Development of a process for the production of a high hafnium concentrate

An investigation was made to determine a method for producing a high hafnium concentrate. The final product was to be a by-product from a recently developed adsorption process for the production of pure zirconium.\nFour experimental runs are reported. Each run consisted of the adsorption of hafnium and zirconium tetrachlorides from methanol solution on activated silica gel~ and the subsequent stripping of the gel using a methanol-hydrogen chloride strip solution and~ finally~ a sulfuric acid strip solution.