The invention discloses an
alumina carrier and ball-rolling molding method and an application thereof. The method comprises the following steps: 1) an
alcohol polymer and
sesbania gum are contacted in an aqueous
solvent to obtain a spray glue, wherein a number-average molecular weight of the
alcohol polymer is 1500-2000; an acid source and
methyl cellulose are contacted in the aqueous
solvent to obtain a kneading glue; 2) an
alumina source and the kneading glue are homogenized to obtain the homogenized
powder; 3) the partially homogenized
powder is subjected to first ball-rolling molding to prepare a female ball, the residual homogenized
powder is added for second ball-rolling molding to mold the female ball and grow up the female ball. The method has the advantages of simple process, no
pollution, no massive industrial dust generation, strong operation
controllability, and strong
repeatability; a prepared catalyst or a carrier has the advantages of
high intensity, flexible ratio regulation and control, good
wear resistance, ideal wearing index, concentrated and uniform particle size, and
smooth surface; and the method is suitable for producing small microspheres with sizes of 0.5 millimeters, 1.0
millimeter, 1.5 millimeters and 2.0 millimeters.