PREPARATION METHOD OF POTASSIUM SULFATE AND FERROUS CHLORIDE FROM FERROUS SULFATE

摘要

PURPOSE: A preparation method of potassium sulfate(KSO4) and ferrous chloride(FeCl2) from ferrous sulfate(FeSO47H2O) produced in titanium factory is provided. Also, HCl and reduced Fe are obtained by reacting the above FeCl2 with H2 gas. The resultant KSO4 and reduced Fe are applicable to fertilizers and powder metallurgy or reductants, respectively. CONSTITUTION: KSO4 and FeCl2 are obtained by mixing FeSO47H2O with KCl in an equivalent ratio of 1.05:1 or 1.1:1 and then grinding it to a size of more than 100mesh, followed by adding methanol or ethanol and stirring at 40-50deg.C for 2-3hrs. Reduced Fe and HCl are also obtained by reacting formed FeCl2 with H2 at about 600deg.C like these: FeCl2 + H2 -->Fe + 2HCl.