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首页> 外文会议>McMaster symposium on iron and steelmaking;Symposium on the challenges of coal injection in today's blast furnaces; 20080923-25;20080923-25; Hamilton(CA);Hamilton(CA) >QUALITY CRITERIA FOR BLAST-FURNACE INJECTION COALS
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QUALITY CRITERIA FOR BLAST-FURNACE INJECTION COALS

机译：高炉喷煤的质量标准

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摘要

The selection of an injection coal depends largely on its cost, its physical and chemical properties, and on the intended application. For low injection levels, virtually any type of coal can be used, and its performance can be predicted with relative ease from a small subset of simple coal quality parameters. However, as injection rates increase, more complex characteristics such as combustibility, char reactivity and flow characteristics influence the selection and use of a coal or coal blend. In general, low-volatile, higher rank bituminous coals offer higher coke replacement ratios, but can be more difficult to convey and burn. Conversely, high-volatile, lower rank coals are generally more reactive and easier to convey, but carry lower coke replacement ratios and may in some instances contribute to furnace instability. Experience with various types of injection coal and existing and emerging standards for selecting injection coals are reviewed and discussed.
机译：注入煤的选择在很大程度上取决于其成本，其物理和化学性质以及预期的应用。对于低喷射量，实际上可以使用任何类型的煤，并且可以从一小部分简单的煤质参数中相对容易地预测其性能。然而，随着注入速率的增加，更复杂的特性（例如可燃性，炭反应性和流动特性）会影响煤或煤混合物的选择和使用。通常，低挥发性，更高等级的烟煤可提供更高的焦炭置换率，但可能更难以运输和燃烧。相反，高挥发性，较低等级的煤通常更具反应性，更易于输送，但焦炭置换率较低，在某些情况下可能导致炉子不稳定。审查和讨论了各种类型的喷煤的经验以及选择喷煤的现有标准和新兴标准。

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