The invention relates to a
casting material used for producing pellet
rotary kiln and a preparation method thereof, the
casting material is a combination, and contained components and weight percentage occupied in the combination contain: 70 to 92 percent of
casting material
basal body, 3 to 8 percent of micro
powder of monox or micro
powder of
alumina, 0.001 to 5 percent of
zirconium mullite or zirconite, 1 to 12 percent of carborundum, 0.005 to 5 percent
calcium aluminate cement and 0.01 to 1 percent of dispersant; the casting material
basal body is the combination of one or several of
corundum,
bauxite and porzite. The preparation method of the casting material has the following steps: first uniformly mixing the casting material
basal body, then adding other components to be uniformly mixed, and finishing goods. The casting material contains the carborundum, the carborundum has the characteristic of difficult infiltration with furnace burden containing iron, and ring formation materials are difficult to be
felted on a furnace
brick lining; in addition, the carborundum can increase acidic furnace burden anti-
corrosion performance of the casting material, and thus the life of the
rotary kiln is enhanced. The preparation method of the casting material is simple and has low cost.