Method for producing high-quality nickel button

Abstract

The invention discloses a method for producing a high-quality nickel button. The method for producing the high-quality nickel button comprises the following steps: taking a sulfate-chloride mixed system as an electrolyte, cutting Ni9950 electrolytic nickel into small nickel blocks, filling the small nickel blocks into a titanium basket as an anode, taking a surface-treated composite-metal-coated nickel button polar plate as a cathode, and electrolyzing to produce a high-quality nickel button product. According to the nickel button produced through the method, the main grade of nickel + cobalt reaches 99.98% or above, and impurity elements all meet the Ni9997 standard requirement; and the nickel button is easy to strip, smooth in appearance and free of defects. The electrolyte does not need purification and impurity removal, and the operation is simple; the Ni9950 with a relatively low value is converted into the Ni9997 high-quality nickel button product with a high additional value, so that considerable economic benefits are generated; and the cell voltage is low in the electrolysis process, so that the electric energy consumption is reduced. The method for producing the high-quality nickel button has good economic benefits and popularization and application prospects.

Description

technical field [0001] The invention relates to a method for producing high-quality nickel buttons, belonging to the technical fields of hydrometallurgy and electrochemistry. Background technique [0002] As a nickel-plated material, the electrolytic nickel buckle has the advantages of smooth surface, high density in the basket, good electrical contact performance, uniform current distribution, uniform drop when dissolving, and no bridge accidents caused by suspended material. Therefore, nickel buttons are more and more widely used in the electroplating industry. At present, the nickel buckles used in my country mainly rely on imports, and the main manufacturers are Vale and the Norwegian Eagle Bridge Refinery. Vale uses the electrolysis process of nickel sulfide soluble anode and cathode sleeve diaphragm bag to produce nickel buckle, the cell voltage is 4.0~5.5V, and the cathode plate is sprayed with thermal curing epoxy paint. The Norwegian Eagle Bridge Refinery adopts t...

AI Technical Summary

Problems solved by technology

[0003] The existing production process mainly has low main grade and high impurity content in the production of nickel buckles; When the buckle is used as an electroplating anode, it is mostly electrochemically dissolved in depth, leaving the outer shell that cannot be dissolved, and there are many residues during use, especially not suitable for high-end electroplating nickel process

In addition, the use of chlorinated medium is used for production, because the temperature of the production process is high, the chloride ions are easy to volatilize, the production equipment and auxiliary equipment are corroded, and the production environment is poor.

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