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, and the calculated activation energy of 9.977 kJ/mol is characteristic for a diffusion-controlled process. Key words: bastnaesite; rare earth; roasting ore; leaching; kinetics 1 Introduction Numerous studies... to now, there are no reports on the leaching kinetics of roasting ore from Dechang bastnaesite [13-19]. Sulfuric acid solution was chosen as the lixiviant in the present work and the leaching kinetics......
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Senarmontite volatilization kinetics in nitrogen atmosphere at roasting/melting temperatures A. ARACENA1, O. JEREZ2, C. ANTONUCCI1 1. Escuela de Ingeniería Química, Pontificia Universidad Católica de... August 2015 Abstract: The volatilization kinetics of senarmontite (Sb2O3) was analyzed in a neutral atmosphere in two temperature ranges: 550-615 °C (roasting temperature) and 660-1100 °C (melting......
某低品位石煤钒矿资源综合利用工艺宁华1,黄光1,袁爱武1,王兴1,周晓源1(1.湖南省长沙市长沙有色冶金设计研究院)摘 要:介绍一种低品位石煤钒矿资源综合利用的工艺流程.表明低品位石煤钒矿的开发应该同时利用碳,钒,硫,硅多种元素,生产规模必须大型化,工艺路线应该稳妥化,设备选型要求优选化关键词:冶金技术； 石煤焙烧； 湿法提钒； 循环流化床锅炉......
Trans. Nonferrous Met. Soc. China 27(2017) 197-203 Vanadium recovery from stone coal through roasting and flotation Chun LIU1, Yi-min ZHANG1,2,3, Shen-xu BAO1,3 1. College of Resources... from stone coal by roasting-flotation was investigated based on the mineralogy. The process comprised four key steps: decarburization, preferential grinding, desliming and flotation......
Trans. Nonferrous Met. Soc. China 29(2019) 186-193 Reaction behavior of kaolinite with ferric oxide during reduction roasting Xiao-bin LI, Hong-yang WANG, Qiu-sheng ZHOU, Tian-gui QI, Gui-hua LIU... oxide during reduction roasting was investigated. The results of thermodynamic analyses and reduction roasting experiments show that ferrous oxide obtained from ferric oxide reduction preferentially......
高钛渣氧化焙烧热力学分析路辉1,谢刚2,俞小花3,田林1,侯彦青3,谢红艳3(1.昆明理工大学 冶金与能源工程学院,云南昆明 6500932.云南冶金集团技术中心,云南昆明 6500313.昆明理工大学 冶金与能源工程学院,昆明 650093)摘 要:通过高钛渣高温氧化焙烧试验,研究焙烧前后物相结构转变与化学组成变化,并对高温氧化焙烧过程中高钛渣各组分的化学行为进行热力学讨论.结果表明:在1 000℃条件下氧化焙烧,黑钛石相与锐钛矿大部分发生晶型结构变化,转变为金红石型TiO2.探索高钛渣氧化焙烧的热力学规律,......
Phase change,micro-structure and reaction mechanism during high temperature roasting of high grade rare earth concentrateHuihui Wang1,2,Mei Li1,2,Dongliang Zhang2,Kai Gao2,Jianfei Li2,Zongxi Weng2,Wei Xu21. Mining Research Institute,Inner Mongolia University of Science & Technology2. Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources,Ministry of Education摘 要......
Phase change,micro-structure and reaction mechanism during high temperature roasting of high grade rare earth concentrateHuihui Wang1,2,Mei Li1,2,Dongliang Zhang2,Kai Gao2,Jianfei Li2,Zongxi Weng2,Wei Xu21. Mining Research Institute,Inner Mongolia University of Science & Technology2. Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources,Ministry of Education摘 要......
原矿沸腾焙烧工艺控制分析靳永强1,武艳红1(1.贵州省黔西南布依族苗族自治州贵州金兴黄金矿业有限责任公司)摘 要:沸腾焙烧是针对含硫,含砷矿石以及难处理的包裹金矿石的选冶预处理工艺,是解决该类矿石难以氰化提金的有效技术措施.主要介绍了沸腾焙烧工艺的控制原则和重点控制参数,着重分析了在生产过程中会引起控制参数异常的原因及其各种原因所对应的现象和解决方法,并说明了在长期生产过程中由于时间积累或处理不当导致的炉况异常现象及其解决方法.关键词:沸腾焙烧； 压力控制； 异常参数； 异常炉况......
