It has been quite a while since I researched this. Both processes get over 80% of the copper, and it may even be into the 90's. The big difference is that the cementation produces a concentrate (I call it CemCon) that is about 60% copper and needs to go to a smelter, while the SX/EW actually produces 99.99% pure cathode copper plates which can be sold right into the market.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.