Investigation of Pre-Concentration and Concentration Possibilities for Beylikova Barite-Fluorite-REO Complex Ore

Date

2025-9-1

Author

Sarılar Altınsel, Sena

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The main objective of the thesis study is to investigate pre-concentration and concentration possibilities of Barite-Fluorite and REO Complex Beylikova Ore. The run of mine ore with chemical composition of 29.46% Ba, 19.77% Ca, 1.18% Ce, 1.01% La and 472.22 ppm Th was used in the experimental part of the thesis. According to characterization tests it is revealed that rare earth entities accumulated in fine size fractions. Attrition scrubbing cooperated with size classification were performed with the aim of achieving effective liberation between mineral particles and clay entities. Under optimum conditions rare earth pre-concentrate obtained with 3.80% Ce, 4.04% La and 1321 ppm Th grades at 55.20%, 68.53% and 48.01% recovery rates respectively by losing 14.80% of barite and 8.07% of fluorite minerals. Following to pre-concentration of rare earth minerals, to achieve selective concentration of barite and fluorite sequential flotation tests were performed. Under identified optimum conditions flotation of barite and fluorite was performed resulting with barite concentrate with 98.95% barite grade with 66.49% recovery and fluorite concentrate with 95.17% fluorite grade with 66.63% recovery were obtained. In order to achieve further concentration of rare earth entities, leaching test program was applied which was constructed based on statistical model. Optimum operational conditions provided by the model is identified as leaching under 90 ˚C for 2 hours by using 5M nitric acid. This test results with 93.79% Ce, 90.57% La, 84.66% Th extraction and 55.38% Fe dissolution ratios.

Subject Keywords

Rare Earth Minerals, Barite, Fluorite, Pre-concentration, Concentration

URI

https://hdl.handle.net/11511/116161

Collections

Graduate School of Natural and Applied Sciences, Thesis