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还原过程     
相关语句
  reduction process
    Research of Doping Mechanism of Si, Al and K in the Reduction Process of Tungsten Oxide
    氧化钨还原过程中Si、Al、K掺杂机制的探讨
短句来源
    INTENSIFICATION OF REDUCTION PROCESS IN DR KILN
    直接还原回转窑还原过程的强化
短句来源
    Foaming Behavior of Molten Slags Containing FeO in Its Reduction Process
    含FeO熔渣还原过程起泡行为研究
短句来源
    KINETICS AND MATHEMATICAL MODEL FOR REDUCTION PROCESS OF IRON ORE BRIQUETTE CONTAINING CARBON
    含碳球团还原过程动力学及模型
短句来源
    INVESTIGATION ON THE SLAG-IRON SEPERATION OF LOWGRADE REFRACTORY IRON ORE IN DIRECT REDUCTION PROCESS
    低品位难选铁矿在直接还原过程中渣铁分离的研究
短句来源
更多       
  reduction processes
    ANALYSIS OF COAL CONSUMPTION IN COAL-BASED DIRECT REDUCTION PROCESSES
    煤基直接还原过程的燃耗分析
    EXPERIMENTAL STUDIES ON DIRECT REDUCTION PROCESSES OF CARBON-CONTAINING PELLETS IN OPEN-FIRED ATMOSPHERE
    敞焰加热含碳团矿直接还原过程的试验研究
短句来源
    THE STUDY OF PELLETS REDUCTION PROCESSES BY SHAFT REDUCTION
    水煤气条件下球团矿竖炉还原过程研究
    In different atmosphere, the reduction processes of vanadium oxide are different, and in the atmosphere of N2, the reduction reaction is easier.
    在不同的气氛条件下,钒氧化物的还原过程不同,在氮气气氛下,有利于还原反应的进行。
短句来源
    An accidence investigation on the application of mass transport and chemical reaction of the metallurgical reaction engineering in reduction processes of metal powder was carried out in the present paper.
    就冶金反应工程学中的质量传输及化学反应在金属粉末还原过程中的应用进行了初步探讨。
短句来源
更多       
  reducing process
    DISCUSSION ON RATE OF REDUCING PROCESS FOR THE IRON ORES
    铁矿石还原过程速率探讨
短句来源
    Diffusion of (WO3) and (Mo()3) is the restrictive factor in reducing process of (WO3) and (MoO3) respectively.
    (WO_3)和(MoO_3)还原过程的限制性环节分别是WO_3及MoO_3在熔渣中的扩散。
    The results indicate that the temperature has the most impact on the Fe~(3+) reducing rate during the reducing process,and the Fe~(3+) reducing rate was about 95% in the solution reduced 3 hours at 95℃ with the quantities of zinc concentrate was 1.2 times than the theory.
    结果表明,还原过程中温度对Fe3+的还原率影响最大,在95℃还原3 h、锌精矿过量1.2倍情况下,溶液中Fe3+的还原率在95%左右;
短句来源
    The results show: there is no crystal transformation or anisotropy during the reduction of magnetite. What's more, the volume contracts (reducing swelling ratio is -3.24%). The cold-bonded pellet with porous, good reducing properties and quick formation of ferrum has good heat strength in reducing process.
    采用电子显微镜、扫描电镜及X射线衍射分析等测试手段对添加F粘结剂的冷固结球团的热态性能研究表明:在Fe_3O_4还原过程中,既无晶形转变又无晶体的各向异性效应,以至体积还略微收缩(还原膨胀率为-3.24%),且具有孔隙发达、还原性能优良等特性,能快速还原产生金属铁,较好地保证了还原过程强度。
短句来源
    The technology of making tool and die steels of high tungsten content and high molybdenum content with scheelite and molybdenum oxide completely instead of ferrotungsten and ferromolybdenum was initiated successfully in 20t AC EARThe reducing process of scheelite and molybdenum oxide can be classified into solid-solid reaction, liquid-solid reaction, reaction in molten steel and slag-melt reaction according to reaction temperature.
    将白钨矿和氧化钼的还原过程,按反应温度的不同分为固-固反应、液-固反应、铁浴反应和液-液反应等多种还原反应。
短句来源
更多       
  reduction procedure
    Experimental Research on Carbon Reduction Procedure of Reduction Iron Powder Prepared by Ultra-pure Iron Concentrate Powder
    超纯铁精矿粉制备还原铁粉碳还原过程试验研究
短句来源
    It was shown that sulphur was almost completely absorbed by calcite in the ore, forming anhydrite (CaSO_4) which was, in turn, reduced to oldhamite (CaS) in the subsequent reduction procedure. The latter was exactly the source of unsaturated sulphur in the ammoniacal leaching circuit.
    实验表明,几乎重油中所有的硫均为矿石中的CaCO_3吸收并形成CaSO_4,后者在还原过程中又生成CaS,这正是氨浸工序中不饱和硫的来源。
短句来源
    Its reduction procedure agrees many cores reduction model.
    整个还原过程呈现多核还原。
短句来源
    The influences of technical parameters on the reduction procedure were understood through detecting the composition of flue gas and analyzing the chemical compositions of ingot and slag. It is considered that the recycling process of direct reducing EAF stainless steelmaking dust was practicable,the quality of steel was not affected by this process.
    通过气体成分的检测、钢锭和炉渣的成分分析 ,了解工艺参数对还原过程的影响 ,认为电弧炉粉尘直接还原回收工艺切实可行 ,不影响钢产品质量 ,为该新工艺的生产实践提供了依据。
短句来源

