Deep Removal of Magnesium Ions from Ammonium Tungstate Solution AITranslate
Abstract AITranslate
In the new process of scheelite leaching in H2 SO4-H3 PO4 synergistic system,the phosphorus impurity in the ammonium tungstate solution can be effectively removed by adding magnesium salt into the ammonium tungstate solution obtained by the ammonia dissolution of phosphotungstic acid.However,the residual Mg^2＋in the phosphorus removed solution can easily lead to the excessive magnesium content in the APT product.In order to obtain the product meeting Chinese standard of GB/T 10116—88 APT-0,D850 chelating resin was used to adsorb Mg^2＋from ammonium tungstate solution.At room temperature,different volume of wet resin was loaded into a plexiglass ion exchange column with a diameter of 15 mm.The ammonium tungstate solution containing 200 mg/L Mg^2＋and 220 g/L WO2-4 was passed through the resin bed with the flow rate 1.1 mL/min.The results show that when the volume ratio of ammonium tungstate solution to wet resin is less than 22~25,the concentration of Mg^2＋in the exchanged solution is almost zero,the solution can be deeply purified,and APT product from evaporative crystallization fully meets the requirements of the national standard.Washed by deionized water at room temperature,the Mg^2＋-loaded resins were desorbed with 0.5 mol/L sulphuric acid at a flow rate of 6 mL/min.The desorption rate of Mg^2＋is more than 96.4%,and the resins can be well regenerated.
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Basic Information:
DOI：
Chinese Library Classification Number:TF841.1[冶金工程—有色金属冶金]
Citation Information:
In the new process of scheelite leaching in H2 SO4-H3 PO4 synergistic system,the phosphorus impurity in the ammonium tungstate solution can be effectively removed by adding magnesium salt into the ammonium tungstate solution obtained by the ammonia dissolution of phosphotungstic acid.However,the residual Mg^2＋in the phosphorus removed solution can easily lead to the excessive magnesium content in the APT product.In order to obtain the product meeting Chinese standard of GB/T 10116—88 APT-0,D850 chelating resin was used to adsorb Mg^2＋from ammonium tungstate solution.At room temperature,different volume of wet resin was loaded into a plexiglass ion exchange column with a diameter of 15 mm.The ammonium tungstate solution containing 200 mg/L Mg^2＋and 220 g/L WO2-4 was passed through the resin bed with the flow rate 1.1 mL/min.The results show that when the volume ratio of ammonium tungstate solution to wet resin is less than 22~25,the concentration of Mg^2＋in the exchanged solution is almost zero,the solution can be deeply purified,and APT product from evaporative crystallization fully meets the requirements of the national standard.Washed by deionized water at room temperature,the Mg^2＋-loaded resins were desorbed with 0.5 mol/L sulphuric acid at a flow rate of 6 mL/min.The desorption rate of Mg^2＋is more than 96.4%,and the resins can be well regenerated.
quote
| GB/T 7714-2015 | [1] FU Nan, LIU Xu-heng, ZHAO Zhong-wei. Deep Removal of Magnesium Ions from Ammonium Tungstate Solution[J]. Rare Metals and Cemented Carbides, 2018(4): 1-5. |
| MLA | [1] FU Nan, et al., "Deep Removal of Magnesium Ions from Ammonium Tungstate Solution." Rare Metals and Cemented Carbides, no. 4, 2018, pp. 1-5. |
| APA | [1] FU Nan, LIU Xu-heng, & ZHAO Zhong-wei. (2018). Deep Removal of Magnesium Ions from Ammonium Tungstate Solution. Rare Metals and Cemented Carbides(4), 1-5. |
| IEEE | [1] FU Nan, LIU Xu-heng, and ZHAO Zhong-wei, "Deep Removal of Magnesium Ions from Ammonium Tungstate Solution," Rare Metals and Cemented Carbides, no. 4, pp. 1-5, 2018. keywords: {ammonium tungstate solution;D850 resin;magnesium ion;impurity removal;ion exchange} |