A dedusting apparatus for cleaning contaminants from particulate material, comprising: a housing defining a cleaning area for removing contaminants from particulate material to create cleaned particulate material and a product discharge opening through which cleaned particulate material can be discharged from said housing; an infeed apparatus located at an upper portion of said housing to receive a supply of particulate material, said infeed apparatus including attachment flange having an infeed opening therein for the passage of particulate material to be cleaned of contaminants, a Venturi chamber positioned to receive particulate material passing through said infeed opening and to remove contaminants from the particulate material by a flow of air passing upwardly through the product discharge opening and into the Venturi chamber, while cleaned particulate material falls through the product discharge opening; and a discharge conduit positioned above the Venturi chamber to receive dust and debris laden air moving upwardly from said Venturi chamber, said discharge conduit moving said dust and debris laden air remotely from said cleaning area, characterized in that said infeed apparatus further including a vibratory feed pan urging said particulate material to an outlet opening in said vibratory feed pan and into said cleaning area; a vibration generator operably connected to said vibratory feed pan to induce vibrations therein, the rate of flow of particulate material into said cleaning area being dependent upon the magnitude of the vibrations of the feed pan induced by the vibration generator; a connector port is provided for dividing air from a compressed air supply connectible to the apparatus into two flows, a first flow serving to cause the upward air flow into the Venturi chamber and a second flow serving to power the vibration generator to determine the rate of flow of particulate material into the cleaning area. a housing defining a cleaning area for removing contaminants from particulate material to create cleaned particulate material and a product discharge opening through which cleaned particulate material can be discharged from said housing; an infeed apparatus located at an upper portion of said housing to receive a supply of particulate material, said infeed apparatus including attachment flange having an infeed opening therein for the passage of particulate material to be cleaned of contaminants, a Venturi chamber positioned to receive particulate material passing through said infeed opening and to remove contaminants from the particulate material by a flow of air passing upwardly through the product discharge opening and into the Venturi chamber, while cleaned particulate material falls through the product discharge opening; and a discharge conduit positioned above the Venturi chamber to receive dust and debris laden air moving upwardly from said Venturi chamber, said discharge conduit moving said dust and debris laden air remotely from said cleaning area, characterized in that said infeed apparatus further including a vibratory feed pan urging said particulate material to an outlet opening in said vibratory feed pan and into said cleaning area; a vibration generator operably connected to said vibratory feed pan to induce vibrations therein, the rate of flow of particulate material into said cleaning area being dependent upon the magnitude of the vibrations of the feed pan induced by the vibration generator; a connector port is provided for dividing air from a compressed air supply connectible to the apparatus into two flows, a first flow serving to cause the upward air flow into the Venturi chamber and a second flow serving to power the vibration generator to determine the rate of flow of particulate material into the cleaning area.