EfficientELO – Energy and resource efficient electro-galvanizing of steel strip

Situation:

• Large amounts of zinc top dross occur as low-grade residues in the hot-dip galvanizing lines
• High ohmic power losses in electro-galvanizing lines are caused by a relative poor electrolyte conductivity

Solution:

• Extensive investigations on the usage of top dross as alternative raw material for electro-galvanizing lines
• Optimization of electrolyte conductivity
• Development of treatment methods for electrolytes from hot-dip galvanizing top dross

Operational benefit:

• Decrease of energy and raw material consumption in electro-galvanizing lines
• Knowledge base on the influence of different electrolyte compositions on the coating and processing properties

• Electro-galvanizing
• electrolyte conductivity
• hot-dip galvanizing
• recycling
• zinc top dross