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首页> 美国政府科技报告 >Coal combustion under conditions of blast furnace injection. Final technical report, September 1, 1993--August 31, 1994
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Coal combustion under conditions of blast furnace injection. Final technical report, September 1, 1993--August 31, 1994

机译：高炉喷吹条件下的煤燃烧。最终技术报告，1993年9月1日 - 1994年8月31日

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A potentially new use for Illinois coal is its use as a fuel injected into a blast furnace to produce molten iron as the first step in steel production. Because of its increasing cost and decreasing availability, metallurgical coke is now being replaced by coal injected at the tuyere area of the furnace where the blast air enters. The purpose of this study is to evaluate the combustion of coal during the blast furnace injection process and to delineate the optimum properties of the feed coal. This investigation is significant to the use of Illinois coal in that the limited research to date suggests that coals of low fluidity and moderate to high sulfur and chlorine contents are suitable feedstocks for blast furnace injection. This report is on the results of work done during 1993-94 period which is the second year of a three year project. It was intended to complete the study already underway with the Armco Inc. Steel Company and to initiate a new cooperative study along somewhat similar lines with the Inland Steel Company. The results of this study will lead to the development of a testing and evaluation protocol that will give a unique and much needed understanding of the behavior of coal in the injection process and prove the potential of Illinois coals for such use. During this phase of the project, samples of coal and coke were obtained from both Inland Steel Corporation and Armco Steel. Two other important results were also obtained during this period. One is that work at the Amanda furnace of Armco showed that the amount of injected coal could be doubled from normal levels without any resulting problems due to increased sulfur abundance. The second result of interest is that during this period a coal injection system was started up at Inland Steel using an Illinois Basin coal from Indiana. The successful operation of this system demonstrated that Illinois Basin coal can be used for blast furnace injection.

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