| 摘要 |
Articles to be galvanized, such as wire or chain link fencing, are passed in sequence through an acid bath, a water rinse, a flux bath, a molten zinc bath, and a water quench bath. The quench bath becomes heavily contaminated with suspended, particulate zinc which renders the water unfit for discharge to a sewer or for passage through a cooling tower for recycling. Zinc contamination in the zinc quench water is reduced by centrifuging the water. The treated water is cooled to recycling to the quench bath. When a molten lead bath followed by a water quench bath is used to anneal articles such as wire strands before they are galvanized, lead contamination in the lead quench water is also reduced by centrifuging the water. The zinc and lead removed from the quench water streams are recovered and recycled.
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