ABSTRACT

The hearth status varies accordingly with individual blast furnace (BF) conditions so that the variation of measured hearth refractory temperature is unique. Over the course of a long BF campaign (typically 15–20 years), refractory temperature in the same furnace can also present different trends. This is certainly the case for Whyalla’s No. 2 Blast Furnace (W2BF) as various significant operational events occurred during its 4th campaign starting from 2004. To understand hearth condition throughout the whole W2BF current campaign including refractory, coke bed and liquid flow behaviour, a methodology was proposed to help explain the refractory temperature measurement (trend) based on simplified and comprehensive fluid flow and heat transfer modelling, measured refractory temperatures and other relevant operational data. Results show that through a consistent assessment based on the various sources over the W2BF campaign, a reliable prediction can be made about the current W2BF hearth condition.

摘要

炉膛状态随个别高炉（BF）条件而变化，因此测量的炉膛耐火材料温度的变化是唯一的。在长时间的高炉运行过程中（通常为 15-20 年），同一炉中的耐火材料温度也会呈现不同的趋势。Whyalla 的 2 号高炉 (W2BF) 肯定就是这种情况，因为从 2004 年开始的第四次运行期间发生了各种重要的操作事件。要了解整个 W2BF 当前运行的炉膛状况，包括耐火材料、焦炭床和液体流动行为，提出了一种方法，以帮助解释基于简化和全面的流体流动和传热模型、测量的耐火材料温度和其他相关操作数据的耐火材料温度测量（趋势）。