An object of the present invention is to provide an efficient determination method of the amount of ashless coal during blast furnace coke production and a method of producing blast furnace coke using this crystallization method. The present invention relates to a method for determining the amount of ashless coal in the production of a blast furnace coke comprising an ashless coal and a raw coal obtained by a solvent extraction treatment of coal, wherein the porosity index Pv [vol%] of the raw coal, The amount of the ashless coal to be blended is determined by the reference value W [mass%] calculated by the following equation (1) using the index D [volume%] and the true specific gravity Of the ashless coal. The amount of the above-mentioned ashless coal to be blended is preferably 0.29 W [mass%] or more and 1.00 W [mass%] or less. EMI ID = 1.0
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机译：本发明的一个目的是提供一种高炉焦炭生产过程中无灰煤量的有效测定方法，以及一种利用这种结晶方法生产高炉焦炭的方法。本发明涉及一种用于确定高炉焦炭生产中的无灰煤量的方法，该高炉焦炭包含无灰煤和通过煤的溶剂萃取处理而获得的原煤，其中孔隙率Pv [vol％]为原料煤的配合量是由下式（1）使用指数D [体积％]和无灰煤的真比重，通过基准值W [质量％]求出的。上述要混合的无灰煤的量优选为0.29W [质量％]以上且1.00W [质量％]以下。EMI ID = 1.0>
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