform a sieve after the moisture content of the anode slime on the surface of the nickel anode is 12wt%, to remove the anode slime. Select a single sieve hole area of ​​100mm for one screening 2 The circular sieve holes are used to obtain anode slime and nickel anode residue, and the anode slime is sent to the anode slime silo for storage;

[0023] Step 2. First coarsely crush the residual nickel pieces in step 1 until the particle size is ≤150mm, so that part of the copper ears

[0024] The wire is stripped from the nickel anode block, and then finely crushed to a particle size of ≤35mm, so that the copper ear wire in the nickel anode is completely strip...

Embodiment 2

[0029] A kind of nickel anode residue processing method provided by this embodiment, its implementation steps are roughly the same as embodiment 1, the difference is:

[0030] Step 1: Bake the nickel anode at 120°C for 4 hours until the anode slime on the surface of the nickel anode contains water

[0031] A sieve is carried out after the rate is 8wt%; a single sieve area is selected as 400mm for a sieve 2 square sieve holes;

[0032] In step 2: coarse particle size < 120mm, fine particle size < 20mm;

[0033] The main technical index of the nickel anode after adopting the present embodiment method to process is:

[0034] Anode slime removal rate: 95.3%, copper lug wire sorting rate: 98.3%, anode slime carrying rate of nickel anode scrap return: 9.97wt%.

Embodiment 3

[0036] A kind of nickel anode residue processing method provided by this embodiment, its implementation steps are roughly the same as embodiment 1, the difference is:

[0037] Step 1: Bake the nickel anode at 100°C for 6 hours, and wait until the anode slime on the surface of the nickel anode contains water

[0038] A sieve is carried out after the rate is 10wt%; a single sieve area is selected as 150mm for a sieve 2 circular sieve holes;

[0039] In step 2: coarse particle size < 80mm, fine particle size < 10mm;

[0040] The main technical index of the nickel anode after adopting the present embodiment method to process is:

[0041] Anode slime removal rate: 96%, copper lug wire sorting rate: 98.7%, anode slime carrying rate of nickel anode scrap return: 9.01wt%.

[0042] The above results show that the method of the present invention is used to treat the nickel anode residue, the nickel anode residue crushing effect is good, the nickel-copper separation is complete, the d...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/06C25C1/08C22B7/00C22B15/00C22B23/00
CPCY02P10/20
Inventor 王瑞林顾明杰张军耿文杰赵雷刘军
Owner JINCHUAN GROUP LIMITED
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