| 摘要 |
PURPOSE: Provided is a preparation method of ferric sulfate(Fe2(SO4)3) by reacting the sources of iron, Fe3O4, generated from wire industry with concentrated H2SO4 without use of catalyst and discharge of pollutant byproducts(NO2, NO, etc.) unlike conventional method using ferrous sulfate(FeSO4) and HNO3. CONSTITUTION: A ferric sulfate(Fe2(SO4)3) solution is prepared by reacting Fe3O4 generated from wire industry with concentrated H2SO4(98%) at 150-250deg.C under flowing O2, wherein the formed Fe2O3 containing unreacted iron oxide is dissolved in H2SO4 solution at 70-80deg.C, followed by filtering. The above process is expressed by the formula of 2FeO + 3H2SO4 + O2 --> Fe2(SO4)3 +3H2O, Fe2O3 + 3H2SO4 --> Fe2(SO4)3 +3H2O. |
