In this study, possible separation of chromite from serpentine in fine sizes using a magnetic carrier was investigated as a function of pH, dodecylamine (DDA) dosage, and amount of magnetite. First, the zeta potentials of minerals were determined in the absence and presence of DDA, and then magnetic carrier experiments were performed in conditions based upon the zeta potential results. Experiments revealed that chromite could be separated from serpentine with a 96.8% recovery under the experimental conditions of 4 x 10 −4 M DDA, 25 mg magnetite, and at pH 12. In the case of artificial mixtures of chromite and serpentine minerals, chromite concentrate containing 49.7% Cr 2 O 3 was obtained with 82.8% recovery from a feed containing 27.00% Cr 2 O 3. As a result of FTIR studies, physical adsorption of DDA on minerals was confirmed. It was also found that DDA adsorption on chromite was higher than those of serpentine and magnetite. FTIR studies performed with chromite+magnetite and serpentine+magnetite mixtures revealed that DDA adsorption on serpentine declined significantly while DDA adsorption on chromite slightly increased.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.