Two Methods on Rubidium Extraction from Boron Clays
Bengü Ertan1,2*, Yunus Erdoğan1
1. Department of Chemistry, Dumlupınar University, Kütahya, Turkey.
2. Espiye Vocational School, Giresun University, Turkey.
Abstract: Two methods were emerged as a result of the extraction studies of the boron clay wastes (CW) in Emet/Kütahya region in Turkey and they were presented as a flow sheet. The first one was direct acid leaching process with H2SO4 and the other was roasting operation then acid leaching with HF. 43.8% of rubidium extraction was achieved the direct H2SO4 leaching and the rubidium extraction can reach 87.43% under the same mass ratio of CW/CaSO4/CaCO3 at 950°C for an hour then acid leaching with 1 M HF for two hours at room temperature. The two methods were compared and discussed in all their aspects. Although the results are quite different from each other, it has been shown that the sulfuric acid leaching method can also be used as an alternative.
Keywords: Boron clay wastes, Extraction, Roasting, Leaching, Rubidium.
Pages: 281 – 291 | Full PDF Paper