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Full-Text Articles in Physical Sciences and Mathematics
A Brief Overview On Geothermal Scaling, Tuğba Isik, Alper Baba, Dornadula Chandrasekharam, Mustafa Muammer Demi̇r
A Brief Overview On Geothermal Scaling, Tuğba Isik, Alper Baba, Dornadula Chandrasekharam, Mustafa Muammer Demi̇r
Bulletin of the Mineral Research and Exploration
Hot spring waters are rich in terms of minerals. Since there are dramatic changes in thermodynamic parameters in geothermal power plants, such as a decrease in temperature and pressure, severe precipitation occurs throughout the system components in an uncontrolled manner. There are three main chemistries in deposits: carbonates (mainly calcium carbonates), silicates (metal silicates), and sulphides (antimony sulphide-stibnite). Energy harvesting is remarkably reduced out of the insulating nature of the deposit. Various actions need to be taken to mitigate this undesirable issue of scaling in geothermal systems. Geothermal systems are in fact quite complex, and the composition of brine and, …
Production Of Rare-Earth Oxides From Eskişehir-Beylikova Complex Ores, Haydar Güneş, Hüseyin Eren Obuz, Hasan Akçay, Çiğdem Kara, Ayşe Erdem
Production Of Rare-Earth Oxides From Eskişehir-Beylikova Complex Ores, Haydar Güneş, Hüseyin Eren Obuz, Hasan Akçay, Çiğdem Kara, Ayşe Erdem
Bulletin of the Mineral Research and Exploration
In this study, the production technology of barite, fluorite, rare-earth elements, and thorium-bearing rare-earth oxides from the Eskişehir-Beylikova were investigated, and the processes that can be used in the production of thorium-free mixed rare earth oxides were tested. The applied processes are roasting, leaching, solvent extraction and precipitation methods, respectively. After all studies, the optimum roasting temperature and roasting duration are determined as 600 °C and 1 hour. In the extraction stage, the highest leaching efficiency is achieved with 5 M HCl, 1-hour leaching duration, 1/3 solid/liquid ratio and 35 °C leaching temperature. While methyl tri C8-C10 ammonium chloride (Adogen …