HARARE – China’s Sinomine Resource Group (002738.SZ) on Monday said it has completed the construction of a spodumene concentrate plant at its Zimbabwe lithium mine, as Chinese battery minerals producers ramp up output in the African country. Sinomine bought Bikita Minerals, one of Africa’s oldest lithium mines, for $180 million in January 2022 and began building a spodumene concentrate plant while…