Pre-flux Iron Removal - Electrolytic Process

The effects of carry-over of ferrous iron into the kettle on the wire is well known but few galvanizers have been successful in applying control to the degree necessary to achieve the potential advantages of reduced dross and coating thickness control.

WICA Machinery has researched the problems and has developed a technically supported programme which offers the galvanizer a meaningful opportunity to change the situation and in so doing to:

1. Radically reduce dross
2. Increase the fluidity of the molten alloy
3. Allow the economic use of nickel as a means of further increasing alloy fluidity

The continuous electrolytic process used employs a divided cell to oxidize the ferrous iron in pre-flux to ferric iron with a zero charge. The zero charges ferric iron settles quickly as a dense solid allowing return of an optically clear solution to the pre-flux tank

The equally important pre-flux management software sees ferrous iron maintained at or below 0.2 g/l, the pre-flux solution maintained as a balanced salt and the nature of the pre-flux maintained such that it does not corrode the work to form more ferrous iron