王爽,倪文,李克庆,王长龙,王健月

• 1:北京科技大学土木与环境工程学院工业典型污染物资源化处理北京市重点实验室
• 2:清华大学材料学院
• 3:河北工程大学土木工程学院

摘要(Abstract)：

采用深度还原法处理镍渣,以电石渣或氧化钙作单一添加剂,通过X射线衍射(XRD)、扫描电子显微镜(SEM)和能谱(EDS)等方法,对比分析了两种添加剂分别作用时所得还原产物中的物相和微观结构特征。结果表明,以电石渣代替氧化钙作单一添加剂进行镍渣深度还原提铁是可行的;两者所得金属精选粉的铁指标变化趋势基本一致,所得还原产物的物相组成基本相同,但微观结构存在差异;电石渣作添加剂时,还原产物内部的金属相成片连接,内部气孔形态不规则,气孔表面形成更密集的金属相层,生成的金属相向气孔表面迁移富集趋势较使用氧化钙时更显著;电石渣作添加剂在二元碱度1.0时,所得金属精选粉的铁品位、铁回收率和铁金属化率分别为91.07%、91.20%和92.35%。

关键词(KeyWords)： 镍渣;电石渣;深度还原;添加剂;金属

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(“863”计划)(2012AA062406);; 中国博士后科学基金(2015T80095,2015M580106);; 河北省自然科学基金钢铁联合基金(E2015402057);; 固废资源化利用与节能建材国家重点实验室开放基金(SWR-2014-007)

作者(Author): 王爽,倪文,李克庆,王长龙,王健月

DOI: 10.13289/j.issn.1009-6264.2015.12.002

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