СПОСОБ ХРАНЕНИЯ УГЛЯ ПОВЫШЕННОГО КАЧЕСТВА И УГОЛЬ С РЕГУЛИРУЕМЫМ РАЗМЕРОМ ЧАСТИЦ

摘要

The purpose of the present invention is to provide: a method for storing upgraded coal, which is economical and whereby it becomes possible to prevent the spontaneous ignition of piles; and grain-size-controlled coal which rarely undergoes spontaneous ignition during storage. The present invention is a method for storing upgraded coal, which involves a step of piling up granular coal containing upgraded coal, wherein the content of grains each having a grain size of 10 mm or less in the coal is 50 mass% or more. It is preferred that the content of grains each having a grain size of 1 mm or less is 25 mass% or more and the content of grains each having a grain size of 0.15 mm or less is 7 mass% or more in the coal.