Curing agent and method for reducing leaching toxicity of manganese element in cement

The invention relates to a curing agent and a method for reducing leaching toxicity of a manganese element in cement. The method is characterized in that the leaching toxicity of the manganese element in the cement is reduced by adding the curing agent in clinker calcination and cement grinding processes; the curing agent I added in the clinker calcining process is mainly composed of flue gas desulfurization gypsum and NaF, the mass ratio of the flue gas desulfurization gypsum to the NaF is (96-98): (2-4), and the SO3 content of the flue gas desulfurization gypsum is controlled to be 40%-45%; the curing agent II added in the cement grinding process is mainly composed of zeolite and metakaolin, the zeolite accounts for 65%-67% by mass, and the metakaolin accounts for 33%-35% by mass. According to the invention, effective utilization of solid wastes with relatively high heavy metal content is realized, the leaching toxicity of the heavy metal manganese element in the cement product is reduced, and the reduction