oxidized copper, ochre, ash, malachite and chrysocolla, a blue-green copper ore. Such measures were intended not only to be aesthetically pleasing, but also to protect the wearer from the heat of the ...

As ore compositions change due to depletion ... is Metso’s proprietary OKTOP ® Autoclave unit, where copper concentrate is ...

“Metso’s Cu POX leaching utilises high-temperature oxidation to ... up to 99%, copper recovery rates, ensuring maximum ...