Conveyor and conveyance method

Provided is a conveyor such that after stopping or restricting the supply of powder and granular material to a downstream device, it is possible to smoothly restart the normal conveying operation of the powder and granular material. This conveyor comprises: a casing which has a powder and granular material conveying path therein and also has a discharge port for discharging the powder and granular material to a downstream device; a plurality of conveying units, which are accommodated in the casing, that circulate along the conveying path, thereby conveying the powder and granular material to the discharge port; an opening and closing mechanism which opens and closes the discharge port; and a control unit which controls the operation of the plurality of conveying units and the opening and closing mechanism. When restricting the supply of the powder and granular material to the downstream device, the control unit controls the opening and closing mechanism to close the discharge port, and maintains the circulati