An air-powered conveyor belt cleaner is configured with a spinner manifold with cleaning heads having nozzles that output air against a conveyor belt and an opposing catch tray assembly that catches dislodged sesame seeds and small debris or particles from the cleaned conveyor belt. A hanging bracket attaches to opposing sides of the conveyor belt’s frame and uses rollers to direct the conveyor belt in a temporarily vertical direction while the air-powered conveyor belt cleaner operates. Once the conveyor belt is vertically-oriented, plant air is directed to inlets at the spinner manifold, which is then output through nozzles perpendicularly arranged relative to the conveyor belt. The cleaning heads are adapted to rotate while operating to increase the agitation against the conveyor belt. The tips of the nozzles/tubes are bent at an obtuse angle to create a thrust caused by the output air.