This is inturn easily dissolved in a dilute solution of HCl, precipitating out H2SiO3 and leavingAlCl3 solution. Thus it is possible easily to separate the main components Al2O3 andSiO2 in the fly ash materials.

• 霞石溶于HCl溶液,会被分解生成AlCl_3溶液和偏硅酸胶体沉淀,从而使高铝粉煤灰中的主要组分SiO_2和Al_2O_3得以分离。