Process to concentrate manganese ores via reverse cationic flotation of silicates

摘要

The present invention relates to a process for concentrating manganese from the tailing of a manganese-carrying mineral characterized by comprising the stages of removing coarse particle size fraction from the tailing, desliming and conducting an acid or a basic reverse cationic flotation. The manganese-carrying minerals of the present invention are usually minerals with low manganese content being preferred derived from the lithologies "Tabular Pelite" (or PETB), Pelite Siltite (or PEST), Detritic (or DETR), Rich Pelite (or PERC) and Metallurgical Bioxide (or BXME). The present invention also relates to a reverse cationic flotation used to concentrate manganese which is carried out using depressors agents and collectors agents as flotation reagents.