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回旋区
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  raceway
     Investigation of Tuyere Raceway of BF 2000m~3 for PISC
     攀钢2000m~3高炉风口回旋区特征的研究
短句来源
     Study of the Digitization in Terms of the Temperature Field of Radiation Image in the Tuyere and Raceway of Blast Furnace
     高炉风口回旋区辐射图像温度场的数字化研究
短句来源
     PDA Measurements on the BF Raceway Model and Numerical Calculation Study
     高炉回旋区模型PDA测试及数值模拟研究
短句来源
     Research and Application of Temperature-field Digitalizing of the Tuyere and Raceway Section in Blast Furnace
     高炉风口回旋区断面温度场数值化研究与应用
短句来源
     ③controlling the cohesive zone shape by improving burden distribution,and adjusting of the raceway condition.
     ③改进炉料分布,控制软熔带形状,调节回旋区状况。
短句来源
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  raceway zone
     In this paper,Two major limitation factors of Coal-Water Slurry (CWS) injection into B.F. ,raceway adiabatic flame temperature(RAFT) reduction and CWS droplet burn-out rate in raceway zone, were calculated respectively on the basis of principles of chemical thermodynamics and combustion reaction kinetics. The relations of CWS properties and its operation parameters were obtained when the blast temperature and moisture were given.
     本文分别用化学热力学及燃烧反应动力学理论对高炉喷吹煤水浆的两个主要限制因素,即高炉风口回旋区绝热火焰温度的降低及煤水浆的燃尽率进行了计算,得到了在一定鼓风温度及湿度条件下的煤浆特性与操作参数之间的关系,并且讨论了喷吹煤浆对整个高炉生产的影响。
短句来源
     An unidimensional mathematical model is developed to describe the behaviours within the raceway zone of a blast furnace with simultaneous injection of pulverized coal and fine ore.
     在气粉两相流运动方程基础上,联立气体循环流模型和煤粉、矿粉、焦炭和气相燃烧等反应的动力学方程及各相之间的传热方程、建立了高炉风口回旋区的一维数学模型。
短句来源
  “回旋区”译为未确定词的双语例句
     The model is applied to the simulations of 3-D gas-particle flows and pulverized coal combustion in the 750 m~3 blast furnace. The cold two-phase flow predictions are compared with the PDPA measurements,general agreement is achieved between the calculated results and test data,the average relative error is 11.6%.
     将所建模型分别对冷态模型内气粒两相流动和某企业750 m3高炉风口回旋区内的气固两相三维流动和煤粉燃烧进行了数值模拟,并采用PDA对冷态模型内气粒两相流场进行了测量,结果表明,实验结果与冷态两相流动的模拟结果基本一致,平均相对误差为11.6%;
短句来源
     The pulverized coal feeding and burning cases can be supervised by peehole in tuyere. Temperature distribution can be studied by brightness and numerical simulation of pulverized coal combustion.
     风口前的监测可以获得喷煤高炉在风口处煤粉输送情况,还可以根据风口亮度与煤粉燃烧数值模拟结合,研判煤粉在风口回旋区的燃烧状况及温度分布等.
短句来源
     The model is applied to the simulations of 3-D gas-particle flows and pulverized coal combustion in the 750 m3 blast furnace.
     用所建模型分别对冷态模型内气固两相流动和某企业750 m3高炉风口回旋区内的气固两相三维流动与煤粉燃烧进行了数值模拟。
短句来源
     The physical modeling and numerical simulation methods was used in this paper.
     在系统地分析整个风口回旋区的物理和化学反应机理的基础上,采用了物理模拟与数值模拟相结合的方法。
短句来源
     Influence of different tuyere diameter,length and coke particle sizes composition on radial length,width,height and volume in BF tuyere rotary region is studied by calculation.
     通过计算,研究了不同风口直径、风口长度和高炉风口焦炭不同粒度组成对高炉风口回旋区的径向长度、宽度、高度和体积的影响。
短句来源
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  raceway
The development of a cavity or a raceway can result in three types of variations of pressure drop with time: stabilization, slight fluctuation and severe fluctuation.
      
The analyses of two structure case, that roller length is greater or less than raceway width, were carried out and compared with each other.
      
Laboratory experiments using small raceway ponds have shown that Spirulina maxima can be adapted easily to grow in sea-water supplemented with nitrate, phosphate, bicarbonate, and Fe-EDTA.
      
Mechanical complications involving the bypass circuit included roller-pump raceway rupture, roller-pump failure, and membrane oxygenator failure.
      
Detection of outer raceway bearing defects in small induction motors using stator current analysis
      
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  raceway zone
Gas flow distributions around the raceway zone are also examined.
      
Substantial liquid holdup was found above the raceway zone.
      


