Coal gangue was activated by calcination with calcium, while gypsum and fluorite as mineralized agent.
采用增钙煅烧方式活化煤矸石，添加石膏和萤石作矿化剂。
2
The effect of different calcination temperature and the maintaining time at a certain temperature on the compressive strength of flue gas desulphurization gypsum-fly ash composite were studied.