 

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  reduction process
Nitrous oxide formation and emission in selective non-catalytic reduction process
      
It was also found that the peak current of Br- and I- was in direct proportion to the scan rate, which is indicative of a surface confined reduction process.
      
The presence of ruthenium(IV) oxide substantially changes the kinetics of the reduction process.
      
The presence of ruthenium(IV) oxide substantially changes the kinetics of the reduction process.
      
The temperature-programmed reduction spectrum exhibited two reduction peaks: one, with Tmax = 250°C, corresponds to the reduction process Cr2O3 → CrO and the other, with Tmax = 360°C, corresponds to the reduction Fe2O3 → Fe3O4.
      
更多          
  reduction processes
It was shown that all compounds in solution of dichloromethane undergo two single-electron reduction processes.
      
First reduction processes of both the PdPc complexes have shoulders.
      
Analysis was performed of reduction processes of epoxy derivatives obtained from unsaturated compounds belonging to various groups: alkenes, cycloalkenes, spiroalkanes, and substituted norbornenes.
      
Iron in Oxidative and Reduction Processes in Marine Sands
      
The hydrodynamics of a reaction zone is considered where there are reduction processes accompanied by release of gaseous products bubbling a liquid.
      
更多          
  reducing process
Results indicate that the success of fabrication depends on the reducing process of pore treatment.
      
Partial transformation of the alcohol monoterpenes was observed and resulted in inhibition of the nitrate-reducing process and cessation of further utilization of the added monoterpenes.
      
The hydrocarbon monoterpenes formed may have been responsible for the observed inhibition of the nitrate-reducing process and lack of complete utilization of the alcohol monoterpenes.
      
These results have significant implications for the expected rate and extent of biotransformation of monoterpenes under anoxic conditions as well as their effect on the nitrate-reducing process in both engineered and natural systems.
      
This paper explains, from a quantitative approach, that reducing process variation is not enough to solve quality problems.
      
更多          
  reduction procedure
Methods: Epirubicin-CDMN (EPI-CDMN) and green fluorescent protein (GFP) plasmid-CDMN (GFP-CDMN) were prepared by the oxidation-reduction procedure and their characters were detected, respectively.
      
