Hydrated lime (either dry or as a slurry) has a number of miscellaneous applications in the manufacture of steel products. It is commonly used in wire drawing, acting as a lubricant as the steel rods or wires are drawn through dies, and in pig and slag casting in which a lime whitewash coating on the molds prevents sticking. Lime is used to neutralize the acid-based waste pickle liquor in which iron salts are also precipitated. After pickling, steel products are often given a lime bath to neutralize the last traces of the pickling acid adhering to the metal. Hydrated lime is used to provide temporary corrosion protection in the form of a whitewash coating on steel products and to neutralize acid in coke by-product plants.