Plating zinc and zinc alloy in metal industry

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  • Plating zinc and zinc alloy flowsheet


Plating zinc and zinc alloy flowsheet.jpg

Literature: BAT for the Surface Treatment of Metals & Plastics, 2006


Plating zinc and zinc alloy flowsheet2.jpg


Plating zinc and zinc alloy flowsheet3.jpg


  • Typical parameters of the process
Process Temperature [°C] Heat transfer medium Residence time Chemicals Concentration Details Literature
Plating with alcine cyanide zinc solutions Zinc oxide, sodium hydroxide, sodium cyanide Zinc oxide: 10-30 g/l; sodium hydroxide: 80-120 g/l; sodium cyanide: 5-100 g/l BAT for the surface treatment of metals and plastics, August 2006
Plating with alkaline cyanide-free zinc solutions Zinc oxide, sodium hydroxide, potassium hydroxide Zinc oxide: 5-15 g zinc/l; sodium hydroxide or potassium hydroxide: 100-150 g/l;
Plating with acid zinc solutions Alloys: zinc/iron(<1%) from alkaline cyanide-free electrolytes; zinc-cobalt(<3% Co) from acid or cyanide-free electrolytes; zinc-nickel(<15% Ni) from acid (ammonium chloride-based) or cyanide-free electrolytes


  • Plating zinc and zinc alloy


Plating zinc alloy1.jpg

Literature: BAT for the Surface Treatment of Metals & Plastics, 2006


Plating zinc alloy2.jpg


Plating zinc alloy3.jpg

Literature: BAT for the Surface Treatment of Metals & Plastics, 2006


  • Energy losses from the surface area of heated process solutions


Energy losses from the surface area of heated process solutions.jpg

LITERATURE: BAT for the Surface Treatment of Metals and Plastics, May 2005


Zinc electroplating:


File:Zinc electroplating.jpg

LITERATURE: BAT for the Surface Treatment of Metals and Plastics, May 2005


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