Study on extraction and enrichment of titanium by phase separation with sodium chloride-potassium thiocyanate-1-propanol system
卢先春1，司学芝2，马冬冬1，许春萱*1
1. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China;
2. College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China
Abstract：The enrichment and extraction behaviors of titanium in 1-propanol-potassium thiocyanate-aqueous system and the separation conditions from other metal ions were investigated. The results showed that the 1-propanol aqueous solution could be well divided into two phases in the presence of sodium chloride. The complex of ［Ti(SCN)62-］［C3H7OH2+］2 formed from protonized 1-propanol ( ［C3H7OH2+］2) and ［Ti(SCN)62-］ (which was generated by titanium and potassium thiocyanate) could be completely extracted by 1-propanol during the phase separation process. When the concentration of 1-propanol, potassium thiocyanate and sodium chloride was 30%（V/V), 8.0×10-2 mol/L and 0.17 g/mL, respectively, the extraction yield of titanium was higher than 98.9% while V Ce, Mg, Mn, Cd, Cr, Al, Fe, Zn, Ni, Ag and W were not extracted to realize the separation of titanium from the above-mentioned metal ions. This method has been successfully applied to the determination and extraction separation of titanium in the sample of synthetic water with satisfactory results.
卢先春，司学芝，马冬冬，许春萱*. 氯化钠-硫氰酸钾-正丙醇体系析相萃取分离和富集钛[J]. 冶金分析, 2012, 32(6): 77-.
卢先春，司学芝，马冬冬，许春萱* . Study on extraction and enrichment of titanium by phase separation with sodium chloride-potassium thiocyanate-1-propanol system. , 2012, 32(6): 77-.
［2］ Chung N H, Masaaki T. Selective extraction of gold in the presence of Pd and Pt by salting-out of the mixture of 2-propanol and water［Ｊ］．Talanta, 2002, 58(4): 927-933.
