Low ash coal is a precondition to develop a new area of coal utilization.

低灰煤是开发煤炭应用新领域的前提。

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Slush coal water mixture is a high ash coal water mixture, and be made on the CWS production technique.

煤泥水煤浆是一种高灰煤泥水煤浆，它是依托水煤浆技术而开发的一种新型燃料。

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The low ash coal dewatering process is especially suitable for preparing high grade active carbon with low ash coal.

本发明疏水团聚造粒助滤的低灰煤脱水方法，最适用于低灰煤制备高档活性炭。

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Multiple federal regulations are now in the pipeline and involve mercury, coal ash and greenhouse gases.

FORBES: Coal To Gas Moves Are Generating Economic Waves

Moreover, because coal ash is now recycled, it reduces the effects on climate change.

FORBES: Coal Ash Spilling Into Obama and Romney Race

The coal ash sector, however, says that no mater what, the industry will be tainted.

FORBES: Coal Ash Spilling Into Obama and Romney Race