| A Yunnan limonite ore is a refractory one due to its lower grade and its complex mineral dissemination particle size and its serious slime.Conventional HIMS(high gradient magnetic separation),gravity separation and flotation process have little separation effect on this ore.Basing on its process mineralogy research,a process consisting of HIMS-reverse flotation-magnetization reductive roasting-LIMS is adopted for treating this ore.As a result,in the iron concentrate,P-content is reduced to 0.39 %,S-content ... |