Mineralogy and carbothermal reduction behaviour of vanadium-bearing titaniferous magnetite ore in Ea

来源 :International Journal of Minerals Metallurgy and Materials | 被引量 : 0次 | 上传用户:kabasiji2
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Vanadium-bearing titaniferous magnetite bands hosted by Precambrian gabbro-norite-anorthositic rocks or their metamorphic equivalents were discovered in some parts of Eastern Indian Shield,containing 48%-49%Fe(total),10%-25%TiO2,and 0.3%-2.20%V2O5by mass.Mineralogical and petrological study,composition,and characterization of the vanadium-bearing titaniferous magnetite ore were carried out by scanning electron microscopy-energy dispersive X-ray(SEM-EDX),wave length X-ray florescence(WDXRF),inductively coupled plasma-atomic emission spectroscopy(ICP-AES),X-ray difraction(XRD),etc.Chemical beneficiation for valuable metals,such as Fe,Ti,and V,was performed by reduction roasting.The direct and indirect reduction were investigated by mixing the lump ore with solid activated charcoal in a closed reactor and purging the reducing gas mixture in standard reducibility index apparatus at diferent temperatures and time intervals.The reduction roasting parameters were optimized.Finally,the reduced samples were crushed and upgraded by magnetic separation.The results show that,the maximum mass fractions of magnetic and nonmagnetic parts achieved are 69.36%and 30.64%,respectively,which contain 10.6%TiO2and 0.84%V2O5in the magnetic part and 36.5%TiO2and 0.22%V2O5in the nonmagnetic part. Vanadium-bearing titaniferous magnetite bands hosted by Precambrian gabbro-norite-anorthositic rocks or their metamorphic equivalents were discovered in some parts of Eastern Indian Shield, containing 48% -49% Fe, 10% -25% TiO2, and 0.3% -2.20% V2O5by mass. Mineralogical and petrological study, composition, and characterization of the vanadium-bearing titaniferous magnetite ore were carried out by scanning electron microscopy-energy dispersive X-ray (SEM- EDX), wave length X-ray florescence (WDXRF ), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray difraction (XRD), etc.Chemical beneficiation for valuable metals, such as Fe, Ti, and V, was performed by reduction roasting.The direct and indirect reduction were investigated by mixing the lump ore with solid activated charcoal in a closed reactor and purging the reducing gas mixture in standard reducibility index apparatus at diferent temperatures and time intervals. reduction roasting parameters were optimized. samples were crushed and upgraded by magnetic separation. The results show that, the maximum mass fractions of magnetic and nonmagnetic parts achieved are 69.36% and 30.64%, respectively, which contain 10.6% TiO2 and 0.84% ​​V2O5 in the magnetic part and 36.5% TiO2 and 0.22% V2O5in the nonmagnetic part.
其他文献
文章介绍了通过对VGA接口的同步信号进行处理,实现对VGA信号的检测,能够应用于各种基于VGA接口的场合,具有很大的应用价值.
随着我国经济的不断发展,矿山建设也得到了快速的发展.在矿山建设的工作中矿山测量作业是一个十分重要的环节,矿山测量工作的好坏会对矿山建设的质量造成直接的影响.因此,关
2011年12月15日,欧盟发布“照亮未来——加快新型照明技术利用”绿皮书,分析了固态照明(SSL)的特点,总结了欧洲固态照明推广现状和产业发展情况,提出了欧盟固态照明推广和固
目的 分析某三级甲等医院恶性肿瘤死亡病例的疾病顺位、性别、年龄等构成特点,为相关部门加强恶性肿瘤防治工作提供参考.方法 对某院201 1年-2017年住院患者因恶性肿瘤死亡的
期刊
武器系统主要是控制武器中火力与运动的系统,主要作用于摧毁目标,具有一定综合性与智能性,武器系统在使用方面具有较多优势,但同时也存在一定弊端,武器系统中的稳定性会受到
国内护理质控标准,包括卫生部2000年制定的医院感染管理规范,均强调物品灭菌前清洁的重要性,但对医疗器械清洗后及灭菌后的残留血是否须作检测,未作明确规定.而残留在器械上
“自由精神”树屋这种可以随风飘荡的树屋非常适合喜欢冥想、摄影和观测野生动物的人们,它体现出设计者丰富的想象力。该树屋的主要建筑材料就地取材于当地森林,一部分树屋可
目的 分析2007年-2017年某院妇科恶性肿瘤的构成分布及变化趋势,分析各类恶性肿瘤的病理类型分布,为该地区妇科恶性肿瘤性疾病的防治提供有效建议.方法 分别对某院2007年-201