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炉渣
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  slag
    DETERMINATION OF IRON(Ⅲ)IN THE SLAG OF BLAST FURNACE WITH HIGH TITANIUM
    高钛炉渣中的Fe(Ⅲ)的测定
短句来源
    THE FORM OF OCCURRENCE OF URANIUM IN THE HIGH BORON SLAG
    铀在高硼炉渣中存在形式的研究
短句来源
    Physical chemistry of Vacuum slag Cleaning
    炉渣真空贫化的物理化学
短句来源
    STUDY ON KINETICS OF PEROVSKITE PHASE PRECIPITATE IN SLAG BEARING TITANIUM
    含钛炉渣中钙钛矿相析出动力学研究
短句来源
    Determination of 8 Elements in Blast-furnace Slag and Electric-frunace Slag by XRF
    X-射线荧光光谱法测定高炉渣和电炉渣中8种常见元素
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  furnace slag
    Rapid analysis of TiO_2 in blast furnace slag by XRF
    X射线荧光光谱法快速分析高炉渣中TiO_2
短句来源
    Determination of Al_2O_3 in blast furnace slag by X-Ray fluorimetry
    X射线荧光光谱法测定高炉渣中的Al_2O_3
短句来源
    Determination of LF-VD Refining Furnace Slag by X ray Fluorescence Spectrometry
    X荧光光谱法分析LF-VD精炼炉炉渣
短句来源
    Kinetics of non_isothermal precipitate process and crystal growth of perovskite (CaO·TiO 2) phase in blast furnace slag bearing titanium were studied.
    研究了非等温过程含钛炉渣中钙钛矿相 (CaO·TiO2 )的析出和长大动力学规律 .
短句来源
    This method is used in the determination of the calcium and magnesium contents in samples such as dolomite, limestone and open-hearth furnace slag, with a relative windage of ±0.2%.
    用于白云石、石灰石、平炉渣等样品中钙、镁含量的测定 ,相对偏差为± 0 .2 %左右
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  “炉渣”译为未确定词的双语例句
    High Speed Analysis of Silicon Dioxide in Steel Plant Slags
    钢厂炉渣中二氧化硅的高速分析
短句来源
    Gas Volumetric Determination of Metallic Iron and Ti (Ⅱ) in High Titanium Slags
    气体容量法测定高钛炉渣中的Fe°和Ti(Ⅱ)
短句来源
    Pulse Heat-Gas Chromatographic Determination of Nitrogen in Slags Containing Titanium
    脉冲加热气相色谱法测定高钛型炉渣中的氮
短句来源
    Study on Nonstoichiometry of Chromium Oxides in CaO-SiO_2-Al_2O_3-MgO-Na_2O-CrO_x Molten Slags
    CaO-SiO_2-Al_2O_3-MgO-Na_2O-CrO_x炉渣中铬氧化物的非化学计量研究
短句来源
    By means of scann ing electron microscope and field ion microscope,it has been shown that there are new chemical phases Ti, C_2S_2, FeO·V_2O_3 and (V,Ti)C_2in slags. At present, the chemical phase V_(Me).
    用扫描电子显微镜和场离子显微分析查明炉渣中有Ti_4CS_2和Fe·V_2O_3、(V、Ti)C_2等新的化学物相。
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  slag
The penetration has a relationship with the separate distribution of slag on the weld surface.
      
Then, an observation of scanning electron microscopy (SEM) and an electronic data systems (EDS) analysis of slag were performed respectively.
      
The separate distribution of slag on the weld pool during welding and the great constriction of arc spots were confirmed by TIG welding with helium shielding gas.
      
The relationship between slag distribution and weld penetration was studied by adding aluminum powder into flux AF305 to change the distribution of slag.
      
During welding, the separate distribution of slag on the weld pool results in the great constriction of arc spots, an increase in arc spot force, and an increase in Lorentz force within the arc and weld pool.
      
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  furnace slag
In this study, the effect of the fineness on the high temperature and sulphate resistances of concrete mortar specimens, produced with ground granulated blast-furnace slag (GBFS) replacing cement, is investigated.
      
