Method for preparing solutions of zirconium sulfate(IV) and hafnium(IV) with the solution by precipitation of oxalate

摘要

method for sulphate solutions of zirconium (iv) and hafnium (iv) with their solutions stru0105ceniowu0105 oxalate method is characterized by the fact that zirconium and hafnium with solutions of oxalate precipitated as zr (hf) o2u2022xh2o by excess of concentrated nh3aq, advantageously in a mole ratio nh3: zr (hf) = 80 - 100, hot, preferably at 80 to 90u00b0c, after which oozes and thoroughly washed with water.and then roztwarza st. (95%) of h2so4, advantageously in a mole ratio of h2so4: zr (hf) = 7 - 9.