Methods of chemical analysis, XRD, and pH monitoring are adopted in order to study wet extraction of Fe, V and Ti based on activated reduction, and the control conditions as well as the degree of recovery are determined. The primary-leaching in NaHCO3 saturated solution followed by final-leaching via carbonization is possible, and the leaching ratio for Na approaches 94 as the pH value of the alkali is controlled at 8 in the carbonization process. Metallic iron powder with an iron content of 94 is prepared by means of magnetic separation, and there are few slag fragments bearing V and Ti dispersed within iron particles. Precipitation of NaHCO3 and Si, Al impurities is completed during thorough carbonization at a pH value of 6, and the concentration of Si and Al in the resultant solution after carbonization meets the specifications for V extraction by an ammonia method. Residue from carbonization leaching displays good solubility in dilute acid, the leaching rate of Ti in dilute 15 vol. hydrochloric acid exceeds 95, and a purity of 98.4 for titanium white pigment is acquired from the acid-leaching lixivium by reheating hydrolysis. Finally, the overall degree of Fe, V and Ti recovery during wet extraction reaches 94, 90 and 90 respectively.
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