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of high-purity calcium oxide from salt lake by-product calcium sulfate by conversion method FENG Ya-li1, MA Yu-wen1, LI Hao-ran2 (1. School of Civil and Environmental Engineering, University of Science... is controlled by the interface chemical reaction process. Key words: salt lake calcium sulfate; calcium carbonate; high-purity calcium oxide; conversion method; shrinking core model 氧化钙是一种重要的无机材料,用于制造电石,液碱,漂白粉,广......
and Springer-Verlag Berlin Heidelberg 2011 Abstract: Anodic oxide films of titanium alloy Ti-10V-2Fe-3Al were sealed in calcium acetate solution. The morphology and composition of the sealed films were... more uniform. Elemental calcium is presented through the whole depth of the anodic oxide films. The roughness of the anodic oxide films is reduced after the sealing process. Electrochemical impedance......
of shortcomings, such as large consumption of calcium oxide, large material flow, considerable amount of slag, and small burning temperature range. Based on our previous study, the alumina leaching.... Kinetics of calcium sulfoaluminate formation from tricalcium aluminate, calcium sulfate and calcium oxide [J]. Cement and Concrete Research, 2014, 55: 79-87. [18] MA Su-hua, SHEN Xiao-dong, HUANG Ye......
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Article ID: 1003-6326(2005)05-0957-08 Coating of calcium phosphate on biometallic materials by electrophoretic deposition ZHANG Er-lin(张二林), YANG Ke(杨 柯) (Institute of Metal Research... immune system. Calcium phosphate coating, especially hydroxyapatite(HA) coating attracts special attention due to its good biocompatibility. Being one of the effective methods used to deposit HA......
宝钢滚筒渣安定性的试验研究石磊1,陈荣欢1,王如意1(1.上海市宝山钢铁股份有限公司技术中心)摘 要:介绍了宝钢滚筒渣的基本性质和粒度分布,构建了一套安定性测定装置,考察了渣样粒度,浸泡时间,水浴温度,荷载板重等因素对渣安定性的影响,并探讨了水浸时渣内f-CaO含量的变化趋势以及f-CaO含量和体积膨胀率之间的关系,为滚筒渣的工程应用提供初步依据关键词:滚筒渣； 安定性； 游离氧化钙； 体积膨胀率......
Article ID: 1003-6326(2005)05-1145-05 Behavior of calcium silicate hydrate in aluminate solution LI Xiao-bin(李小斌), ZHAO Zhuo(赵 卓), LIU Gui-hua(刘桂华), ZHOU Qiu-sheng(周秋生), PENG Zhi-hong(彭志宏) (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: Using calcium hydroxide and sodium silicate as starting materials, two kinds of calcium......
. The titanium powder (leaching residues) was detected by means of XRD, SEM and EDS. It is proved that calcium oxide and other impurities can be effectively removed by acid leaching. Higher oxygen content...; calcium oxide; titanium 钛具有密度低,比强度高,耐热,耐腐蚀,无毒无磁等优异性能,在航空航天,交通运输,石油化工,能源等领域得到越来越广泛的应用,需求量逐年上升[1].目前,Kroll法[2]是工业生产海绵钛的主要工艺.但是该工艺为半连续生产,生产效率低,氯化过程对设备的要求较高,环境污染严重,导致钛的生产成本较高,限制了金属钛的大规模应用[3-5].科研工作者致力于寻求一种更高效的......
Calcium ferrite formation characteristic during iron ore sintering with different oxygen atmospheresMAO Xiao-ming(毛晓明), YOU Zhi-xiong(游志雄), ZHANG Yuan-bo(张元波), FAN Zhen-yu(范振宇), LI Guang-hui(李光辉), JIANG Tao(姜涛) (School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China)Abstract:It is generally known that the large formation amount of calcium ferrite......
of perovskite calcium titanate (CaTiO3) in calciothermic reduction process of titanium dioxide to prepare the titanium powders was investigated by thermodynamic calculation, XRD, SEM and EDS. Thermodynamic.... Key words: titanium; titanium dioxide; calcium chloride; perovskite calcium titanate; calciothermic reducation 钛具有密度低,强度高,耐热,无磁和可焊等优点,在军事领域以及石油,化工,冶金和医疗等民用领域得到了广泛的应用,钛及钛合金已成为国民经济建设的一种重要的稀有金属结构材料[1].现行的......
