Abstract: The constant-pressured acid leaching lixivium of a laterite nickel in south of Ganzhou contains impurities Fe,Mg,Cu,Pb,Zn ions which are separated with the nickel ions difficulty.Used the amarillite craft to wipe off the ferric ions, the removal rate of ferric ions could reach 99 %,used sodium fluoride craft to wipe off heavy metal ions, the removal rate of cupper ion, lead ion and zinc ion all could reach 90%,used sodium fluoride craft to wipe off the magnesium ions, the removal rate of magnesium ions could reach 90%, the loss rate of nickel ions in every craft was about 15%,12%and 5%.

Key words: Laterite nickel, Constant-pressured acid leaching lixivium, Chemical precipitation