Solubility Data for the NaOH−NaNO3−Na3VO4−Na2CrO4−H2O System at (40 and 80) °C

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• 作者：Shaona Wang ; Ziwei Song ; Yan Zhang ; Hao Du ; Shili Zheng ; Yi Zhang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2010
• 出版时间：November 11, 2010
• 年：2010
• 卷：55
• 期：11
• 页码：4607-4610
• 全文大小：136K
• 年卷期：v.55,no.11(November 11, 2010)
• ISSN：1520-5134

文摘

In a new vanadium production process, the effective separation of Na₃VO₄ and Na₂CrO₄ from the NaOH−NaNO₃−Na₃VO₄−Na₂CrO₄−H₂O system plays a very important role. In this regard, the dissolution behavior of Na₃VO₄ and Na₂CrO₄ in the NaOH−NaNO₃−Na₃VO₄−Na₂CrO₄−H₂O system was investigated by measuring solubility data, and finally the solubility diagram was constructed. From the data, a method of separating Na₃VO₄ via cooling crystallization and Na₂CrO₄ via evaporization in the concentrated alkaline solution is proposed.