The invention relates to a
solid desulfurizer and a production method thereof, in particular to a composite
calcium-based
solid desulfurizer which is prepared from
industrial waste residues and the production method thereof. The desulfurizer is prepared by the following steps of: directly mixing
carbide slag slurry, dicyandiamide
slag serving as a modifier, a chemical
drying agent and
magnesium slag powder which serves as another modifier; stirring and mixing; performing
wet milling to prepare
slurry; performing dry milling to prepare
powder; and sieving. The prepared composite
calcium-based
solid desulfurizer is mainly compounded by
calcium hydroxide or
calcium hydroxide and
calcium carbonate, wherein the desulfurizer contains an active
magnesium oxide component, integrates the characteristics of a single calcium base or a
magnesium-based desulfurizer and has composite effects. Moreover, the desulfurizer has the characteristics of saving a large amount of energy, protecting environment and reducing the cost of a
flue gas desulfurizer, along with cheap and wide
raw material resource, large amount of doped magnesium slag,
carbide slag and dicyandiamide slag, no heat source, high
dehydration speed, stable
physical performance and the like; in addition, the desulfurizer has the advantages of small equipment investment, low operation cost, capability of eliminating the damage of limestone exploitation to the environment and the like.