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钛精矿球磨活化微波还原试验李雨1,雷鹰1,彭金辉1,张利波1,张泽彪1,郭胜惠1(1.云南省昆明市昆明理工大学材料与冶金工程学院非常规冶金教育部重点实验室)摘 要:研究攀枝花低品位钛精矿的球磨活化-微波还原.采用激光粒度及X衍射研究不同球磨条件下钛铁矿的粒度和物相变化并进行分析,结果表明磨矿活化使矿物颗粒逐渐减小,特征峰宽化,晶粒变细;研究了活化物料的升温和还原行为,并对还原产物微观形貌和物相进行分析,表明活化物料有良好的微波吸收性能和还原效应.证实在反应过程中存在"热点".球磨8h的混合物料在温度900℃,反......
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:钛铁矿;镁;富氢气体;直接还原;耦合反应 中图分类号:TF823 文献标志码:A Hydrogen-rich gas reduction of ilmenite and coupling reaction...) Abstract: Thermogravimetric analyzer, mass spectrometer, carbon analyzer, SEM and XRD were utilized to study the reduction product of ilmenite (FeTiO3). The mass loss, distribution of titanium......
are 96.85 % and 93.50 %, respectively,and the content of titanium is 12.6 % in the residue. The main mineral phases for the residues under the optimal operation conditions are quartz, ilmenite, anatase......
大功率密闭直流电弧炉钛渣冶炼产品质量控制体系研究韩丰霞,桑秀丽,徐建新昆明理工大学质量发展研究院摘 要:以大功率密闭直流电弧炉(简称HPDC炉)冶炼钛渣为基础,根据不同地区钛矿成分的差别,以及产品供销需求,建立钛渣冶炼产品质量控制体系,对生产制度进行及时调整,以适应下游钛工业生产过程中不同工艺条件下生产需求的不同.在2023K的高温下,考虑主要的还原反应,HPDC炉冶炼钛渣可人为调节的控制因素是配碳比(AIP,Percentage of anthracite to ilmenite mass)和HPDC炉输入功率.HPDC炉试生产期间,产品钛渣中TiO2和FeO的含量均随着AIP的增加而下降,当AIP为12.243%时,钛渣中TiO2含量达到最高.生产中要根据不同的目标产品成分,制定合理的生产制度,加......
微波碳热还原攀枝花低品位钛精矿雷鹰1,李雨1,彭金辉1,张利波1,张世敏1,郭胜惠1(1.云南省昆明市昆明理工大学材料与冶金工程学院非常规冶金教育部重点实验室)摘 要:对攀枝花低品位钛精矿进行了微波还原试验研究.研究了预氧化,配碳量,添加剂等条件对还原钛铁矿中铁金属化率的影响.试验结果表明:在预氧化温度800℃,硼砂配比3%,焦粉配比10%,微波还原温度1000~1100℃条件下,还原60min,还原产物铁的金属化率超过90%.分析微波强化钛铁矿还原的机理在于:微波热应力在球团内部产生大量孔隙和裂纹促进了还原气......
Forecasting of mechanical properties of covered electrode containing La/CeO2 based on fuzzy neutral networkYi-Jun Xu,Yong-Huan Guo,Hui FanSchool of Mechanical and Electrical Engineering, Jiangsu Normal University摘 要:In order to improve the mechanical properties of deposited metal of ilmenite type welding electrode,CeO2/La rare earth elements were added......
, ilmenite among them contains Sc 101 g·t-1, Ti picrite which is a main mineral with Sc in the silt contains the highest Sc content of 121 g·t-1, and meantime it is the most valuable object to recover......
with a TiO2 recovery of 91.19%. Titanium existed mainly in the form of anosovite and ilmenite in the titanium concentrate.关键词:......