Mechanisms of phosphate removal from aqueous solution by blast furnace slag and steel furnace slag
      
We report the adsorption of phosphate and discuss the mechanisms of phosphate removal from aqueous solution by burst furnace slag (BFS) and steel furnace slag (SFS).
      
A blended cement containing blast furnace slag and phosphorous slag
      
Blended cement containing blast furnace slag (BFS) and phosphorous slag (PS) is a new kind of cement.
      
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Various procedures for spectrographic analysis of metallurgical slags have been found inthe literature,but,in practice,results are often influenced by the chemical nature of the samples.This paper reports some results obtained on the spectrographic analysis of open-hearth slags bythe copper cup-electrode solution method.An activated a.c.arc (ПС-39) is used as light source.To the nitric acid solution ofslag samples is added stannous chloride (Sn as internal standard) and potassium bromide (Kfor the stablization...

Various procedures for spectrographic analysis of metallurgical slags have been found inthe literature,but,in practice,results are often influenced by the chemical nature of the samples.This paper reports some results obtained on the spectrographic analysis of open-hearth slags bythe copper cup-electrode solution method.An activated a.c.arc (ПС-39) is used as light source.To the nitric acid solution ofslag samples is added stannous chloride (Sn as internal standard) and potassium bromide (Kfor the stablization of the arcing).The prepared solution is then treated in a hot water-bath.The size and shape of the cup-electrode is so chosen that the height of the solution surface doesnot vary much during exposure.Because of the non-uniform distribution of the elements tobe analysed in the arc column,the slit is illuminated directly from the arc without using lenses.With fixed working curves we have obtained the lime-to-silica ratio of 20 slag samples.The differences between spectrographic and chemical values are less than ±5%.The completeanalysis of a few slag samples has been also carried out and the accuracy is found to be aboutthe same as those published in the literature.Causes for shifts of working curves in the course of experiments and means of prevention,and the problem of the dissolution of slags in nitric acid are discussed.Experiments indicatethat the turbulent effect of solution samples in the cup-electrode during arcing is advantageousand necessary.

本文叙述用杯形铜电极溶液法进行平炉渣光谱分析的一些结果。实验用ПС-39型交流电弧作光源,硝酸溶解渣样,加 SnCl_2(Sn 作内标)和 KBr(K 作燃烧稳定剂),并且把这溶液经过加热处理。再适当地选定了铜杯的大小和形状,和采用了直接照明系统。用固定定标曲线法作了20个渣样的硷度(Ca/Si)分析。与化学分析结果比较相差小于±5%。最后讨论了铜杯溶液法进行分析时定标曲线发生移动的原因和防止的方法,试样在硝酸溶液中溶解的问题,与试样溶液在燃烧过程中的翻腾现象。致谢:参加本项工作一部分的尚有周熙宁、徐升美、王桢枢等同志,谨此致谢。

Following the development of the copper cup-electrode solution method for the spectrogra-phic analysis of open-hearth slags,a series of experiments was carried out to study the volatili-zation process in such a spectral light source.The correlation of the different volatilizationcurves obtained with different experimental conditions revealed that the volatilization processmay be considered as of two stages.The first stage corresponds to the appearence of the firstpeak on the volatilization curve,where no fractional...

