This paper shows recent technological progress of blast furnace on concentrate, pulverized coal injection etc.

论述了当前中国高炉炼铁在精料、喷煤等方面的技术进步；

youdao

The utility model relates to a coal injection device belonging to accessory devices of blast furnace ironmaking.

本实用新型属于高炉炼铁附属装置。

youdao

With the price growth of coal, it is necessary to recalculate the economic efficiency of oxygen-riched coal injection.

随着煤炭价格上涨，富氧多喷煤的经济效益要重新计算。

youdao

It must either be mined from the surface like coal (to which it is just as similar as it is to oil) or through expensive steam injection with or without the injection of petroleum distillates.

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