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mass transferring factor
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     Critical nitrogen potential and mass transferring factor of W6Mo5Cr4V2 high speed steel are measured. Nitrogen potential threshold controlled nitriding and optimum diffusion condition controlled nitriding techiques are proposed.
     测定了W6Mo5Cr4V2高速钢的临界氮势rc和传质因子,提出了按氮势门槛值控制的可控渗氮工艺及按最优扩散条件可控渗氮曲线控制的可控渗氮工艺。
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  相似匹配句对
     Mass.
     Mass .
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     Mass Transferring Model of Wet Limestone Desulfurization
     石灰石湿法脱硫的传质模型
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     mass spectrometry;
     质谱分析;
短句来源
     Modei ing of Gas and Liquid Mass Transferring for WFGD Bubbling Reactor
     湿法烟气脱硫法鼓泡反应器的气液传质建模
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     transferring the functions of government;
     领悟WTO规则,转变政府职能;
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In this paper, the new process of treating cyanide - containing waste water from the gold concentration plant by emulsion liquid membrane has been proposed. And established a continuous counter -current extraction equipment which will be able to treat about 10~20 m3 feed solution per day. Effect of mass transfer factors and operation parameters on removal and recovery cyanide has been studied. The data of run indicate that using this liquid membrane process it can effectively recover cyanide and the recovery...

In this paper, the new process of treating cyanide - containing waste water from the gold concentration plant by emulsion liquid membrane has been proposed. And established a continuous counter -current extraction equipment which will be able to treat about 10~20 m3 feed solution per day. Effect of mass transfer factors and operation parameters on removal and recovery cyanide has been studied. The data of run indicate that using this liquid membrane process it can effectively recover cyanide and the recovery cyanide can be reused. The concentration of cyanide ions in effluent can be reduced to below 0. 5 mg/L and meet the national charge standard. In this process, removal rate of cyanide can reach more than 99% and recovery of cyanide is over 90%.The economy estimate from three month run data shows that the liquid membrane process is more economic than other processes in capital cost, chemical consumption and operation costs.

本文提出了一种用乳化液膜法处理金矿含氰废水的新工艺,建立了规模为日处理量10~20m~3的一套小型工业化试验的液膜装置。研究了传质的影响因素及操作参数对除氰和回收氰化钠的影响。经运转操作证明,用该工艺流程能有效地从锌粉置换后的含氰贫液中将氰化钠浓缩回收并可重复使用,同时,使排放液中的游离氰根离子浓度低于0.5mg/L,达到国家排放标准。整个过程,氰的去除率达99%以上,氰化钠的回收率高于90%。经三个月的运转操作进行了经济估算,证明液膜法较其它方法优越。

Critical nitrogen potential and mass transferring factor of W6Mo5Cr4V2 high speed steel are measured. Nitrogen potential threshold controlled nitriding and optimum diffusion condition controlled nitriding techiques are proposed. The brittleness of nitrogen layer of the high speed steel is suppressed successfully. The test also showed that life of cutting tools made from high speed steel is also improved by ten times when they are used to cut materials with moderate hardness and high toughness. These lathe...

Critical nitrogen potential and mass transferring factor of W6Mo5Cr4V2 high speed steel are measured. Nitrogen potential threshold controlled nitriding and optimum diffusion condition controlled nitriding techiques are proposed. The brittleness of nitrogen layer of the high speed steel is suppressed successfully. The test also showed that life of cutting tools made from high speed steel is also improved by ten times when they are used to cut materials with moderate hardness and high toughness. These lathe tools also can cut steel such as 18Cr_2Ni_4W_4 with 37~39HRC smoothly.

测定了W6Mo5Cr4V2高速钢的临界氮势rc和传质因子,提出了按氮势门槛值控制的可控渗氮工艺及按最优扩散条件可控渗氮曲线控制的可控渗氮工艺。成功地抑制了高速钢W6Mo5Cr4V2渗氮层的脆性。试验表明W6Mo5Cr4V2高速钢车刀经过可控渗氮处理切削能力大幅度提高,加工中硬度、高韧度材料时,寿命提高几十倍,并能顺利切削硬度高达37~39HRC的18Cr2Ni4WA钢。

A new model for mass transfer of air bubble in water is established. Comparing with the other models, the new model is closer to real status and the expression of mass transfer factor is obtained, which coincide with that obtained by experiment and lays a foundation for improving the mass transfer effect in actual use.

建立了气泡传质的新的数学模型。与原有的诸模型相比,新模型更接近气泡传质的实际情况,得到了与实验关联式基本一致的传质系数表达式,为在实际中改善传质效果提供了理论依据。

 
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