| 熔盐电解La_2O_3-NiO制备LaNi_5粉末 |
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| 引用本文： | 高筠,王岭,周正,戴磊,毛磊.熔盐电解La_2O_3-NiO制备LaNi_5粉末[J].过程工程学报,2009,9(Z1). |
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| 作者姓名： | 高筠 王岭 周正 戴磊 毛磊 |
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| 作者单位： | 河北理工大学化工与生物技术学院,河北,唐山,063009 |
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| 摘 要： | 采用FFC剑桥工艺以NiO粉末或NiO-La2O3(Ni:La=5:1)粉末为原料经一步熔盐电解成功制备了金属Ni和LaNi5合金.将模压成型的NiO或NiO-La2O3片烧结后作为阴极,高密度石墨棒作为阳极,在CaCl2-NaCl混合熔盐中进行电解.研究了成型压力、烧结温度、槽电压和电解时间等对制备LaNi5合金的影响.得到熔盐电解制备LaNi5的适宜条件为NiO-La2O3粉末在30MPa下模压成型,850℃烧结5h后,在850℃的CaCl2-NaCl熔盐中,3.1V槽电压下电解36 h.探讨了制备LaNi5的反应机理.估算在适宜的工艺条件下电解NiO-La2O3制备LaNi5的电流效率为7.65%,电能消耗为26678.1 kW·h/t-LaNi5.
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| 关 键 词： | FFC剑桥工艺 熔盐电解 金属氧化物 |
Preparation of LaNi_5 Powder by Electrolytic Deoxidation in Molten Salt from La_2O_3-NiO Mixture |
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| GAO Yun,ZHOU Zheng,WANG Ling,DAI Lei,MAO Lei.Preparation of LaNi_5 Powder by Electrolytic Deoxidation in Molten Salt from La_2O_3-NiO Mixture[J].Chinese Journal of Process Engineering,2009,9(Z1). |
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| Authors: | GAO Yun ZHOU Zheng WANG Ling DAI Lei MAO Lei |
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| Affiliation: | College of Chemical Engineering and Biological Technology;Hebei Polytechnic University;Tangshan;Hebei 063009;China |
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| Abstract: | FFC Cambridge process which has a short route, low energy consumption and without environmental influence is proposed for preparation of LaNi5 powders by direct electrolytic deoxidization of NiO and La2O3 (Ni:La=5:1). NiO and La2O3 powders are compacted into pellets, sintered and used as cathode. High-density graphite is used as anode. The influences of compacting pressure, sintering temperature, cell voltage and electrolytic time on preparation of LaNi5 from NiO-La2O3 are studied. The results show that the... |
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| Keywords: | Ni LaNi5 |
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