Kilnfor producing steam by after heat from baking red brick or lime

The utility model discloses a kiln for producing steam by using waste heat from baking red bricks or lime, which comprises a kiln body which at least comprises a hearth. An annular cylindrical water tank is arranged at the periphery of the hearth; the outside of the water tank is provided with a heat-insulating layer which is filled with heat-insulating material; the lower part of the water tank is communicated with a water inlet pipe, and the upper part is communicated with a steam outlet pipe. Compared with traditional kilns, the utility model not only has the whole functions of the traditional kilns, but also obtains a great amount of steam energy resource under the condition of not increasing fuel and labor cost; moreover, the utility model plays the positive role of temperature reduction of the bottom part of the hearth and temperature increase of the top part of the hearth in the whole process of kilning; the yield of the red bricks or lime increases by more than 5%.