Following the development of the copper cup-electrode solution method for the spectrogra-phic analysis of open-hearth slags,a series of experiments was carried out to study the volatili-zation process in such a spectral light source.The correlation of the different volatilizationcurves obtained with different experimental conditions revealed that the volatilization processmay be considered as of two stages.The first stage corresponds to the appearence of the firstpeak on the volatilization curve,where no fractional distillation was observed.It means thatduring this stage,volatilization of the substances into the radiating vapor comes directly fromthe surface of the solution.The second stage corresponds to the appearance of a second peakand the shape and position of this peak is very sensitive to the slight variation of experimentalconditions,which also vary differently for various elements.This tendency toward fractionaldistillation may be directly correlated with the different electrode potentials of the elements.Thus,we regard that the volatilization of the elements,during this stage,into the arc columnis essentially from the inner electrode of the cup.Because of these characteristics of thevolatilization process cited above,substances that do not dissolve in the sample solution can alsoenter into the radiating vapor especially during the first stage from the turbulent solution.Aset of experimental data indicates that the precision of spectral analysis and the position of thecalibration curves are not obviously affected by the fact that open-hearth slags do not alwayscompletely dissolve in an acid solution.The effect of the solvent(HNO_3 and HCl)on the slope of the calibration curves and theinfluence of the anions on the density of the spectral lines of the different analyzing elementswere also briefly studied.Taking into account of the results obtained from the study of the volatilization process of sucha spectral source,we were able to eliminate shifts of the calibration curves in routine analysisof open-hearth slags.This was accomplished by strict control of the height of the surfaceof the solution inside the cup-electrode and careful workmanship of the lower inner electrode.The relative arithmetic mean error of nine independent analyses for all the elements analyzed inslags was within 4%.Preliminary experiments show that this method is also applicable tospectrographic analysis of blast-furnace slags and magnesia.

根据杯形铜电极溶液法用于平炉渣光谱分析所得的初步结果,进行了一系列有关杯形电极溶液电弧光源中燃烧过程的系统试验。在不同情形下测定了溶液中各元素的燃烧曲线,看到曲线上先后有两个高峯出现,因而认为光源中的燃烧过程有两阶段,物质在这两燃烧阶段中进入放电区的方式不同。第一阶段相当于第一高峯出现的期间,在这时并没有分馏现象,这表示溶液中的物质主要是经过溶液的翻腾作用而直接从液面进入放电区的。燃烧过程的后一阶段相当于曲线上的第二高峯的部分,这个峯的形状和位置对于不同元素和不同实验条件很灵敏,有分馏现象出现。根据对于各种分析元素的分解电压,可以认为,溶液中的物质在这个燃烧阶段主要是通过电极心而进入弧柱的。在平炉渣的实际分析中,严格地控制杯中液面的高低和铜电极心的加工规格,所得到各元素的九次独立分析误差都在4%以内。

The optical basicity is related to L function which expresses the Lux-Flood acidity or basicity of oxides.A correlation between Lewis basicity and Lux-Flood basicity and the optical basicity values of such transition metal oxides as Fe(Ⅱ), Fe(Ⅲ),Mn(Ⅱ)have been found.The results of theoretical analysis of the optical basicity with the extended Hckel molecular orbital method are in agreement with those of the Duffy's model.By combining the optical basicity concept with Mas- son's polymerization theory of lipuid...

The optical basicity is related to L function which expresses the Lux-Flood acidity or basicity of oxides.A correlation between Lewis basicity and Lux-Flood basicity and the optical basicity values of such transition metal oxides as Fe(Ⅱ), Fe(Ⅲ),Mn(Ⅱ)have been found.The results of theoretical analysis of the optical basicity with the extended Hckel molecular orbital method are in agreement with those of the Duffy's model.By combining the optical basicity concept with Mas- son's polymerization theory of lipuid silicate ions,an empirical method for cal- culating No~(2-) of multicomponent-slag systems is proposed,and such calculated No~(2-) are well correlated with the sulphur distribution ratio of various types of slag in iron and steel-making.

以表征氧化物酸碱度的 L 函数与光学碱度 A 相关,得到了 Lewis 碱度和Lux-Flood 碱度间的良好相关关系,求得 Fe(Ⅱ)、Fe(Ⅲ)、Mn(Ⅱ)等过渡金属氧化物的 A 值.以扩展休克尔(Hückel)分子轨道计算法半定量地分析了光学碱度,得出了与 Duffy 定性模型一致的结论.运用光学碱度并结合 Masson 的硅酸盐离子聚合理论提出了计算多元系炉渣 No~(2-)的经验方法并由此统一地与钢铁冶炼中各种炉型炉渣的分配比相关,获得了较满意的结果.

 
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