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Development of novel rare earth doped fluoride and oxide scintillators for two-dimensional imagingA.Yoshikawa1,2,T.Yanagida2,Y.Yokota1,K.Kamada1,N.Kawaguchi1,3,K.Fukuda1,3... the ways to its improvement became an important R&D topic.For this purpose the Ce and Eu doped LiCAF ap-peared competitive candidates.Especially,when substitution of 3He neutron detectors......
Reaction mechanism of fluoride conversion into BF4- during sulphuric acid leaching of roasted bastnaesiteHongcheng Zhang1,Dairui Xie1,Heng Zhang1,Meng Jiang1,Hao Huang1,Yu Wan1,Yang Liao1,2,Shilin Zhao1,21. College of Chemistry and Material Science,Sichuan Normal University2. Key Laboratory of Land Resources Evaluation and Monitoring in Southwest,Ministry of Education of China摘 要:
titania; fluoride ion (F-); adsorption; [全文内容正在添加中] ......
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萤石中二氧化硅和氟化钙的系统分析宋新艳1(1.山东省济南市济钢集团有限公司技术监督处 )摘 要:萤石试样以过氧化钠为熔剂,于铁坩埚内进行快速熔融,熔块以含硼酸的热水溶液浸取,盐酸溶解试样,制成母液.以硅钼蓝分光光度法测定二氧化硅含量,以EDTA滴定法测定总钙量,单独测定CaCO3的量用以校正总钙量从而得到CaF2含量.以硼酸消除氟的干扰,以三乙醇胺掩蔽Fe3+,Al3+,并以同品种的标准样品绘作校准曲线和采用标准样品换算的方法对数据进行处理.本方法用于萤石标准样品中SiO2,CaF2的测定,相对标准偏差分别......
Fluoride evaporation and crystallization behavior of CaF2–CaO–Al2O3–(TiO2) slag for electroslag remelting of Ti-containing steelsCheng-bin Shi1,Jung-wook Cho2,Ding-li Zheng1,Jing Li11. State Key...="ChDivSummary">To elucidate the behavior of slag films in an electroslag remelting process, the fluoride evaporation and crystallization of CaF2–CaO–Al2O3–(TiO2) slags were studied using the single hot......
)05-1035-07 Transformation mechanism and leaching performance of rare earth fluoride molten salt slag in the process of Na2CO3-roasting YANG Youming1,2, LI Liu2, XIAO Min2, NIU Fei1 (1. Institute..., China) Abstract: The transformation mechanism of rare earth fluoride molten salt slag(REFMSS) mixed with Na2CO3 in the roasting process and the effects of roasting conditions on rare earth (RE......
Na3AlF6-Al2O3熔盐中铝溶解度的测定张跃宏1,翟秀静2,李斌川1,周杨2,杨超2,冯乃祥2(1.辽宁省沈阳市东北大学材料与冶金学院2.东北大学 材料冶金学院,沈阳110004)摘 要:研究了铝在Na3AlF6-Al2O3熔盐中溶解度的测定方法.采用氟化钠与试样在高温下熔融,熔融物溶解水后加入硼酸-氢氧化钠溶液,过滤沉淀将氧化铝除去,取其中一部分溶液在pH5.5~6.0的条件下,加入过量的EDTA标准溶液,加热煮沸使之与铝完全络合,以二甲酚橙作指示剂,用锌标准溶液滴定过量的EDTA,从而得到Na3AlF......
Preparation of Yttrium-Barium-Copper Trinary Master Alloys by Electrolysis from Molten Fluoride-oxide童叶翔,刘冠昆,杨绮琴,洪惠婵摘 要:PreparationofYttrium-Barium-CopperTrinary MasterAlloysbyElectrolysisfrom MoltenFluoride-oxideTongYexiang(童叶翔);LiuGuankun(刘冠昆)...关键词:......
电絮凝法处理高氟地热水 刘峰彪1,陈谦1,邵立南2 (1.北京矿冶研究总院,北京,100044;2.中国矿业大学,化学与环境工程学院,北京,100083) 摘要:针对常用的除氟工艺存在的缺点,以高氟地热水处理为研究对象,研究利用电絮凝法除氟过程.结果表明,电絮凝法处理高氟地热水的最佳工艺参数为面体比80m~2/m~3,极板间距0.5cm和电流密度10A/m~2,电耗为2.13kWh/t,酸性或中性水和较高的水温有助于提高处理效果.电絮凝法除氟机理为可溶性的铝电解产生Al~(3+)离子在适宜的pH值时形成Al(OH)~3,最后转换成Al_n(OH)_(3n),通过絮凝作用将氟化物去除. 关键词:环境工程; 地热水除氟; 电絮凝; 机理; environment engineering; fluoride removal from geothermal water; electric......