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An Evaluation Method for co.bustion Characteristics of co.l in Cement industry

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Journal of Wuhan University of Technology(Materials Science) 2010年第1期25卷 174-178页

作者：陶从喜 School of Environmental Science and Engineering Tianjin University Tianjin Cement industry Design and Research Institute co Ltd.

As the co.l co.bustion behaviors are rather co.plex in the cement industry, the traditional assessment method cannot be directly applied to evaluate the quality of co.l. Based on the thermal analysis tests of more than 80 kinds of anthracite and bituminous co.l, three evaluation parameters, namely, burning intensity （I）, average capacity of heat release （Q）, and general burning index （S） are presented, co.bining with the co.sideration of application and calciner types in the cement industry. Taking these three parameters into co.sideration together is necessary. Experimental results show that the co.l with higher S, lower I and higher Q can be rated as the best for the calciner in the cement industry. The quantitative indexes are given to evaluate the bituminous co.l and anthracite in this paper. This new assessment method has implications for the design of calciner in the cement industry.

关键词： co.l burning intensity average capacity of heat release general burning index calciner

Eco.Dyeing and Finishing Technology

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印染 2002年第S1期 76-77页

作者： By Shang Songmin, Fong’s National Engineering (Shenzhen) co. , ltd.

1IntroductionThe overflow dyeing machine and thestenter are widely applied in textiledyeing and finishing *** overflow dyeing machineco.sumes large quantity of water andchemicals that results in the large output of *** belongs tothe high energy co.suming finishing e-quipment and the energy co.sumptionof the co.ventional stemter is enormous.

关键词： Eco.ogyEnvironmental protection Overflow dyeing machine Stenter

Preparation and Characterization of High co.ductivity Aluminium Silico. Alloy

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稀有金属材料与工程 2011年第S3期40卷 185-187页

作者： Liao Wenjun1, 2, Wang Yuxin1, Yu Zhang1, Yang Yinhui1, Dong Gang1, Yan Biao1 1Tongji University, Shanghai 200092, china 2Shanghai Electric Group co., ltd. Central Academe, Shanghai 200070, china Tongji Univ Shanghai Key Lab D&A Met Funct Mat Sch Mat Sci & Engn Shanghai 200092 Peoples R China Shanghai Elect Grp co.ltd Cent Acad Shanghai 200070 Peoples R China

Hypereutectic aluminum-silico. alloy powder of Al-20Si-0.35RE was synthesized by using the inert gas atomization technique. This powder was ball milled for different time and hot extruded subsequently. The microstructure and electrical co.ductivity of alloy were studied by powder particle size analyzer, scanning electron microsco.e, X-ray diffraction and bridge resistance instrument respectively. It is indicated that the powder got by spray method have a better homogeneous distribution. The proper RE amount and milling time improved the co.ductivity due to either microstructural refining or decreasing of Si solid solubility in Al matrix. The co.ductivity changed with ball milling time, while unique high co.ductivity (75%IACS) co.ld be achieved after milling for 12 h and hot-extruded 3 times. This kind of high co.ductivity aluminum-silico. alloy will be a potential co.ductor material which co.ld be extensively used in the electrical engineering field.

关键词： hypereutectic Al-Si alloy gas atomization hot-extrusion co.ductivity

Technical Study on Ultra-Low Sulfur Steel Production in Ansteel

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Journal of Iron and Steel Research International 2011年第S1期18卷 567-571页

作者： XU Xiang-yang (No.1 Steelmaking Plant of Angang Steel co.0},Anshan 114031,china) 1 Steelmaking Plant Angang Steel co.ltd Anshan 114031 Peoples R China

Based on the fact of long period deep desulfurization treatment in LF,the relationships among top slag co.stituent in LF,molten steel co.stituent,stirring ability of blowing argon,molten steel temperature and desulphurization rate were *** the experiments,the parameters about treatment technology of top slag in LF,the [Als] co.tent in molten steel,slag charge match,molten steel temperature and the argon flow for stirring have been *** desulphurization treatment period in LF can be shortened by 5～8 *** target sulfur co.tent in molten steel can be co.trolled below 30 ppm within one LF treatment period which is only 36 *** LF treatment period of ultra-low sulfur steel can primarily match with the co.tinuous casting period,multi-heat co.tinuous casting can be ensured.

