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This paper presents the results of magnetic separation tests for the recovery of colemanite from the ore and the tailings produced in Kestelek (Turkey) Processing Plant. Crushed ore (30.76\% B2O3) and tailings (31.76\% B2O3) samples were wet screened and classified into different size fractions. Size fractions coarser than 75 $\mu$m were subjected to three-stage magnetic separation using a high intensity permanent magnetic separator. The mineralogical composition of the ore and the tailings appears to enable gangu...

In this study, the mineralogical properties and the amenability of Mastra (G\"um\"uşhane-Turkey) gold ore to gravity recovery using a Knelson Concentrator were examined. The mineralogical analysis of the ore has shown that gold occurs as particles of 1-300 mm in size. In the gravity tests performed on the ground ore (-74 •m) a concentrate containing 771.95 g/t Au was produced at 47.15 \% recovery and 1.58\% yield. Enrichment ratios of Au, Ag, Cu, Pb, Zn, Ni and As were found to be 29.7; 16.7; 2.9; 1.58; 3.15; 1...

In this study, the geological features of the placers in the Aegean region of Turkey and possible processing options for the recovery of precious metals and industrial raw materials were examined. Industrial raw materials present in the placers and their potential for industrial uses were reviewed. A conceptual flow sheet for the production of a bulk concentrates to recover rutile, ilmenite, zircon, hematite, limonite, magnetite, cassiterite and gold contained in the placers concentrate was proposed. Quartz crysta...