▎ 摘　　要

NOVELTY - Preparation of graphene-modified calcium carbonate denitration agent comprises putting coupling agent, graphene and calcium carbonate powder into ball mill, ball milling to obtain pre-modified calcium carbonate powder, adding attapulgite, ball milling to obtain semi-finished product, adding water, stirring, putting to a kneader, and kneading into the desired shape. USE - The method is for preparation of graphene-modified calcium carbonate denitration agent used for flue gas denitration (claimed). ADVANTAGE - The denitration agent can effectively resist the poisoning effect of sulfide and water on the denitration catalyst, and has good effect of adsorbing flue gas and high denitrification efficiency.