Drier-mixing apparatus

Claim 2

A drier-mixing apparatus, comprising a drum rotatably mounted on a frame having an inlet at one of its ends and an outlet at its opposite end, means for rotating said drum, a plurality of vanes mounted in said drum for mixing the materials passing through said drum, air collecting means at the top of the drum at the inlet and outlet ends thereof, a burner at each of said inlet and outlet ends for blowing flames into said drum from the opposite ends thereof, and exhaust means connected to said air collecting means for pulling air and dust particles through said air collecting means from said drum.

Claim 3

A drier-mixing apparatus as set forth in claim 1 in which said vanes comprise first and second sets of circumferentially spaced axially extending vanes disposed on opposite sides of the center of the drum, and a third set of circumferentially spaced axially extending vanes at the center of said drum, said third set of vanes being circumferentially offset with respect to said first and second sets of vanes with the ends of the vanes in said third set extending between the ends of adjacent pairs of vanes in said first and second sets.

Claim 4

A drier-mixing apparatus as set forth in claim 2 with the addition that a plurality of pusher vanes are mounted in said drum between said first set of vanes and the drum inlet end, said pusher blades being angularly offset with respect to the axis of said drum.

Claim 5

A drier-mixing apparatus as set forth in claim 1 with the addition that an apertured disk is mounted in said drum and extends thereacross adjacent the center of said drum.

Claim 6

A drier-mixing apparatus, comprising a drum rotatably mounted on a frame, a pair of end plates mounted on said frame at the opposed ends of said drum for closing said drum ends, means for rotating said drum, a plurality of vanes mounted in said drum for mixing the materials passing therethrough, an inlet chute mounted on one of said end plates, a discharge opening formed in the other of said end plates, a pair of air ducts mounted on said end plates in open communication with said drum, an exhaust fan interconnected to said air ducts for evacuating gaseous materials from said drum, means interconnected to said ducts and exhaust fan for collecting solid particles suspended in said gaseous materials, a pair of burners mounted on said frame at the opposed ends of said drum, each of said burners being provided with a nozzle disposed in alignment with an opening in one of the end plates for blowing the flame from the burners into the drum, and a pipe carried in one of said end plates and connected to a source of binder material for injecting a binder into said drum.

Claim 7

A drier-mixing apparatus, comprising a drum rotatably mounted on a frame, a pair of end plates mounted on said frame at the opposed ends of said drum for closing said drum ends, means for rotating said drum, a plurality of vanes mounted in said drum for mixing the materials passing therethrough, an inlet chute mounted on one of said end plates, a discharge opening formed in the other of said end plates, a pair of air ducts mounted on said end plates in open communication with said drum, an exhaust fan interconnected to said air ducts for evacuating gaseous materials from said drum, means interconnected to said ducts and exhaust fan for collecting solid particles suspended in said gaseous materials, a pair of burners mounted on said frame at the opposed ends of said drum, each of said burners being provided with a nozzle disposed in alignment with an opening in one of the end plates for blowing the flame from the burners into the drum, and a pipe carried in one of said end plates and connected to a source of binder material for injecting a binder into said drum.

Claim 8

A drier-mixing apparatus as set forth in claim 5 with the addition that each of said air ducts has a damper mounted thereon.