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Pure metal extraction from molten oxide slag by short-circuit galvanic cell 被引量:4
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作者 YunmingGao XingminGuo KuochihChou 《Journal of University of Science and Technology Beijing》 CSCD 2004年第4期306-309,共4页
The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed... The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed in the experiment was as follows: graphite rod|[O]Fe+C saturation|ZrO2(MgO)|(FeO)(slag)|Fe rod. The reduction current in the galvanic cell consisted of an external short-circuit current and an interior short-circuit current in the oxygen-ion-permeable membrane. The real-time variation of external circuit reduction ratio of the molten slag could be obtained from the curve of the external circuit current to the time. 展开更多
关键词 oxygen-ion-permeable membrane solid electrolyte galvanic cell molten slag electrochemical reduction
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非接触式熔融还原法制备金属镍 被引量:3
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作者 孙长余 郭兴敏 李菲 《中国有色金属学报》 EI CAS CSCD 北大核心 2010年第10期2045-2050,共6页
采用非接触式熔融还原法,以氧化镁部分稳定的氧化锆管作为氧离子渗透膜,将阴极与阳极分隔开,分批向阴极一侧(熔渣)加入氧化亚镍,在阳极(碳饱和铁水)补充碳还原剂,进行连续制备无碳金属镍的实验研究。结果表明:金属镍沉积在液态阴极上面... 采用非接触式熔融还原法,以氧化镁部分稳定的氧化锆管作为氧离子渗透膜,将阴极与阳极分隔开,分批向阴极一侧(熔渣)加入氧化亚镍,在阳极(碳饱和铁水)补充碳还原剂,进行连续制备无碳金属镍的实验研究。结果表明:金属镍沉积在液态阴极上面,以金属单质形式存在,可以通过机械或熔分方法来分离;升高反应温度和增大金属氧化物加入量有利于还原反应的进行,按加入1gNiO外电路电流降至100mA通过电量计算,反应温度从1743K升高到1773K,加入1g和2gNiO还原时间分别缩短54min和18min,而两个温度下NiO加入量增加后,还原时间缩短近一半。 展开更多
关键词 氧化亚镍 非接触式熔融还原 氧离子渗透膜
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Pure metal extraction from molten oxide slag by short-circuit galvanic cell 被引量:2
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作者 GAO Yunming, GUO Xingmin, and CHOU Kuochih 《Rare Metals》 SCIE EI CAS CSCD 2004年第3期202-202,共1页
The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed... The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed in the experiment was as follows: graphite rod|[O]_(Fe+C saturation)[ZrO_2(MgO)|(FeO)_(slag))|Fe rod. The reduction current in the galvanic cell consisted of an external short-circuit current and an interior short-circuit current in the oxygen-ion-permeable membrane. The real-time variation of external circuit reduction ratio of the molten slag could be obtained from the curve of the external circuit current to the time. 展开更多
关键词 oxygen-ion-permeable membrane solid electrolyte galvanic cell molten slag electrochemical reduction
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