A PROCESS FOR UPGRADING VALUES OF ULTRAFINE CHROMITE PARTICLES FROM REJECTED CHROMITE TAILINGS IN A KNOWN BENEFICIATION CIRCUIT

摘要

The invention relates to the beneficiation process of chromite areas, a huge amount of chromite tailings is generated, which contains substantial amount of ultrafine chromite particles. The chromite tailings are generally rejected for further processing and stored in the tailing ponds. For further utilization of these rejected tailings the present invention adapts a selective flocculation technique, carboxy methyl cellulose and sodium hexametaphosphate of medium viscosity are used to act as flocculant and dispersant respectively. The selective flocculation process is applied on chromite tailing containing less than 37 m of ultrafine chromite particles. The process exhibits an increase of the chromite values from 16.36 (%) to 31.34 (%) with 32(%) yield (%).