Habinshuti, Jean Baptiste; Munganyinka, Jeanne Pauline; Himanshu, Tanvar; Adetunji, Adelina.R.; Mishra, Brajendra; Mukiza, Janvier; Ofori-Sarpong, Grace; Onwualu, Azikiwe P.
(Minerals Engineering, 2023-05-29)
We report a fluoride-free comparative study with promising results of an alkali-assisted roasting with KOH and water-based leaching of the Nigerian and Rwandan columbite-tantalite concentrates and application of guanidine ...