Experimental research on mineral processing for a extremely lean iron ore in Inner Mongolia

This paper has conducted the detailed experimental research on a extremely lean iron ore in Inner Mongolia, magnetic pulley preselection-rough grinding magnetic separation-rough concentarate regriding magnetic separation technology with rough grinding fineness(-200mesh) of 73.84% and regrinding fineness(-325mesh) of 90.57% was used, the index of concentrate yield is 8.49%, concentrate grade is 58.75% and concentrate recovery is 49.14%. The results show that this ore is extremely refractory iron ore under the existing technical conditions, th results can provide reference for future development.