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首页> 外文会议>Lime: Building on the 100-year legacy of the ASTM Committee C07 >Measurement and Control Methodology for the Flowability of Lime Fines in Steel Injection Systems
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Measurement and Control Methodology for the Flowability of Lime Fines in Steel Injection Systems

机译：喷钢系统中石灰细粉流动性的测量和控制方法

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摘要

In recent years, injection technology in steel making has evolved from a means to inject oxygen and carbon into an electric arc furnace to a preferred technology for the introduction of calcium and dolomitic lime fines into the furnace. In optimizing this process, flowability is an important factor. Literature searches reveal that there are few useful methodologies for measuring the flowability characteristics of materials in the desired size range of 10 mm × 0 mm. Therefore, control standards need to be developed for measuring the desired quality of lime fines for injection systems. A methodology has been developed based on the key characteristics of "compressibility" and "cohesiveness," which can be used to evaluate lime suitability in injection systems. The traits that help define these characteristics are the loose and packed density and the angle of repose. The results of these measurements are used as criteria for setting the control limits for flow-ability. Adhering to these control limits has mitigated problems in the field encountered when injecting lime fines into steel furnaces. This article describes the methods developed and how control limits can be determined for approving lime fines for injection into steel furnaces.
机译：近年来，炼钢中的喷射技术已经从将氧气和碳喷射到电弧炉中的方式发展到了将钙和白云石细粉引入到炉中的优选技术。在优化此过程中，流动性是重要的因素。文献搜索表明，在所需的10 mm×0 mm尺寸范围内，很少有有用的方法来测量材料的流动性特征。因此，需要制定控制标准以测量用于注射系统的石灰细粉的所需质量。基于“可压缩性”和“内聚性”的关键特性，已经开发出一种方法，可用于评估石灰在注射系统中的适用性。有助于定义这些特征的特征是疏松和堆积的密度以及休止角。这些测量的结果用作设置流动性控制极限的标准。遵守这些控制限制已减轻了将石灰细粉注入钢炉的过程中遇到的问题。本文介绍了开发的方法以及如何确定批准注入钢炉的石灰细粉的控制极限。

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