| 真空碳热还原脱除红土镍矿中镁的研究 |
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| 引用本文： | 徐宝强,裴红彬,杨斌,刘大春,曲涛,戴永年.真空碳热还原脱除红土镍矿中镁的研究[J].真空科学与技术学报,2011,31(3):341-347. |
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| 作者姓名： | 徐宝强 裴红彬 杨斌 刘大春 曲涛 戴永年 |
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| 作者单位： | 1. 真空冶金国家工程实验室,昆明,650093;云南省有色金属真空冶金重点实验室,昆明,650093;昆明理工大学冶金与能源工程学院,昆明,650093
2. 昆明理工大学冶金与能源工程学院,昆明,650093 |
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| 基金项目： | NSCF-云南省联合基金资助项目，高等学校博士学科点专项基金资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 元江高镁低品位红土Ni矿开发利用的关键在于提取Ni的同时,重视金属Mg等金属的综合回收利用。本文针对真空碳热还原红土Ni矿脱除金属Mg的过程进行了研究,探索处理元江红土镍矿的新工艺。借助XRD分析手段分别考察了40 Pa压强下,不同温度、不同配碳量和催化剂对剩余渣物相和Mg脱除率的影响,并利用SEM、EDS等手段研究了冷凝产物的形貌、结构和成分。热力学分析和实验表明,真空碳热还原红土Ni矿脱除金属Mg在工艺上是可行的,在反应温度为1500℃、保温90 min、配碳质量比为100∶42的条件下,Mg的脱除率可以达到93.85%,得到主要成分为FeSi和SiC的剩余渣;Ni品位由1.18%提高到3.24%;金属Mg晶体呈层状冷凝的六方致密结构,其平均纯度达到94%以上。
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| 关 键 词： | 真空冶金 Mg脱除 碳热还原 红土Ni矿 金属Mg |
The Carbothermic Reduction Process for Magnesium Removal from Nickel Laterite in Vacuum |
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| Xu Baoqiang,PEI Hongbin,Yang Bin,Liu Dachun,Qu Tao,Dai Yongnian.The Carbothermic Reduction Process for Magnesium Removal from Nickel Laterite in Vacuum[J].JOurnal of Vacuum Science and Technology,2011,31(3):341-347. |
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| Authors: | Xu Baoqiang PEI Hongbin Yang Bin Liu Dachun Qu Tao Dai Yongnian |
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| Affiliation: | Xu Baoqiang1,2,3,Pei Hongbin1,Yang Bin1,Liu Dachun1,Qu Tao1,Dai Yongnian1,3 (1.National Engineering Laboratory of Vacuum Metallurgy,Kunming 650093,China,2.Key Laboratory of Vacuum Metallurgy of Non-Ferrous Metals of Yunnan Province,3.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,China) |
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| Abstract: | A novel technique was developed to extract Mg impurity from the Ni-laterite by carbothermic reduction in vacuum.The impacts of experimental conditions,including the temperature,ratio of laterite/carbon,and addition of CaF2 at 40 Pa,on Mg removal rate were studied.The phases of the slag,morphology and contents of the condensates in carbothermic reduction were characterized with X-ray diffraction(XRD),scanning electron microscopy(SEM),and energy dispersive spectroscopy(EDS).The Mg extraction was calculated wi... |
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| Keywords: | Vacuum metallurgy Magnesium removal Carbothermic reduction Nickel laterite Magnesium |
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