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Method for producing nickel button by constant current

A technology of constant current and nickel buckle, which is applied in the direction of photographic technology, equipment, photographic auxiliary technology, etc., can solve the problems of difficult expansion of production capacity and scale, inability to realize large-scale production, and high actual current density, and achieve low investment in electrical equipment , Eliminate graining at the edge of the nickel buckle, and achieve high output per slot

Active Publication Date: 2007-03-28
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the actual production process, the current needs to be frequently raised and lowered, which not only brings inconvenience to the production operation, but also needs to add a lot of DC power supply circuits in order to facilitate the assembly operation, which makes it impossible to achieve large-scale production, and the production capacity of a single slot is also limited. and difficult to scale up
At present, in the production process of nickel button, Φ10mm conductive columns are used, and the center distance of each conductive column is 15mm, so that the actual conductive area of ​​the nickel button plate is small, and the actual current density is large, which is not conducive to the high current. uniform growth of the buckle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The diameter of the nickel buckle conductive column used is Φ15mm, and the distance between the centers of adjacent conductive columns is 30mm; the current intensity is 7500AA; the cathode size: 1050mm×900mm; the number of cathodes per slot: 38 pieces; the actual current density: 320A / m 2 ; Cathode cycle: 8 days; the growth of nickel buckle is uniform.

Embodiment 2

[0014] The diameter of the nickel buckle conductive column used is Φ12mm, and the distance between the centers of adjacent conductive columns is 30mm; the current intensity is 7000A; the cathode size: 1050mm×900mm; the number of cathodes per slot: 38 pieces; the actual current density: 300A / m 2 ; Cathode cycle: 8 days; the growth of nickel buckle is uniform.

Embodiment 3

[0016] The diameter of the nickel buckle conductive column used is Φ20mm, and the distance between the centers of adjacent conductive columns is 30mm; the current intensity is 8000A; the cathode size: 1050mm×900mm; the number of cathodes per slot: 38 pieces; the actual current density: 350A / m 2 ; Cathode cycle: 8 days; the growth of nickel buckle is uniform.

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PUM

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Abstract

The invention relates to a method to produce nickel buckle by using constant current. The diameter of nickel buckle conductive column is 15mm, and the neighbor two columns center distance is 30mm, current density is 300-350A / m2, and current intensity is 7000-8000A. The invention decreases actual current density through expanding actual conductive area. Thus, the edge effect in electrolytic process would be decreased. It has the advantages of equal, easy to operate, low electric device invest, high single groove yield, etc.

Description

technical field [0001] The invention relates to a constant current production method for nickel buckles, which relates to a metallurgical method for producing sulfur-containing or sulfur-free nickel buckles under constant current in pure sulfuric acid medium, chlorinated medium and mixed acid medium by using soluble anode electrolysis and insoluble anode. Background technique [0002] At present, in the process of using insoluble anode and soluble anode electrolysis process to produce sulfur-containing or sulfur-free nickel buttons, in order to ensure the shape requirements of the produced nickel buttons, it needs to be produced under gradient current conditions, and gradient current must be used Improved production technology. Therefore, in the actual production process, the current needs to be frequently raised and lowered, which not only brings inconvenience to the production operation, but also needs to add a lot of DC power supply circuits in order to facilitate the ass...

Claims

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Application Information

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IPC IPC(8): C25C1/08
Inventor 石文堂郭小英丁学锁张延儒
Owner JINCHUAN GROUP LIMITED
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