Recuperación de Minerales de Manganeso Contenidos en Jales, Mediante Concentración Gravimétrica

Gravimetric concentration, or mineral separation based on density differences, is an environmentally friendly method performed on vibrating concentrating tables without the use of chemical reagents. Mineral species contained in tailings deposits constitute an important source of manganese. In this work, the Deister concentrating table was used to concentrate manganese-bearing species. XRD results show that the tailings contain valueless gangue phases such as quartz, illite, and goethite, while the manganese-bearing species are identified as a manganese oxide corresponding to todorokitite and a manganese hydroxide assigned to rancieite. The density separation carried out on the Deister table can be carried out efficiently with a longitudinal table inclination of 1° and a transverse inclination of 3°, a pulp feed flow of 1.75 L/min, the feed mineral contains 15.38% w/w of Mn and a % solids of 31.6%, under these conditions a concentrate grade of 40.89% w/w is obtained with a concentration ratio R/C of 2.66 in a maximum time of 26.30 minutes.