Jabali zinc mine project
The deposit is expected to be mined by open pit at a rate of 800kt/a with a stripping ratio of 2:1. Ore is to be crushed and calcined prior to milling and leaching using ammonia based solutions. Zinc bearing solutions are to be purified before zinc carbonate is chemically precipitated by steam injections. Pure zinc carbonate is to be calcined for the production of 70kt/a of high quality zinc oxide (> 79% Zn).