VERFAHREN ZUR ANREICHERUNG VON BAUXITEN, ANDEREN SILIKATISCHEN ERZEN, INSBESONDERE QUARZ ODER TONEN, CARBONATISCHEN ERZEN, INSBESONDERE KALKSTEIN ODER DOLOMIT, ODER SULFIDISCHEN ERZEN VON MINDERER QUALITAET MIT UNGUENSTIGEM GEFUEGE

摘要

An improved process for the enrichment of bauxites with unfavorable textures and low qualities via flotation and carried out after selective agglomeration. According to the process of the invention a water-soluble prepolymer of low chain length is added to the slurry as flocculating agent, thereafter the polymerization is started again by heating the slurry and/or adjusting its pH and/or adding a catalyst thus converting the polymer chain fragments adhered onto the gangue with high surface activity into a cross-linked resin, and finally the slurry is subjected to flotation in the presence of a conventional flotation aid.