Developing an optimum beneficiation route for a low-grade chromite ore
More details
Hide details
Hacettepe University, Depatment of Mining Engineering, Beytepe, Ankara, Turkey
Gördes Meta Nickel Cobalt Facility, Manisa, Turkey
Hacettepe University, Department of Mining Engineering, Beytepe, Ankara, Turkey
Publication date: 2019-05-26
Corresponding author
İlkay Bengü Can   

Hacettepe University, Depatment of Mining Engineering, Beytepe, Ankara, Turkey
Physicochem. Probl. Miner. Process. 2019;55(4):865-878
In this study, an optimum beneficiation route was developed for an existing concentrator that processes low-grade chromite deposits. This objective is challenging as the grade of the ore under consideration is approximately 5%, which is the lowest grade processed in Turkey. Detailed characterization, process mineralogy and liberation studies were performed. The optimum fineness of grind was found to be 100% finer than 0.4 mm after the initial beneficiation tests. Laboratory test work was performed using a combination of a teetered bed separator (TBS), spiral concentrator and shaking table. Two different circuit alternatives including a TBS followed by only shaking tables and a combination of a spiral concentrator, TBS, and shaking tables were compared. It was found that an alternative comprising a spiral concentrator, TBS, and shaking table provided better results, required less equipment, etc. Considering these results, a provisional flowsheet was developed, and a total final concentrate of 6.8% by weight with 49.5% Cr2O3 grade and 71.51% Cr2O3 recovery could be obtained. The detailed laboratory test work was followed by plant-scale trials for the verification of the experimental findings with different circuit configurations. From roughing and scavenging spiral groups, ~85% of chromite could be obtained prior to the shaking table concentration, and this led to a minimum increase of 20% in the total recovery with less footprint of the plant, reduced water usage, and lower operating costs.
Journals System - logo
Scroll to top