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- W2260471625 abstract "A liquid–liquid extractive separation between hafnium and zirconium from thiocyanic acid medium using the mixtures of diisobutyl ketone (DIBK) and di (2-ethylhexyl) phosphoric acid (P204) as the extractant was developed. The effects of the aqueous acidity, the concentration of P204, the contacting time, the concentration of NH4SCN, and the concentration of (NH4)2SO4 and NaCl on the extractive separation of the two metal ions were investigated. It is observed that hafnium was enriched in the organic layer while zirconium enriched in the aqueous layer in DIBK-P204 system. The optimum conditions for hafnium and zirconium separation were that the aqueous acidity is 1.0 mol/L, the concentration of P204 in the organic phase is 10% (v/v), the contacting time is 15 min, the concentration of NH4SCN is 4.0 mol/L, and the concentration of NaCl is about 2.0–3.0 mol/L. Under this condition, the separation factor of hafnium and zirconium is up to 10.5." @default.
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- W2260471625 date "2016-10-01" @default.
- W2260471625 modified "2023-10-16" @default.
- W2260471625 title "Separation of zirconium and hafnium by solvent extraction using mixture of DIBK and P204" @default.
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- W2260471625 doi "https://doi.org/10.1016/j.hydromet.2016.01.032" @default.
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