IMPEX SPLAV process by the recovery of:- Zinc Skimmings (extracts from steel?s hot dip galvanising and obtained by a chemical reaction between zinc, oxygen and the flux. Their zinc content is around 40% to 80%)- New and Old Zinc scrap (the new ones are waste of zinc sheets? industrial process, the old ones are obtained by the replacement of metallic roofing and plumbing)- Zinc Drippings coming from hot dip galvanising of pipes- Zinc coming from the galvanising tanks emptying.