The Kidd Creek copper smelter has been expanded from its original desi
gn of 59 000 tonnes of copper per year to over 120 000 tonnes per year
Modifications to the process gas handling system and acid plant have
been made to accommodate this higher production rate and, generally, t
o optimize the operation. The gas handling system associated with the
continuous smelting process is discussed in terms of boiler accretions
and modifications to minimize their impact on operations, design chan
ges to effect reductions in high pressure drop duct configurations, ma
terial changes to overcome corrosion and plant additions to improve ga
s cleaning capability. The acid plant is reviewed with references to c
hanges made to accommodate the increased SO2 gas strength resulting fr
om the higher smelting rates.