Preparation of Sodium Tungstate from Waste Catalyst Containing Tungsten and Nickel AITranslate
Abstract AITranslate
Sodium tungstate was prepared by roasting plus sodium-leaching-ion exchange and with waste tungsten-nickel hydrogenation catalyst as the raw material. The results show that the tungstate leaching rate from waste catalyst can reach 99% when the catalyst grinding size is 0. 15 ram, the ratio of Na2CO3 dosage to WO3 dosage 0.69, leaching temperature 90℃, and leaching time 1 h. The saturation ion-exchange capacity of WO3 is 332.9 gw%/L-dry resin with the method of serial column absorption. The WO3 desorption rate is 98.2% with 2 mol/L NaCl and 1 mol/L NaOH mixture solution as the desorption agent. The purity of sodium tungstate is 99% after recrystallization.
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DOI：
Chinese Library Classification Number:TF841.1[冶金工程—有色金属冶金]
Citation Information:
Sodium tungstate was prepared by roasting plus sodium-leaching-ion exchange and with waste tungsten-nickel hydrogenation catalyst as the raw material. The results show that the tungstate leaching rate from waste catalyst can reach 99% when the catalyst grinding size is 0. 15 ram, the ratio of Na2CO3 dosage to WO3 dosage 0.69, leaching temperature 90℃, and leaching time 1 h. The saturation ion-exchange capacity of WO3 is 332.9 gw%/L-dry resin with the method of serial column absorption. The WO3 desorption rate is 98.2% with 2 mol/L NaCl and 1 mol/L NaOH mixture solution as the desorption agent. The purity of sodium tungstate is 99% after recrystallization.
quote
| GB/T 7714-2015 | [1] XIONG Xue-liang, CHEN Ze-zong, XIE Mei-qiu, et al. Preparation of Sodium Tungstate from Waste Catalyst Containing Tungsten and Nickel[J]. Rare Metals and Cemented Carbides, 2011(3): 6-9. |
| MLA | [1] XIONG Xue-liang, et al., "Preparation of Sodium Tungstate from Waste Catalyst Containing Tungsten and Nickel." Rare Metals and Cemented Carbides, no. 3, 2011, pp. 6-9. |
| APA | [1] XIONG Xue-liang, CHEN Ze-zong, XIE Mei-qiu, & CHEN Jian. (2011). Preparation of Sodium Tungstate from Waste Catalyst Containing Tungsten and Nickel. Rare Metals and Cemented Carbides(3), 6-9. |
| IEEE | [1] XIONG Xue-liang, CHEN Ze-zong, XIE Mei-qiu, and CHEN Jian, "Preparation of Sodium Tungstate from Waste Catalyst Containing Tungsten and Nickel," Rare Metals and Cemented Carbides, no. 3, pp. 6-9, 2011. keywords: {waste catalyst;tungsten-nickel;sodium tungstate;roasting plus sodium;leaching;ion exchange} |