求翻译：煤粉的制备工艺是指通过磨煤机将原煤加工成粒度及水分含量均符合高炉喷煤要求的煤粉的工艺过程。它包括原煤卸车、贮存、干燥、制粉、粉煤贮存和输送到喷吹系统等工序。高炉喷吹系统对煤粉有如下要求：粒度74占80%以上，水分不大于1%。是什么意思？

The preparation process of pulverized coal particle size and moisture content of raw coal processed into coal mill will meet the requirements of the pulverized coal injection of pulverized coal process. It includes raw coal unloading, storage, drying, milling, coal storage and transportation to the

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The powdered coal preparation craft is refers through the pulverizer processes the raw coal the granularity and the moisture content tallies the blast furnace to spurt the coal request the powdered coal technological process.It unloads a vehicle, storing including the raw coal, dry, the system powde

Coal powder preparation by grinding raw coal into coal particle size and moisture content are in line with the process of BF pulverized coal requirements. It includes raw coal unloading, storage, drying, milling, storage and transportation of coal powder injection system processes. BF coal powder in

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