A reduction procedure to obtain ground states of spin
      
For a three-body decay process with a discrete kinetic energy release we have developed a novel data reduction procedure based on the detection of two fragments.
      
A geometric reduction procedure for volume-preserving flows with a volume-preserving symmetry on an n-dimensional manifold is obtained.
      
Second, by using a special reduction procedure, the number of branches in the decomposition can be controlled effectively.
      
更多          
  其他


Extensive studies have been made on the so called catastrophic swelling during reduction of pellets made from certain kinds of high-grade iron concentrates. As far as we know, no informations have been published on swelling of pellets made from titanio-magnetite concentrate in literatures.

某些高品位铁精矿球团在用气体(H_2或CO或其混合物)还原时发生所谓的灾难性膨胀的问题,早已多有报道.以钒钛磁铁矿为原料的球团的还原膨胀性质的研究尚未进行过.为解决钒钛磁铁矿球团竖炉直接还原过程中发生的灾难性膨胀问题,在实验室中用光学投影法研究了氧化钠化球团还原时的特性.不附加任何添加剂的氧化球团(TY)升温还原到550~750℃时发生正常膨胀,最大线膨胀率为4~7%.添加5~6%芒硝的氧化球团(6NTY)在同样条件下发生灾难性膨胀,最大线膨胀率15~30%,膨胀后的球团严重粉化,一触即溃.但6NTY球团在高于~1100℃恒温还原时,仅作正常膨胀.用控制气体还原位的方法分步还原实验结果表明,6NTY球团的灾难性膨胀及TY球团的正常膨胀都是发生在赤铁矿-磁铁矿转变阶段,这与国外研究者提出的在浮土体-金属铁阶段生成的铁须导致球叫灾难灶膨胀的观点不同.用弱还原性气氛(例如CO/CO_2=1/99的还原气体)对球团作磁铁矿化处理,消除了赤铁矿,从而完全消除了灾难性膨胀.磁铁矿化球团(6NTM, 6NTYM, 6NTYVM)的还原膨胀值仅~1.5%,相当于球团的热膨胀值.提出了磁铁矿化指标α=Fe~(3+)...

某些高品位铁精矿球团在用气体(H_2或CO或其混合物)还原时发生所谓的灾难性膨胀的问题,早已多有报道.以钒钛磁铁矿为原料的球团的还原膨胀性质的研究尚未进行过.为解决钒钛磁铁矿球团竖炉直接还原过程中发生的灾难性膨胀问题,在实验室中用光学投影法研究了氧化钠化球团还原时的特性.不附加任何添加剂的氧化球团(TY)升温还原到550~750℃时发生正常膨胀,最大线膨胀率为4~7%.添加5~6%芒硝的氧化球团(6NTY)在同样条件下发生灾难性膨胀,最大线膨胀率15~30%,膨胀后的球团严重粉化,一触即溃.但6NTY球团在高于~1100℃恒温还原时,仅作正常膨胀.用控制气体还原位的方法分步还原实验结果表明,6NTY球团的灾难性膨胀及TY球团的正常膨胀都是发生在赤铁矿-磁铁矿转变阶段,这与国外研究者提出的在浮土体-金属铁阶段生成的铁须导致球叫灾难灶膨胀的观点不同.用弱还原性气氛(例如CO/CO_2=1/99的还原气体)对球团作磁铁矿化处理,消除了赤铁矿,从而完全消除了灾难性膨胀.磁铁矿化球团(6NTM, 6NTYM, 6NTYVM)的还原膨胀值仅~1.5%,相当于球团的热膨胀值.提出了磁铁矿化指标α=Fe~(3+)/TFe-0.70TiO_2作为事先检验球团还原膨胀性质的判据.研究结论已为四川省冶金研究所进行的扩大试验结果所证实.

