Success recycling with acid recovery

摘要

With acid recovery systems in place, two Leggett & Platt facilities keep acid costs below 30 cents per tonrnof steel pickled. By running a continuous recovery system, the bath solutions contain lower iron levels andrntherefore less residue on the surface of the wire to allow a more uniform coating for good drawing. Thisrnpresentation details systems that not only recover all the acid that would be lost to hauling orrnneutralization, but also produce a moist, usable iron sulfate. The system offers savings in raw acid andrnrevenue from re-selling Ferrous Sulfate Heptahydrate.