In this paper an attempt has been made,by a model test, to find out the behavior of flow of primary slags in blast furnace. It has been verified that the slags within softening-melting zone flow downward along the declination of this zone and gether together at its lowest part where the slags fall down. Therefore, slags near to the wall flow downward rather more than in the middle part of the furnace when the softening-melting zone is of a shape of inverse V. Conversly, slags in the middle part flow downward...

In this paper an attempt has been made,by a model test, to find out the behavior of flow of primary slags in blast furnace. It has been verified that the slags within softening-melting zone flow downward along the declination of this zone and gether together at its lowest part where the slags fall down. Therefore, slags near to the wall flow downward rather more than in the middle part of the furnace when the softening-melting zone is of a shape of inverse V. Conversly, slags in the middle part flow downward rather more when the zone V-shaped. As to the W-shaped zone, an intermediate state would be appeared. In tuyere region, the flow path of slags change again due to the effect of gas flow in raceway, such that a dry region below raceway occurs. Based on the analysis above, a model to show the behavior of slag flow in blast furnace has been developed qualitatively.

本文试图通过模型试验对高炉内初渣流动规律性问题进行研究。试验证明,在高炉中的成渣带(软融层)内的渣沿成渣带向下流动,并在其最低处汇聚后流下。因而,成渣带呈倒V形时,边缘部份流下的多;呈V形时中心部份流下的多;W形则介于二者之间。在风口区,下降的炉渣,由于受到回旋区气流的影响,流动轨迹又发生变化,在回族区下方出现干区。根据以上分析,定性地做出了高炉内炉渣流动模型。

This paper discusses the blast furnace practice at Wuhan Iron and Steel Company. Based on investigation carried out on the actual furnace operation and on an 1:1 cold model, it is pointed out that: (1) the kinetic energy of tne tuyere blast bears no relation to the depth of penetration of the raceway,which is really a function of the tuyere blast momentum divided by the burden column resistance; (2) anomalies in the distribution of sinter burden are mainly caused by the sinter being too small-sized;(3) raising...

This paper discusses the blast furnace practice at Wuhan Iron and Steel Company. Based on investigation carried out on the actual furnace operation and on an 1:1 cold model, it is pointed out that: (1) the kinetic energy of tne tuyere blast bears no relation to the depth of penetration of the raceway,which is really a function of the tuyere blast momentum divided by the burden column resistance; (2) anomalies in the distribution of sinter burden are mainly caused by the sinter being too small-sized;(3) raising the MgO content of the blast furnace slag to 9—12% by means of adding dolomite to the sinter charge favours the production of low silicon, low sulphur hot metal; (4) an improvement of the permeability of the burden materials is the key link of a satisfactory blast furnace operation.

本文叙述了武钢高炉操作的特点。根据在生产高炉上及1比1冷态模型中进行的研究工作,作者指出:(1)风口回旋区长度与风口动能无关,而是风口鼓风动量除以料柱阻力的函数;(2)烧结矿布料反常系由烧结矿粒度小所造成;(3)烧结矿中加白云石,将MgO含量提高至9~12时,对冶炼低硅低硫铁有利;(4)改善炉料透气性是高炉操作的中心环节。

This paper discussed the relations between the optimum distribution pattern of gas flow, thesize of furnace, and behavior of raw materials etc., with low fuel rate, based upon practical operationof blast furnaces at home and abroad in association with the investigation of furnace dissection,surveyof charging profile at the stockline level before blowing in and measurement of raceway depth. It is thought that under the present conditions, with improved burden materials more plain CO_2curve of double peaks type,‘W’and‘inverted...

This paper discussed the relations between the optimum distribution pattern of gas flow, thesize of furnace, and behavior of raw materials etc., with low fuel rate, based upon practical operationof blast furnaces at home and abroad in association with the investigation of furnace dissection,surveyof charging profile at the stockline level before blowing in and measurement of raceway depth. It is thought that under the present conditions, with improved burden materials more plain CO_2curve of double peaks type,‘W’and‘inverted V’shape of softening melting zone ore to be sought. The control of the distribution of gas flow and the shape of the softening melting zone dependson parameters of flowing and the charging method, so as to obtain the optimum depth of the racewayand the optimum ratio of ore and coke at the throat. To improve the high temperature behavior of raw materials and fuel and their grain sizeconstituents will be the basis of the optimum distribution of gas flow.

本文根据国内外及鞍钢高炉生产实践,结合高炉解剖调查、高炉开炉前料面测量及回旋区深度测定等,讨论了低燃料比高炉最佳气流分布型式及其与高炉炉容、原料性能等的关系。认为在目前条件下随原料性能改善,应谋求较为平坦的双峰式曲线及“W”、低“倒 V”型软熔带。气流分布及软熔带型式的控制主要是改变鼓风参数以使回旋区深度适宜及采用不同的装料方法来获得适宜的炉喉矿焦比分布。改善原燃料的高温性能和粒度组成是获得最佳气流分布的基础。

 
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