A cement rotary kiln whose lining can be replaced from the outside of the kiln

Abstract

The invention provides a rotary cement kiln with a lining capable of being replaced outside. The rotary cement kiln comprises a rotary cement kiln body (1) and is characterized in that at least one set of long strip holes (2) are formed in the kiln body (1), a set of lining bricks (3) corresponding to the long strip holes in a matched mode are arranged, bolts (3a) are arranged on the lining bricks (3), each bolt (3a) is provided with a buckle plate (3b) matched with the kiln body, a set of long strip plug bricks (4) capable of penetrating through the long strip holes are arranged, and the long strip plug bricks (4) and the lining bricks (3) are distributed inside the kiln body at intervals. According to the rotary cement kiln with the lining capable of being replaced outside, the kiln body is simple in structure, the lining bricks are convenient to replace, the purpose of rapidly replacing the lining bricks on the condition of not affecting the kiln strength is achieved, the rotary kiln cold repair time is shortened, the equipment utilization rate is improved, the yield is increased, and the production cost is lowered.

Description

Technical field: [0001] The invention relates to a cement rotary kiln, in particular to a cement rotary kiln whose lining can be replaced from the outside of the kiln. Background technique: [0002] The rotary kiln is the key equipment for cement production. It is used for the clinker calcination of the new dry process. It is a long cylinder with a steel cylinder and a cylinder wall lined with refractory bricks. , rotating operation, adding raw materials from one end of the bottom of the cylinder, exporting clinker from the other end of the bottom of the cylinder, calcining raw materials at the rear part of the cylinder, the flame floats from the clinker outlet end to the raw material feeding end, the rotary kiln cylinder is very long, in the rotary kiln The temperature in the rear section of the cylinder is high, and the refractory bricks wear quickly, while the temperature in the front section is low, and the refractory bricks wear slowly. Therefore, cold repairs must be c...

AI Technical Summary

Problems solved by technology

[0003] During cold repair, it is necessary to stop production, cool down the fan, manually enter the cylinder to remove the lining refractory bricks, manually build new lining refractory bricks, bake and heat up, and restore the supply of materials. It takes 10 to 20 days, and the replacement cycle is long, reducing the equipment utilization

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