The coal rate is being increased in recent years owing to the high economics of coal powder injection.
由于高炉喷煤有着显著的经济效益，故近年来煤比正在不断提高。
The invention also provides a preparation method of the composition for blast furnace coal powder injection.
本发明还提供了该高炉喷吹煤粉用组合物的制备方法。
Compound injection charged with magnesium oxide in coal powder was tested based on the current coal powder injection situation.
针对安钢高炉喷吹用煤现状，通过对煤粉添加氧化镁混合喷吹进行了试验。
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