In the aqueous solutions,Zn(Ⅱ) precipitates with ammonium thiocyanate and Tetradecylbenzyldimethylammonium Chloride.In the presence of sodium Chloride the precipitate is floated.It shows that Zn(Ⅱ) can be completely separated from Fe(Ⅱ)?Co(Ⅱ)?Ni(Ⅱ)?Mn(Ⅱ),by floatation.The method has the advantage of inorganic solvent floatation method,and it is non toxic,simple,rapid and economical.
In aqueous solutions,Cu(Ⅱ) precipitates with ammonium thiocyanate and tetradecylpyridinium chloride.In the presence of sodium chloride,the precipitate is floated.It shows that Cu(Ⅱ) can be completely separated from Fe(Ⅲ),Co(Ⅱ),Ni(Ⅱ),Mn(Ⅱ) and Cd(Ⅱ) by floatation.Besides has the advantages of inorganic solvent floatation,the method is non toxic,simple,rapid and economical.
The behavior of Ammonium sulfate Potassium iodide Ethanol System For Extraction and Separation of Bismuth and the condition of separating of ethanol from water have been study.It shows that as the extracting regent,ethanol,can extract BiI 3- 6.If pH=3～6,Bi(Ⅲ) can be separated from Fe(Ⅲ)、Co(Ⅱ)、Mn(Ⅱ)、Cu(Ⅱ)、 Ni(Ⅱ) 、Mo(Ⅵ).
