Optimization of Ammonium Tungstate Evaporation and Crystallization Process by Response Surface Method AITranslate
Abstract AITranslate
The process of preparing APT by evaporation and crystallization method is simple, but the particle size of the prepared APT is relatively large, which seriously reduces the quality of subsequent products.The influences of stirring speed, ammonium tungstate concentration, and reaction temperature on the D;and Span of APT were studied by response surface method, and then the evaporation and crystallization process of APT was optimized.The results show that among the three factors, the order of influence on D;is reaction temperature>ammonium tungstate concentration>stirring speed, and the order of influence on Span is ammonium tungstate concentration>stirring speed>reaction temperature.The optimal process conditions are stirring speed of 271 r/min, ammonium tungstate concentration of 178.9 g/L,and reaction temperature of 81.6 ℃.Under the optimal process conditions, the D;and Span of the APT prepared in the experiment are 20.31 μm and 1.323,respectively, which are greatly reduced compared with other samples.The reason for the reduction is that low stirring speed and low reaction temperature inhibit crystal growth, and high ammonium tungstate concentration promotes crystal nucleation.
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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:
The process of preparing APT by evaporation and crystallization method is simple, but the particle size of the prepared APT is relatively large, which seriously reduces the quality of subsequent products.The influences of stirring speed, ammonium tungstate concentration, and reaction temperature on the D;and Span of APT were studied by response surface method, and then the evaporation and crystallization process of APT was optimized.The results show that among the three factors, the order of influence on D;is reaction temperature>ammonium tungstate concentration>stirring speed, and the order of influence on Span is ammonium tungstate concentration>stirring speed>reaction temperature.The optimal process conditions are stirring speed of 271 r/min, ammonium tungstate concentration of 178.9 g/L,and reaction temperature of 81.6 ℃.Under the optimal process conditions, the D;and Span of the APT prepared in the experiment are 20.31 μm and 1.323,respectively, which are greatly reduced compared with other samples.The reason for the reduction is that low stirring speed and low reaction temperature inhibit crystal growth, and high ammonium tungstate concentration promotes crystal nucleation.
quote
| GB/T 7714-2015 | [1] XU Li-hua, CHENG Hua-jin, LIU Qing-sheng. Optimization of Ammonium Tungstate Evaporation and Crystallization Process by Response Surface Method[J]. Rare Metals and Cemented Carbides, 2022(2): 8-14. |
| MLA | [1] XU Li-hua, et al., "Optimization of Ammonium Tungstate Evaporation and Crystallization Process by Response Surface Method." Rare Metals and Cemented Carbides, no. 2, 2022, pp. 8-14. |
| APA | [1] XU Li-hua, CHENG Hua-jin, & LIU Qing-sheng. (2022). Optimization of Ammonium Tungstate Evaporation and Crystallization Process by Response Surface Method. Rare Metals and Cemented Carbides(2), 8-14. |
| IEEE | [1] XU Li-hua, CHENG Hua-jin, and LIU Qing-sheng, "Optimization of Ammonium Tungstate Evaporation and Crystallization Process by Response Surface Method," Rare Metals and Cemented Carbides, no. 2, pp. 8-14, 2022. keywords: {APT;ammonium tungstate;response surface method;evaporation and crystallization;D50;Span} |