Fastening device for carbon brick at bottom of blast furnace

The utility model discloses a fastening device for a carbon brick at the bottom of a blast furnace. The fastening device comprises a corner protecting plate which is connected with the carbon brick at the bottom of the blast furnace, wherein a reinforcing plate is vertically arranged on the top of the plane of the corner protecting plate; a fastening rod in parallel with the plane of the corner protecting plate is arranged on the reinforcing plate. With the adoption of the fastening device, a carbon brick body can be prevented from being damaged during being constructed, thus the requirements on tightness of mortar joints among the carbon bricks and saturability of carbon paste are met; the production cost is saved; efficient and safe production is ensured.