deashing of coal 煤脱灰
As a new development of mild coal cleaning, the desulfurization and deashing of coal by electrochemical oxidation of coal water slurry has received an increasing great interest abroad.
作为一种煤的温和化化学净化，煤的电化学法脱灰脱硫近期在国外引起广泛关注。
The results showed that HF acid has remarkable deashing capacity for coal and graphite with high Si and low Ca content.
结果表明，HF酸对高硅低钙含量的煤和石墨有显著的脱灰效果；
Ash component analysis before and after deashing of Datong coal indicated that a linear relationship exists between ash content in deashed coal and total contents of Si and Fe in the ash.
对大同烟煤脱灰前后的灰组成分析表明，高精煤中的灰分含量与其所含的硅、铁组分的质量之和呈线性关系。
应用推荐