Zinc ash is oxidized zinc that forms on the surface of molten zinc metal. The ash consists of a powdery material (the ash proper) and solid metallic pieces of an irregular shape. In the galvanizing industry, the term zinc ash prevails and is widely used. Zinc ash usually arises from hot dip galvanizing or other zinc coating processes. The ash is removed from the top of galvanizing baths by skimming or straining. Zinc ash is a raw material used for the preparation of micro nutrients for the soil. These are soil conditioners.