Structure of blast furnace hearth

The utility model discloses a structure of a blast furnace hearth, which includes a first hearth body, wherein the top of the first hearth body extends upward to form a second hearth body, and the second hearth body is communicated with the first hearth body. The height of the second hearth body is 3-4 m. The structure of the blast furnace hearth has the benefits as follows: according to the design of the blast furnace hearth, the blast furnace hearth is 3-4 m higher than a common fluidized bed hearth, the smoke residence time can be prolonged, and the smock can stay in the hearth for 3 s, so that material can be fully burnt in the hearth and the safety disposal is thoroughly performed.