zinc is subsequently electrowon
using conventional technology.
The expanded plant will produce 124M lb/yr electrowon
cathode at a cash cost under $0.40/lb.
In late 1997, Codelco brought on stream the first, US$640 million-plus, phase of the Radomiro Tomic project came on stream with an initial design capacity of 150,000 t/y of electrowon
high-purity cathodes (this issue, p.128-132).
Besides, 441K st were electrowon
from primary sources.)
New lead anode alloys, cobalt electrolyte additions and the high grade feed from SX plants are producing modern electrowon
cathodes equal to or better than high grade electro-refined copper.
Copper is electrowon
as dendrites on dimpled cathodes in diaphragm cells, then briquetted or converted to wire.
copper's contribution to production continues to rise, and investment in larger haul trucks should cut costs further.
cathodes are shipped directly to the rod plant.
cathodes will be smelted to dore bars for shipment.
Phase 2, which consists of the new $200M ammonia leach plant to convert a percentage of the concentrates into the purest electrowon
cathodes in the world, was officially inaugurated on Jan.
Gold is electrowon
from the concentrated eluate onto steel wool cathodes which are then calcined prior to smelting and casting into bars of approximately 80% gold for delivery to the refinery.
A reduction of 0.9% in concentrate production was more than compensated for by an increase of 11% in electrowon
cathodes thus consolidating the trend for producers to concentrate on low-cost hydrometallurgical operations.