高稀土氧化物渣系熔化温度的测定

doi:10.12034/j.issn.1009-606X.217131

过程工程学报 ›› 2017, Vol. 17 ›› Issue (6): 1203-1207.DOI: 10.12034/j.issn.1009-606X.217131

高稀土氧化物渣系熔化温度的测定

邓永春姜银举* 王永强

内蒙古科技大学材料与冶金学院，内蒙古包头 014010

收稿日期:2017-02-13 修回日期:2017-04-11 出版日期:2017-12-20 发布日期:2017-12-05
通讯作者: 姜银举 jiangyinju3@126.com
基金资助:
稀土废料中有价元素火法-湿法联合回收过程的基础研究

Melting Temperature Test of Slag Rich in Rare Earth Oxides

Yongchun DENG, Yinju JIANG^*, Yongqiang WANG

School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China

Received:2017-02-13 Revised:2017-04-11 Online:2017-12-20 Published:2017-12-05
Contact: JIANG Yinju jiangyinju3@126.com

摘要/Abstract

摘要： 稀土钕铁硼、稀土储氢合金、镍氢电池电极等稀土废料经选择性氧化还原?渣金熔分处理后，其中的稀土以氧化物形态富集在熔分渣中，采用半球法对熔渣体系的熔化温度进行研究，以得到稀土氧化物含量高、熔化温度适宜的熔渣体系. 结果表明，REO?SiO2?Al2O3?FeO?B2O3渣系的熔化温度随REO含量降低、FeO含量增加而降低；REO?SiO2?Al2O3?MnO渣系的熔化温度随REO含量降低而降低，60%(Pr,Nd)Ox?19.3%SiO2?9.7%Al2O3?7%FeO?4%B2O3和55%(La,Ce)Ox?25.3%SiO2?12.7%Al2O3? 7%MnO渣系稀土氧化物含量高(适中)、熔化温度适宜，是最优的熔渣配比，可分别作为从钕铁硼废料和稀土储氢合金、镍氢电池电极废料中提取稀土的基础渣系.

关键词: 稀土, REO-SiO2-Al2O3-FeO-B2O3渣系, REO-SiO2-Al2O3-MnO渣系, 熔化温度

Abstract: Processed by selective oxidation?reduction and melting separation, the rare earth oxides in the rare earth wastes such as rare earth NdFeB, hydrogen storage alloys, Ni?MH battery electrodes, etc. were enriched into molten slag. In order to get the needed slag which was rich in rare earth oxides and with suitable melting temperature, the hemispherical method was adopted to study the melting temperature. The results showed that the melting temperature of the REO?SiO2?Al2O3?FeO?B2O3 slag decreased as the content of REO decreased and the content of FeO increased, and the melting temperature of the REO?SiO2?Al2O3?MnO slag decreased with REO content reduced. Because of their high content of rare earth oxides and proper melting temperature, the 60%(Pr,Nd)Ox?19.3%SiO2?9.7%Al2O3?7%FeO?4%B2O3 slag and the 55%(La, Ce)Ox?25.3%SiO2?12.7%Al2O3?7%MnO slags were the best choices for the based slag for NdFeB and hydrogen storage alloys and Ni–MH battery electrodes to extract rare earth.

Key words: rare earth, REO-SiO2-Al2O3-FeO-B2O3 slag, REO-SiO2-Al2O3-MnO slag, Melting Temperature

邓永春姜银举王永强. 高稀土氧化物渣系熔化温度的测定[J]. 过程工程学报, 2017, 17(6): 1203-1207.

Yongchun DENG Yinju JIANG Yongqiang WANG. Melting Temperature Test of Slag Rich in Rare Earth Oxides[J]. Chin. J. Process Eng., 2017, 17(6): 1203-1207.

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高稀土氧化物渣系熔化温度的测定

Melting Temperature Test of Slag Rich in Rare Earth Oxides

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