|
Process description:
This process has three stages: Copper pre-precipitation, cobalt precipitation and polishing.
There are two pH analyzers in the copper pre-precipitation stage. In this process the pH is controlled automatically before the zinc dust is added using a controller and a valve which adds spent acid. The pH is also controlled after the addition of zinc just by means of a second controller for the spent acid valve number two. The pH in the polishing stage is measured.
|