关键词： ultra-low sulfur steel LF deep desulphurization treatment

Abnormality of magnetic behavior and co.e loss of nanocrystalline Fe_(73.5)Cu_1Nb_3Si_(15.5)B_7 alloy

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Science china(Technological Sciences) 2010年第2期53卷 343-347页

作者： DONG BangShao1, ZHI QiZheng2, LI DeRen1, LU ZhiChao1 & ZHOU ShaoXiong1 1 Central Iron & Steel Research Institute, Advanced Technology & Materials co., ltd., Beijing 100081, china 2 School of Materials & Metallurgy, Northeastern University, Shenyang 110004, china Central Iron & Steel Research Institute Advanced Technology & Materials Co. Ltd. Beijing China School of Materials & Metallurgy Northeastern University Shenyang China

The co.relation between microstructure and magnetic properties of Fe73.5Cu1Nb3Si15.5B7 alloy annealed at 360°C—620°C has been investigated. The best static and dynamic soft magnetic properties have been obtained after annealing at 500°C and 550°C for 1 h, respectively. The dependence of annealing temperature on co.rcivity has shown three magnetic hardenings for the studied alloys annealed at 460°C, 530°C and 620°C, respectively. And the plot of co.e loss as a function of annealing temperature manifests a peak at 530℃, and this peak increases with increasing magnetic induction at low frequencies. This effect can probably be attributed to the precipitation of a new phase.

关键词： nanocrystalline co.rcivity magnetic hardening co.e loss

TRANSITION OF co.VECTIVE PATTERNS IN A RECTANGULAR CELL

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Journal of Hydrodynamics 2001年第4期13卷 65-71页

作者： Ning Li-zhong Institute of Hydraulic Engineering, Xi’an University of Technology, Xi’an 710048, china Department of Engineering, Nitto co. ltd., Ikebukuro 2-77-5, Toushima-ku, Tokyo 171-0014, Japan Yoshifumi Harada Department of Applied Physics, Fac Inst. of Hydraulic Eng. Xi'an Univ. of Technol. Xi'an 710048 China

In this paper our interest is focussed on the behavior in the transition of the Traveling Wave (TW) co.vective patterns along the nonlinear branch in a rectangular cell of Γ=12 for ψ=-0.11. Our numerical simulations were performed by solving the two-dimensional hydrodynamic equations using the SIMPLE method. Three types of co.vection patterns appearing in the nonlinear branch of the bifurcation diagram were observed. In particular, the undulation TW state in the rectangular cell was obtained, and the hysteresis in the transition from the TW State to the Stationary Overturning co.vection (SOC) was verified.

关键词： co.vection binary mixture undulation traveling wave hysteresis

Novel Fe-based amorphous magnetic powder co.es with ultra-low co.e losses

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Science china(Technological Sciences) 2010年第5期53卷 1290-1293页

作者： ZHANG Liang1,2,LI DeRen1,2,LU ZhiChao1,2,LU CaoWei1,2,LIU TianCheng1,2,GUO Feng2,LIU KaiHuang1,WANG Jun 2 & ZHOU ShaoXiong1,2 1 Central Iron and Steel Research Institute,Beijing 100081,china 2 Advanced Technology and Materials co.,ltd.,Beijing 100081,china Central Iron and Steel Research Institute Beijing China Advanced Technology and Materials co. Ltd. Beijing China

Amorphous magnetic alloy powders were prepared from bulk metallic glasses Fe74Cr2Mo2Sn2P10Si4B4C2 with superco.led liq-uid region of 32 K by water *** magnetic powder co.e precursor was produced from a mixture of the amorphous alloy powder with addition of insulation and bonding materials by mold co.pacting at room *** annealing the co.e precursor,the amorphous magnetic co.e exhibits superior magnetic properties as co.pared with molypermalloy powder *** initial permeability up to 1 MHz was about 80,the flux density at 300 Oe was 1.06 T and the co.e loss at 100 kHz for Bm=0.1 T was only 329 kW/*** ultra-low co.e loss is attributed to the co.bination of relatively high resistivity and the amorphous structure of the Fe-based amorphous *** the outstanding magnetic properties,the Fe-based amorphous magnetic powder co.e had a much lower co.t which renders the powder co.es a potential candidate for a variety of industrial applications.

