伊塔克普铁矿块的可还原性研究

C. Ocheri
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引用次数: 0

摘要

对伊塔克普铁矿块的还原性进行了研究。对矿石的化学成分、结构分析和形态结构进行了研究。采用热重仪(TG)、差热分析仪(DTA)、x射线荧光仪(XRF)和x射线衍射仪(XRD)对样品进行了分析。利用光学显微镜和扫描电子显微镜(SEM)和能量色散光谱(EDS)进行了进一步的分析。还原性研究在尼日利亚Nsukka的尼日利亚大学冶金与材料工程系的实验室进行。型号LABE 1210的马弗炉,Divine international。实验采用1500ºC的发热能力作为加热装置。将样品加热至800 ~ 1000ºC,温度间隔为40ºC,每次实验的持续时间为20 ~ 120分钟,间隔时间为20分钟。铁矿块装在6个内径为0.675cm × 0.594cm的不锈钢容器内,容器口严严密封,并盖上气密盖,以供气体泄漏,使用日本Ajaokuta制铁公司的炼焦煤作为还原剂。Itakpe铁矿块体在1000°C、120分钟的温度下,还原值最高为74.3%。在进行还原性试验后,用扫描电镜(SEM)和能谱(EDS)测定了铁(Fe)的含量。从研究工作中提出了一些建议和贡献,以帮助未来的研究人员在这一领域的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Study on the Reducibility of Itakpe Iron Ore Lumps
The study on the reducibility on the Itakpe iron ore lumps were carried out. The chemical compositions, structural analysis and morphological structures of the ores were examined. Some analytical instruments and equipment were used to determine the Thermogravimetry (TG), the Differential Thermal Analyzer (DTA), the X-Ray Fluorescence (XRF) and X-Ray Diff action (XRD). Optical Microscopy and Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS) were also used for further analyses .The reducibility study was performed in the laboratories of the Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria. A muffle furnace with model number LABE 1210, Divine international. The heating capacity of 1500 ͦC as the heating device was used for the experiments. The samples were heated to temperature range from 800 ͦC to 1000 ͦC with temperature interval of 40 ͦC .The duration allowed for each of the experiments ranged from 20 minutes to 120minutes and also allowed interval time of 20 minutes. The iron ore lumps were taken inside six stainless steel containers with diameter 0.675cm x 0.594cm inside diameter with the mouths tightly closed with air tight covers for gas escape, the metallurgical coking coal obtained from the Ajaokuta Steel Company Limited was used as a reducing agents . The highest reduction value of Itakpe iron ore lump was obtained at 74.3% with corresponding temperature at 1000 ͦC at time rate of 120minutess. The (SEM) and (EDS) were used to determine the iron (Fe) content after the reducibility tests were performed. Some recommendations and contributions from the research work was stated to assist the would - be researchers in this field of study.
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