The anode carbon block is generally a cuboid, and there are 2-4 circular grooves with a diameter of 160-180mm and a depth of 80-110mm on the surface of the conductive direction, commonly known as carbon bowls. The pre-baked anode carbon block is made of petroleum coke as the aggregate and coal tar pitch as the binder and is prepared by vibration molding and roasting heat treatment. It is used for aluminum electrolysis as an anode material.