'A PROCESS FOR RECOVERY OF ENRICHED CHROMIUM CONCENTRATE FROM CHROMITE TAILINGS, WHICH ELIMINATES THE ABOVE DRAWBACKS'

摘要

Huge amount of chromite processing plant tailings are getting deposited in the tailing pond. These tailings contain substantial amount of chromite value in them which are ultra-fine particles. Ultra-fine chromite tailings cannot be effectively up-graded by conventional beneficiation method, because of the smaller particle size. The present invention provides a process for up-gradation of chromite values in the tailings. In the inventive process selective flocculation is applied for pre concentration of chromite values and the further enrichment of the chromite value is achieved by applying a step of magnetic separation. In the selective flocculation process degraded wheat starch can be used as flocculent and sodium hexa-meta phosphate as the dispersing agent. The process enriches the chromite value to around twice the value of chromite present in the tailings.