Kiln body of cement shaft kiln

Abstract

The invention discloses a kiln body of a cement shaft kiln. The kiln body comprises a vertical tube part and a flare opening part, and comprises a high-temperature layer, a castable layer and a thermal insulating layer sequentially from inside to outside, wherein the high-temperature layer of the vertical tube part is enclosed by laying high-aluminum bricks; the high-temperature layer of the flare opening part is enclosed by laying siliceous mullite bricks; and the waist part of the vertical tube part is provided with a through air duct. By the technical scheme, the flare opening part adopts a composite lining structure comprising the siliceous mullite bricks and clay bricks, wherein the siliceous mullite bricks have erosion resistance and abrasion resistance, and the clay bricks decrease the construction cost of a lining; and a calcium silicate plate and thermal insulating bricks of the thermal insulating layer well realize heat preservation and energy saving functions. The air duct on the waist part can effectively eliminate the deflected burning of the shaft kiln, improve ventilation uniformity and middle wind in the kiln, improve the machine-hour output of the shaft kiln and strengthen the compressive strength of clinkers.

Description

technical field [0001] The invention relates to a cement shaft kiln body. Background technique [0002] The kiln body of the cement shaft kiln is composed of the lower straight part and the upper part of the bell mouth. Among them, the bell mouth is the main part of the firing reaction of the cement kiln material. Under the firing temperature, the cement kiln material and the refractory material at the bell mouth react strongly, causing the refractory material to erode and shorten the service life of the refractory material. On the other hand, part of the kiln material sticks to the surface of the bell mouth, forming a sticky edge, which prevents the smooth downward movement of the kiln material and becomes an obstacle that interferes with the production of the shaft kiln. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cement shaft kiln body with excellent properties such as corrosion resistance, wear resist...

AI Technical Summary

Problems solved by technology

Under the firing temperature, the cement kiln material and the refractory material at the bell mouth react strongly, causing the refractory material to erode and shorten the service life of the refractory material

On the other hand, part of the kiln material sticks to the surface of the bell mouth, forming a sticky edge, which hinders the smooth downward movement of the kiln material and becomes an obstacle that interferes with the production of the vertical kiln.

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