Method for preparing polyferric sulfate from potassium feldspar acid leaching iron removal wastewater

• Main Authors: MENG FANGYOU, YAN FENGFENG, LUO TINGTING, SHI KAIYI, YANG TINGZHI, FANG TINGTING, QI LANGQI, WANG XUE
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2022
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The invention belongs to the technical field of chemical wastewater treatment, and relates to a method for preparing polyferric sulfate from potassium feldspar acid leaching iron removal wastewater. The method comprises the following steps: evaporating and crystallizing potassium feldspar acid leaching iron removal wastewater to obtain a ferrous sulfate-containing solid, adding water into the ferrous sulfate-containing solid for dissolving, mixing with waste sulfuric acid for producing titanium dioxide by a sulfuric acid method, continuously stirring and heating to 30-45 DEG C, introducing ozone into the bottom of liquid, and drying and forming reaction liquid to obtain polyferric sulfate. According to the method for preparing the polyferric sulfate from the potassium feldspar acid leaching iron removal wastewater, equipment is simple, the production period is short, no catalyst is used in the reaction, the obtained polyferric sulfate does not contain impurities and is high in stability, and recycling and res