喷吹低变质度、高活性组份含量的煤可以获得较高的燃烧率和较大的喷煤量。
Higher combustibility and coal injection rate can be acquired in BF by using the coal with lower metamorphic degree and higher content of active matter.
结果表明，混煤喷吹有利于提高煤粉的燃烧率，扩大高炉喷吹量和降低喷煤成本。
The test result show that mixed coal injection benefit to raising combustibility, increased quantity and decreased cost.
喷吹燃料中的碳在炉缸的燃烧率低。
Rate of burning of the carbon in injected fuel in the hearth is low;
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