实践证明，这种技术可以明显提高块煤率，提高产量，增加施工的安全，具有较好的经济和社会效益。
Practice has proved that this kind of technology can obviously improve the lump coal rate, increase the security of constructing, have better economic and social benefits.
无烟块煤是重要的工业原料，无烟煤生产企业的效益主要体现在无烟块煤的产量和比例上。
Anthracite lump coal is an important chemical raw material. Economic profit to anthracite coal producers mainly relies on the production and proportion of anthracite lump coal.
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