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首页> 外文期刊>Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science >Mixing and Solid-Liquid Mass-Transfer Rates in a Creusot-Loire Uddeholm Vessel: A Water Model Case Study
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Mixing and Solid-Liquid Mass-Transfer Rates in a Creusot-Loire Uddeholm Vessel: A Water Model Case Study

机译：Creusot-Loire Uddeholm容器中的混合和固液传质速率：水模型案例研究

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摘要

The process of mixing and solid-liquid mass transfer in a one-fifth scale water model of a 100-ton Creusot-Loire Uddeholm (CLU) converter was investigated. The modified Froude number was used to relate gas flow rates between the model and its prototype. The influences of gas flow rate between 0.010 and 0.018 m~3/s and bath height from 0.50 to 0.70 m on mixing time were examined. The results indicated that mixing time decreased with increasing gas flow rate and increased with increasing bath height. The mixing time results were evaluated in terms of specific energy input and the following correlation was proposed for estimating mixing times in the model CLU converter: T_(mix) = 1.08Q~(-1.05)W~(0.35), where Q (m~3/s) is the gas flow rate and W (tons) is the model bath weight. Solid-liquid mass-transfer rates from benzoic acid specimens immersed in the gas-agitated liquid phase were assessed by a weight loss measurement technique. The calculated mass-transfer coefficients were highest at the bath surface reaching a value of 6.40 X 10~(-5) m/s in the sprout region. Mass-transfer coefficients and turbulence parameters decreased with depth, reaching minimum values at the bottom of the vessel.
机译：研究了100吨Creusot-Loire Uddeholm（CLU）转炉的五分之一水模型中的混合和固液传质过程。修改后的弗洛德数用于关联模型与原型之间的气体流速。研究了气体流量在0.010〜0.018 m〜3 / s之间，熔池高度在0.50〜0.70 m之间对混合时间的影响。结果表明，混合时间随气体流速的增加而减少，随熔池高度的增加而增加。根据比能量输入评估了混合时间的结果，并提出了以下相关性以估算模型CLU转换器中的混合时间：T_（mix）= 1.08Q〜（-1.05）W〜（0.35），其中Q（m 〜3 / s）是气体流速，W（吨）是模型浴池重量。通过重量损失测量技术来评估浸入气相气相中的苯甲酸样品的固液传质速率。计算得出的传质系数在浴表面最高，在萌芽区达到6.40 X 10〜（-5）m / s。传质系数和湍流参数随深度降低，在容器底部达到最小值。

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