DEVICE FOR REMOVING BOTTOM DROSS IN HOT DIPPING ZINC BATH

摘要

PURPOSE: To simply separate a bottom dross from a hot dipping zinc bath at a low cost by arranging a settling box for separating the bottom dross in a hot dip galvanizing vessel, sucking the bottom dross in the galvanizing vessel bottom part and settling. ;CONSTITUTION: At the time of continuously applying the hot dip galvanizing to a long steel sheet 4 in the galvanizing vessel 1 containing the hot dipping zinc bath 13, the bottom dross 2 is deposited at the bottom part of the galvanizing vessel 1. This deposited bottom dross 2 is sucked from a sucking hole 5 in a guide tube 6 provided with a pump 6A and guided into the settling box 7 arranged in the galvanizing vessel 1 to settle the bottom dross 2 at the bottom part. Supernatant in the hot dipping zinc bath settling and separating the bottom dross 2 is returned back into the galvanizing vessel 1 from an opening 8 arranged at the upper part of the settling box 7 and again used as the hot dipping zinc bath 13. The bottom dross is separated from the hot dipping zinc bath in the simple device without high expense and the device is prevented from deterioration of the quality in the galvanized layer by sticking a part of the bottom dross 2 to the galvanized steel sheet 4.;COPYRIGHT: (C)1994,JPO&Japio