In this paper, the extraction of vanadium from Chinese black shale by roasting with mixture salt addition was studied. The effect of salt additions, temperature and time on the recovery of vanadium were investigated by mixture salt roasting and 2% H2SO4 leaching. The mixture additions of Na2CO3-BaSO4 was used in the roasting process. The optimal roasting conditions for black shale were determined to be 2.5 hours roasting at 760 °C with the mixture additive SB of 10-15%. After being leached with 2% sulphuric acid, the leaching efficiency of van...
