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Feb 28, 2025
Electrowinning nickel is a process in which nickel ions in a nickel-containing solution are reduced and deposited onto the cathode surface under the influence of direct current, forming a layer of metallic nickel. The process uses insoluble anodes (such as lead alloys or graphite), and the raw materials include nickel sulfate or nickel hydroxide (MHP) and other non-sulfide nickel materials.
Nickel sulfate solution or nickel hydroxide is used to prepare an electrolyte based on a sulfate system, with concentration and acidity adjusted according to process requirements. Inert materials such as lead alloy or graphite serve as the anode, while conductive metal materials like stainless steel or titanium plates are used as the cathode.
Within the electrolytic cell, a direct current is applied: oxidation reactions (such as oxygen evolution) occur at the anode, while nickel ions are reduced and deposited as metallic nickel at the cathode. Electrolytic diaphragm bags (such as those produced by Bolian) are used to control ion migration, thereby improving the efficiency of nickel purification and the quality of the deposited layer.
Industrial Raw Material
Used as a key raw material for low-grade stainless steel, partially replacing the demand for electrolytic nickel.
Manufacturing Applications
Applied in automotive parts, hardware products, and electronic devices, valued for its high purity, dimensional stability, and smooth surface finish.
Specialty Fields
Used in electroplating, alloy preparation, catalysts, and anti-corrosion materials such as ceramics and specialized chemical containers.
Bolian’s electrolytic diaphragm bags are designed to meet the needs of various production processes and are widely applicable to both soluble anode and insoluble anode systems for electrolytic copper, electrolytic nickel, electrolytic cobalt, and more.
