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chemical
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  化学
    Research on the Data Mining in Chemistry and Chemical Engineering
    化学化工数据挖掘技术的研究
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    Research on Application of Heat Pipe Technology to Chemical Reactor
    热管技术在化学反应器中的应用研究
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    Chemical division, "1961 Annual Report of Rubber Research Institute of Malaya",
    马来亚橡胶研究所化学部1961年工作总结
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    A GENERAL EQUATION FOR PHYSICAL AND CHEMICAL RATE PROCESSES
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    More on the Black Chemical Oxidation of Stainless Steel
    再谈“不锈钢的黑色化学氧化”
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  化工
    Solutions Study for Chemical Dynamic Optimization and Their Application
    化工动态优化方法的研究与应用
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    Study on Chemical Process Integration for Multi-objective Optimization Based on Fuzzy Set Theory
    基于模糊理论的化工过程多目标优化集成研究
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    Research on the Data Mining in Chemistry and Chemical Engineering
    化学化工数据挖掘技术的研究
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    Statistics Modeling of the State Space and Monitoring of Chemical Process Systems
    过程系统状态空间统计模型和化工过程监测
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    Research of Continuous Ant Colony Optimization Algorithm and Its Application in Chemical Engineering
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  化学品
    Design and Development of Fine Chemical Technology Network Course
    《精细化学品工艺学》网络课程的设计与开发
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    Regulation—bottleneck and chance for chemical product's development
    法规——化学品发展的瓶颈与机遇
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    Effect of REACH on Chinese Chemical Industry
    欧盟《未来化学品新政策》对我国化工行业的影响
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    Hazard Analysis and Control on Pouring Handling of Hazardous Chemicals in Chemical Tank Farm
    化工罐区危险化学品倒装作业危害分析及控制
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    Ventilation Design of Destruction Establishment for Hazardous Chemical Waste
    危险化学品废物销毁设施的通风设计
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  “chemical”译为未确定词的双语例句
    The Studies of Catalysis and Chemical Reaction Engineering on Hydroesterification of Ethylene to Synthesis of Propionic Ester
    乙烯氢酯基化合成丙酸酯的催化及反应工程研究
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    CALCULATION OF COMPLEX CHEMICAL EQUILIBRIA BY THE METHOD OF INDEPENDENT COMPONENTS
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    A Thermodynamic Analysis of The Chemical Vapor Deposition of Ga_xAl_(1-x)N from Al-Ga-HCl-NH_3-H_2 System
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    China's chemical industry in 1984
    1984年中国化学工业
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  chemical
Based on the polymer and plastic analogy, the annual market for products that carry nano-components, including all computer chips, half of pharmaceuticals and half of chemical catalysts, will reach $1 trillion by 2015.
      
The structural information of the glucan was achieved by chemical (hydrolysis, methylation, periodate oxidation) and spectroscopic (1H and 13C) analyses, indicated a repeating unit built up of (1→6)-linked D-glucose.
      
CHEMICAL GENOMICS FOR FASTAND INTEGRATED TARGET IDENTIFICATION AND LEAD OPTIMIZATION
      
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During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses...

During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses of the inner surface of the brick samples show a high percentage of alkali-,alkaline earth-and fluoride-ion contents. But as the amount of melt formed at the temperatures on these zones is comparatively little, that corrosion is not severe.Minerals identified at the stack lining surface consist of: fluorite, fluoro-biotite, kaliophilitenephelite, leucite, cuspidine and spinels etc. This is the first time that mica minerals have ever been identified in blast furnace linings. It is thought that the formation of fluoro-biotite has fixed a part of the F~-, K~+ or Ca~(2+)-ions, which would otherwise go into the melt. Thus its formation actually exerts some protective action against the corrosion of the stack lining.The higher temperatures prevailing in the bosh region in contrast to the stack caused the formation of a much larger amount of fluoride-containing melt, which is probably responsible for the remarkable degree of Corrosion on the bosh refractories.High temperature experiments carried out in the laboratory on the reactions betwccn CaF_2 and 45%-Al_2O_3 brick powder in closed graphite crucibles throw light to explain the process of corrosion of the furnace lining. Hexagonal anorthite was identified in all of these experimtnts, which has identical optical properties and X-ray diffraction patterns with those of hexagonal anorthite synthesized in our laboratory. It is also interesting to note that these hexagonal anorthites change over to normal triclinic modification under heat treatment at 1000℃ for a period of 24 hours.As a result of this and other previous studies in this laboratory, the appropriate selection of refractory materials for the lining of blast furnaces, smelting iron (?)e containing high fluoride content, is recommended.

在某地高氟含量铁矿石的冶炼过程中,炉缸粘土质高炉砖砖视遭到了极其严重的破坏作用。主要侵蚀介质是含氟炉渣,侵蚀产物容易从砖面流失,因而加速了耐火材料的溶解。在炉身部位发现的矿物是:氟化钙、含氟黑云母、钾和钠的铝矽酸盐、枪晶石及尖晶石等。虽然在砖面附着物中包含着相当数量的氟、硷金属及硷土金属的化合物,但是由于温度较低,只有少量熔体出现,砖衬的损毁情况,并不严重。在高炉砖衬中发现云母矿物,还是第一次。在炉身部位的温度条件下,含氟黑云母具有固定F~-,K~+成Ca~(+2)的能力,对砖机起了保护作用。由于炉腹部位的温度较高,较大量含氟熔体出现,侵蚀就相当显著了。 CaF_2—45%Al_2O_3高炉砖的化学反应实验,可以帮助了解高炉砖视的损毁过程。反应产物中发现有六方钙长石,与实验室合成的六方钙长石具有一致的光学性质和X—射线粉末衍射图型。经过1000℃,24小时热处理后,这种六方钙长石会转变成为三斜晶系变体。 根据两个高炉砖衬的化学-矿物学研究及实验室中辅助研究的结果,对于冶炼高氟含量矿石的高炉砖衬的选择提出了建议。

The wetting and chemical action of molten calcium fluoride and five fluoridecontaining slags with various basicity (1.5~3.2) and fluoride content (10~24% F) on carbon refractories at 1400℃ was studied. The results indicated that corrosion is negligible. Carbon blocks may therefore be highly recommended for the hearth lining of blast furnace for the smelting of fluoride-containing iron ore.

研究了氟化钙及不同硷度(1.5~3.2)、氖含量(10~24%F)的五种含氟高炉渣对于炭素耐火材料的化学、润湿作用(1400℃)。实验结果表明,其侵蚀程度十分轻微,故炭砖应可满意地用作冶炼含氟铁矿石高炉的炉缸砖衬。

By means of chemical, X-ray, magnetic and microscopic analyses the present investigation leads to the following conclusions:1. Fushun oil shale residue consists in the main of α-quartz, γ-Al_2O_3 and Fe_3O_4.2. The particles of these phases are exceedingly small (<3μ). They are not expected to be separable by ordinary physical methods.3. In accordance with the theory of the formation of oil-shale, Kerogen lies very probably in the lamellar gaps.

水文对抚顺发页岩的物相组成进行了初步的研究,并且探讨了油母在油页岩中所处的位置。应用化学分析、X射线分析、磁性分析和显微镜研究可以得到下面的结论: 1.抚顺发页岩的主要物相是α—石英,γ—Al_2O_3和Fe_3O_4。 2.这些物相的颗粒很小(<3μ)。很难用通常的物理方法把它们分离成各个物相。 3.油母很可能处于各物相之间的层状间隙中,与油母页岩的形成理论相一致。

 
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