I am also interested in this info. I think we have a smelter somewhere in the country....but I think we mostly export the ore to China etc and then we actually buy it back from them as finished steel aluminium. I could be very wrong though.
There is a massive Aluminum smelter in Richards Bay. Hillside and Bayside smelters owned by South32. There was a Tata steel smelter too but closed down in 2016 due to steep electricity prices I believe.