Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (1): 33-37.DOI: 10.12068/j.issn.1005-3026.2015.01.008

• Materials & Metallurgy • Previous Articles     Next Articles

Experimental Study on Liquid Precipitation of Iron Vanadate

GAO Qiang, SHI Pei-yang, LIU Cheng-jun, JIANG Mao-fa   

  1. Key Laboratory for Ecological Metallurgy of Multimetallic Ores, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2013-11-25 Revised:2013-11-25 Online:2015-01-15 Published:2014-11-07
  • Contact: GAO Qiang
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Abstract: Crystalline FeVO4 was prepared by liquid precipitation. The effects of pH value and reaction temperature on precipitates were investigated by X-ray diffraction(XRD)and scanning electron microscopy(SEM). The results indicated that crystalline FeVO4 with regularly spherical in the shape and fine grain size is obtained under the conditions of reaction temperature at 25℃, pH value of 1.5~2, n(V)/n(Fe)=1, and the standing time of 60 min. With the increase of pH value, Fe2O3 phase appears, and FeVO4 phase disappears. The temperature affects greatly on the preparation of iron vanadate, and once the temperature increases, the pH value needs to be adjusted.

Key words: iron vanadate, crystallization, liquid precipitation, pH value, temperature

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