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有色金属(冶炼部分):2019,(11):12-17
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铜渣与镁渣复合改质后磁选提铁的工艺研究
(1.北方民族大学材料科学与工程学院;2.北方民族大学“粉体材料与特种陶瓷”重点实验室)
Process Study on Iron Extraction with Magnetic Separation from Combined Modification of Copper Slag and Magnesium Slag
JIANG Liang1,2,3,2, YE Yu-xin, LI Peng-xiang, ZHANG Xiang, CHEN Yu-hong, HAN Feng-lan
(1.School of Material Science and Engineering,North Minzu University;2.China;3.Key Laboratory of Powder Materials and Special Ceramics,North Minzu University)
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投稿时间:2019-06-24    修订日期:2019-06-26
中文摘要: 将工业铜渣和工业镁渣按一定比例混合后进行复合改质,对改质后混合渣进行磁选,并通过XRD、SEM分析和热力学计算对改质前后混合渣中的物相变化特征进行研究。结果表明,复合改质能够使铜渣中弱磁性富铁相铁橄榄石向强磁性镁铁尖晶石转变,并可通过磁选进行分离。碱度的降低有利于混合渣中镁铁尖晶石形成,但不利于硅酸盐相生成。本文试验范围内碱度的最佳值为2.05,在该碱度下混合渣的磁选产率和回收率分别为65.32%和79.34%,且磁选后尾渣中硅酸盐相含量相对较多。
中文关键词: 铜渣  镁渣  磁选  改质
Abstract:Industrial copper slag was modified by mixing industrial magnesium slag with a certain proportion. The modified slag was magnetic separated. Analysis on mineral phase changes in mixed slag before and after modification was carried out by XRD, SEM analysis and thermodynamic calculation. The results show that composite modification of copper slag and magnesium slag can effectively transform iron-rich phase of iron olivine into ferromagnetic magnesia spinel in copper slag, and the latter can be effectively separated by magnetic separation. Decrease of alkalinity is favorable for formation of magnesium iron spinel in mixed slag but is not favorable for silicate. The optimum setting of basicity in the experimental range is 2.05. Magnetic separation yield and recovery of mixed slag are 65.32% and 79.34%, respectively, and content of silicate phase in tailings after magnetic separation is relatively high.
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基金项目:宁夏自然科学基金资助项目(2019AAC03100);宁夏科技支撑计划项目(2017EZ08);宁夏高等学校科研项目(NGY2018-142);粉体材料与特种陶瓷重点实验室开放基金(1804)
引用文本:
蒋亮,叶雨欣,李鹏翔,张翔,陈宇红,韩凤兰.铜渣与镁渣复合改质后磁选提铁的工艺研究[J].有色金属(冶炼部分),2019(11):12-17.
JIANG Liang,YE Yu-xin,LI Peng-xiang,ZHANG Xiang,CHEN Yu-hong,HAN Feng-lan.Process Study on Iron Extraction with Magnetic Separation from Combined Modification of Copper Slag and Magnesium Slag[J].Nonferrous Metals (Extractive Metallurgy),2019(11):12-17.

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