This experimental investigation suggests a new flowsheet for the hydrometallurgy of zinc. The flowsheet possesses several advantages: no alkali consumption, high recovery of rare metals, high quality of purified solution, ease of filtration of iron-rich leach residue, etc. After scaling up to one-cubic meter capacity, the experiment has proven that: (1) high-temperature zinc calcine is amenable to hydrometallurgical extraction with excellent results; (2) zinc sulfite is an active reducing agent capable of performing...

This experimental investigation suggests a new flowsheet for the hydrometallurgy of zinc. The flowsheet possesses several advantages: no alkali consumption, high recovery of rare metals, high quality of purified solution, ease of filtration of iron-rich leach residue, etc. After scaling up to one-cubic meter capacity, the experiment has proven that: (1) high-temperature zinc calcine is amenable to hydrometallurgical extraction with excellent results; (2) zinc sulfite is an active reducing agent capable of performing reduction at low temperature, in a short time, with small excess of reagent and high reductive rate. The required zinc sulfite may be prepared by using zinc calcine or flue dust to absorb the acid waste gases (containing 0.2-0.5% SO_2), thus simultaneous solving the waste gas pollution problem; (3) The enrichment of indium by cyclic leaching operations not only simplifies the flowsheet but also increases its enrichment factor in solution; (4) a high speed oxidation of ferrous ions is guaranteed by using a turbo-stirrer; and (5) the use of limestone as a neutralizing agent for part of the spent cell acid can achieve acid equilibrium in the system and obtain an iron residue with low zinc content.

本试验研究提供了一个湿法炼锌的新型流程。此流程具有:不耗碱、稀散金属回收率高、溶液质量好、铁渣过滤快等优点。1m~3扩大试验证实:(1) 高温锌焙砂用于湿法炼锌效果良好;(2) 亚硫酸锌是一种活性还原剂,还原过程温度低、时间短、过剩系数小、还原率高。亚硫酸锌可由制酸尾气(含SO_20.2~0.5%)用焙砂或烟尘吸收获得,同时顺便解决了废气污染问题;(3) 采用循环富集沉铟,既简化流程又提高铟的富集倍数;(4) 使用透平搅拌保证了Fe~(2+)的高速氧化;(5) 采用石灰石作中和剂解决了系统的酸平衡问题并获得贫锌铁渣。

The Mineralographical composition and reduction process of three fine concentrates of V-Ti-bearingmagnetite are studied. The main Mineralographical composition of A, B fine concentrates involves magnetiteand ilmenite. The observed net-like microstructure is the oxidization product of ulvospinel V_(iz),ilmenite and magnetite It was observed that the ulvospinel was reduced through ilmenite in thetemperature range of 500-800℃. and that the ilmenite during the reductionprocess went also throughulvospinel when residual...

The Mineralographical composition and reduction process of three fine concentrates of V-Ti-bearingmagnetite are studied. The main Mineralographical composition of A, B fine concentrates involves magnetiteand ilmenite. The observed net-like microstructure is the oxidization product of ulvospinel V_(iz),ilmenite and magnetite It was observed that the ulvospinel was reduced through ilmenite in thetemperature range of 500-800℃. and that the ilmenite during the reductionprocess went also throughulvospinel when residual iros oxide existed Preoxidization of ilmenite ore in coarse grains mayimprove its reducibility considerably. Concentrate B appears to be overreduced at 600℃.

本工作对钒钛磁铁矿中三种精矿粉的物相组成及还原过程进行了研究。 A、B二铁精矿的主要物相组成为磁铁矿和钛铁矿,其中网格状显微结构是钛铁晶石的氧化产物——钛铁矿和磁铁矿。在500~800℃温度范围内观察到钛铁晶石在还原过程中经过钛铁矿。钛铁矿在还原过程中若有过剩的氧化铁存在,也经过钛铁晶石。粗粒钛铁矿经过预氧化可显著改善其还原性。B矿在600℃开始出现过还原。

 
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