Patent ID: 8231007

Claim:
A method of reconstructing a static classifier cage wherein the method comprises the steps of: providing a static classifier cage having upper and lower axially spaced-apart and coaxial rigid ring structures wherein at least one of said rings has a plurality of notches extending at an angle relative to a radius of said cage to an outside edge thereof; fitting a plurality of hardened metal elongate, generally rectangular classifier vanes into and extending between said rings in a cylindrical pattern by receiving the ends of said vanes into said notches for retention purposes; removing an arcuate retainer which closes the outer ends of said notches; removing at least one of said vanes from their normal vertical orientation between said rings by substantially radially outward translation from said notches; performing at least one of inverting at least some of said removed vanes and restoring them in inverted orientation into contained relationship between said upper and lower ring structures or replacing said removed vanes with unworn vanes within said notches; and replacing said arcuate retainer to close the outer ends of said notches.