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首页> 外文会议>International Congress on Mineral Processing and Extractive Metallurgy 11 - 13 September 2000 Melbourne, Victoria >An Assessment of Gas-Liquid Interfacial Areas Associated with Bubble Plumes in Pyrometallurgical Gas Injection Systems
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An Assessment of Gas-Liquid Interfacial Areas Associated with Bubble Plumes in Pyrometallurgical Gas Injection Systems

机译：冶金冶金气体注入系统中与气泡羽相关的气液界面区域的评估

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摘要

The past century has seen the development and commercialisation of many new pyrometallurgical processes based on gas injection. The driving force behind this trend in smelting and refining technology was the increased productivity and resulting increase in capital utilisation achievable. However, measurement of system variables is not easy and their effect on the rate of the reactions involved is not well characterised. One of the critical parameters is the gas-liquid interfacial area produced by gas injection. Related variables such as bubble size and velocity, and gas hold-up fractions in aqueous systems have been measured using combinations of physical (visual, audio and electrical) and chemical techniques. Models have been developed relating interfacial area to physical properties and operating variables and attempts made to extrapolate these to high temperature, liquid metal systems. The only attempts at validation of these models have used either low temperature liquid metals, such as mercury or Wood's Metal, or operating plant data.
机译：在过去的一个世纪中，已经看到了许多基于注气的新型火法冶金方法的开发和商业化。冶炼和精炼技术趋势的背后推动力是生产率的提高以及可实现的资本利用率的提高。但是，系统变量的测量并不容易，并且它们对所涉及的反应速率的影响也无法很好地表征。关键参数之一是气体注入产生的气液界面面积。相关变量，例如气泡大小和速度，以及水性系统中的气体滞留率，已通过物理（视觉，音频和电气）和化学技术的组合进行了测量。已经开发了将界面面积与物理性质和操作变量相关联的模型，并尝试将这些值外推到高温液态金属系统。验证这些模型的唯一尝试是使用低温液态金属（例如汞或伍德的金属），或使用工厂数据。

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