高炉喷煤用立式烟气炉的研制与实践

介绍了立式烟气炉的设计制作与生产应用。     

熔炼炉壁中砌体的界面力学有限元矩阵对号入座法与热应力

矩阵对号入座法是曾庆元院士对有限元的重大贡献,这种界面力学热应力有限元矩阵对号入座法被应用到高炉砌体中去,对高炉内衬的热应力进行分析,获得成功。     

高炉喷煤技术的新进展

巴西Escola de Minas-UFOP公司开发了一种类似于高炉风口的实验装置,采用三种煤粉混合喷吹并在喷吹前对煤粉进行预热的方式,在实验装置上进行了反复试验.根据试验结果,得出了如下结论:目前在业界尚未广泛采用的在喷吹前对煤粉进行预热,以及三种煤混合喷吹的工艺对提高煤粉燃烧率,从而优化喷煤技术是可行的.     

钼市场30年回顾与展望

概述了钼的历史及应用，说明了钼的资源分布、供应及成本，指出了影响钼产品价格走势的因素，回顾了世界钼产品30年的价格走势，评论了2005年钼市场的走势并对2006年钼市场进行了展望及预测。     

Dynamic model building and simulation for mechanical main body of lunar lander

Focused on the dynamics problems of a lunar lander during landing process, the whole process was analysed in detail, and the linear elastic model of the moon soil was established by means of experiments-analogic method. Combining the way of elastic impact with the way of velocity replacement, the dynamics model of damping free vibration dynamics model with 3-degree of freedom(DOF) for lunar lander is obtained according to the vibration mechanics elementary theory. Based on Lagrange equations and the energy principle, the damping free vibration differential equations for the lunar lander with 3-DOF are derived and the equations are solved in simulation ways by means of ADAMS software. The conclusions obtained can be used for the design and manufacture of lunar lander.     

坚持科学发展观,努力创建和谐公司

第一点我想要说的是，发展是硬道理。综合性工程咨询公司是在我国政治经济体制改革的大潮中应运而生的，是在计划经济向市场经济过渡时期，为适应政府投资决策科学化民主化而成立的，经过二十年的风风雨雨，她已经成长为活跃于从中央到地方的一支很有影响的中介力量，为推动我国投资决策的科学化民主化作出了人所共知的贡献。但随着我国投资体制改革的进一步深入，各类中介机构的迅速崛起和市场竞争的日趋激烈，综合性工程咨询机构向何处去，引起同行们的关注。本人的认识是：发展是硬道理。不管遇到什么艰难险阻，只要聚精会神地谋发羼，综合性工程咨询机构就能经受住改革阵痛的考验，就会前途无限。     

Influence of ultra-fine fly ash on hydration shrinkage of cement paste

1INTRODUCTION Hydrationshrinkageisalsoknownaschemicalshrinkage[1].Thesolidvolumeincreasesafterce menthydrating,buttheabsolutevolumeofcementwatersystemreduces.Usuallythetotalamountofvolumeshrinkageofcementwatersystemis7%9%[1,2].Withthedevelopmentofthetechno logyofcementandconcrete,concretewithhighstrengthandhighperformanceisthedevelopingtendencynow.However,nowadays,comparedwithordinaryconcrete,thehydrationshrinkageofhighperformancecementconcreteincreasesobvi ouslybecauseoftheaccelerationof…     

Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys

The effect of strain rate on the yield strength of high Nb containing TiAl alloy was studied. The results show that the strain rate sensitivity varies with the test temperature, and the yield strength is not sensitive to the strain rate at room temperature but significantly sensitive to the strain rate at high temperature. An increase of the strain rate or a decrease of the temperature results in an obvious change of fracture mode. It is found that the strain rate sensitivity of this alloy varying with temperature is due to the dislocation climb generated at high temperature.     

Thermoelectric properties of p-type （Bi0.15Sb0.85）2Tes-PbTe graded thermoelectric materials with different barriers

The p-type （Bi0.15Sb0.85）2Te3 and PbTe are typical thermoelectric materials used for low and middle temperature range and functional graded materials （FGM） is an inevitable way to widen the working temperature range. Here two segments graded thermoelectric materials （GTM） consisting of （Bi0.15Sb0.85）2Te3, PbTe and different barriers were fabricated by the common hot pressure method. Metals Fe, Mg and Ni were used as barriers between the two segments. The diffusion of different barriers between the barriers and bases were analyzed by electron microprobe analysis （EMA）. The phase and crystal structures were determined by X-ray diffraction analysis （XRD）. The thermoelectric properties were measured at 303 K along the direction parallel to the pressing direction. The results show that the compositional diffusion occurs when there is no barrier at the interface of the two segments, and the diffusion of Pb is most obvious; as the barrier material, the diffusion of metals Fe, Mg and Ni between different bases is not very obvious, and the thermoelectric properties of GTM is much better than that of the original segment.     

锂离子电池正极材料LiMn2O4的制备技术及其研究进展

尖晶石LiMn2O4是最有希望替代LiCoO2的新一代锂离子电池的正极材料。本文对锂离子电池的工作原理和3种正极材料作了简要介绍。综述了近年来LiMn2O4制备技术的研究进展,并对其今后的发展进行了展望。