Experimental Research on Mineral Separation of a Magnetic-flotation Tailings Mixture

Experiment on iron recovery from a mixture of magnetic separation tailings mixed with reverse flotation tailings in their actual yields was made for an ore-dressing plant.Reverse flotation was used to mixture by the inter-carrier effect of different minerals,Slon-100 cyclic pulsating high gradient magnetic separator was used to discard tailings,and the separation indexes was improved greatly.By two-stage grinding,two-stage high-intensity magnetic separation,two-stage low-intensity magnetic separation and reverse flotation,an iron concentrate was obtained,with yield of 7.54%,iron grade of 65.35% and recovery of 25.57%.And a middling product was obtained also,with yield of 8.69%,iron grade of 29.30% and recovery of 13.43%.The iron grade of final tailings was 13.68%.Compared with the actual production indexes,the yield of iron concentrate was increased by 2.74%,the iron recovery was increased 6.50%.