关键词： Fe-based amorphous powder water atomization amorphous powder co.e ultra-low co.e loss

Cloning, Expression and Identification of a New Trehalose Synthase Gene from Thermobifida fusca Genome

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Acta Biochimica et Biophysica Sinica 2004年第7期36卷 477-484页

作者： Yu-Tuo WEI, Qi-Xia ZHU1, Zhao-Fei LUO1, Fu-Shen LU1, Fa-Zhong CHEN1, Qing-Yan WANG1, Kun HUANG,Jian-Zhong MENG, Rong WANG, and Ri-Bo HUANG*Guangxi Key Laboratory of Subtropical Bioresource co.servation and Utilization, Guangxi University, Nanning 530004, china 1Sinozyme Biotech co. ltd., Nanning 530004, china Guangxi Key Laboratory of Subtropical Bioresource co.servation and Utilization Guangxi UniversityNanning 530004 China Sinozyme Biotech co. ltd.Nanning 530004 China

A new open reading frame in Thermobifida fusca sequenced genome was identified to enco.e a new trehalose synthase, annotated as “glyco.idase” in the GenBank database, by bioinformatics searching and experimental validation. The gene had a length of 1830 bp with about 65% GC co.tent and enco.ed for a new trehalose synthase with 610 amino acids and deduced molecular weight of 66 kD. The high GC co.tent seemed not to affect its good expression in E. co.i BL21 in which the target protein co.ld acco.nt for as high as 15% of the total cell proteins. The reco.binant enzyme showed its optimal activities at 25 °C and pH 6.5 when it co.verted substrate maltose into trehalose. However it would divert a high proportion of its substrate into gluco.e when the temperature was increased to 37 °C, or when the enzyme co.centration was high Its activity was not inhibited by 5 mM heavy metals such as Cu2+, Mn2+, and Zn2+ but affected by high co.centration of gluco.e. Blasting against the database indicated that amino acid sequence of this protein had maximal 69% homology with the known trehalose synthases, and two highly co.served segments of the protein sequence were identified and their possible linkage with functions was discussed.

关键词： trehalose synthase Thermobifida fusca open reading frame (ORF) gene expression

土压平衡盾构刀盘挤土效应及刀盘开口率对盾构正面接触压力影响

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土木工程学报 2009年第7期42卷 113-118页

作者：王洪新上海市第二市政工程有限公司上海200065

土压平衡盾构推进时,由于刀盘挤土作用,盾构必然挤压前方土体,并产生附加接触压力。该附加接触压力是土压平衡盾构在周围土体中产生附加应力的主要来源之一。建立刀盘挤土模型,推导盾构附加接触压力计算公式,该公式综合考虑刀盘开口率... 详细信息

土压平衡盾构推进时,由于刀盘挤土作用,盾构必然挤压前方土体,并产生附加接触压力。该附加接触压力是土压平衡盾构在周围土体中产生附加应力的主要来源之一。建立刀盘挤土模型,推导盾构附加接触压力计算公式,该公式综合考虑刀盘开口率、刀盘转速、推进速度及土层性质等因素。现场监测刀盘开口率40%的土压平衡盾构及刀盘开口率85%的双圆土压平衡盾构推进时在前方土体中产生的附加应力,得到开挖面处的附加接触压力。监测结果证明推导公式的科学性,可以在施工中推算不同参数时盾构施工产生的附加应力,对盾构推进时的环境保护有重要意义。计算公式及监测结果说明,刀盘面板有明显的挤土作用,即使达到出土率的平衡状态,盾构前方依然存在附加应力场,刀盘开口率越小,刀盘转速越慢,推进速度越快,附加压力越大。

关键词：土压平衡盾构刀盘接触压力开口率附加应力