Rotary kiln liner structure and laying method

A rotary kiln and kiln lining technology, applied in the field of rotary kiln, can solve the problems of service life impact, low heat utilization rate of rotary kiln, high thermal conductivity of refractory bricks, etc., to reduce heat radiation loss, improve heat utilization efficiency, and service life Improved effect

Inactive Publication Date: 2017-04-26
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rotary kiln building method mostly uses refractory bricks for circular masonry or staggered masonry. There are many gaps between the masonry refractory bricks, and there is no other force between the bricks except for the friction between them. , so its integrity is poor
During the rotary use, the brick lining in the kiln is affected by temperature, thermal shock, friction, mechanical erosion and chemical erosion of gas and high-temperature materials in the kiln, and the gap between the bricks in the brick lining will gradually increase. The phenomenon of falling bricks and broken bricks will seriously affect the service life; at the same time, the thermal conductivity of refractory bricks is high, and the heat lost through the radiation heat dissipation of the kiln lining during the operation of the rotary kiln is relatively high, resulting in a low heat utilization rate of the rotary kiln

Method used

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  • Rotary kiln liner structure and laying method
  • Rotary kiln liner structure and laying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preform 1 and the castable 2 are prepared by conventional methods from the following raw materials in parts by weight:

[0030] 25 parts of high-alumina slag with a particle size of 0-2 mm, 20 parts of high-alumina slag with a particle size of 2-5 mm, 22 parts of high-alumina slag with a particle size of 5-10 mm, 20 parts of bauxite powder with a particle size of 200 mesh, and micronized silicon powder 3 parts of dust powder, 3 parts of high alumina cement with a particle size of 200 mesh, 5 parts of alumina micropowder with a particle size of 200 mesh, and 2 parts of sodium hexametaphosphate with a particle size of 1-3mm.

[0031] The raw material of this component can make the prefabricated part 1 and the casting material 2 have better performances of high temperature resistance and wear resistance.

Embodiment 2

[0033] The preform 1 and the castable 2 are prepared by conventional methods from the following raw materials in parts by weight:

[0034] 28 parts of high-alumina slag with a particle size of 0-2 mm, 18 parts of high-alumina slag with a particle size of 2-5 mm, 18 parts of high-alumina slag with a particle size of 5-10 mm, 22 parts of bauxite powder with a particle size of 200 mesh, and micronized silicon powder 2 parts of dust powder, 4 parts of high alumina cement with a particle size of 200 mesh, 6 parts of alumina micropowder with a particle size of 200 mesh, and 2 parts of sodium hexametaphosphate with a particle size of 1-3mm.

[0035] The raw material of this component can make the prefabricated part 1 and the casting material 2 have better performances of high temperature resistance and wear resistance.

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Abstract

The invention belongs to the technical field of rotary kilns, in particular to a rotary kiln liner structure and a laying method. The rotary kiln liner structure is characterized in that prefabricated members are laid on the inner wall of a kiln body of the rotary kiln in a spaced manner along the circumferential direction, casting materials are cast in gaps between the adjacent prefabricated members along the circumferential direction, fireclay insulating refractory materials are inserted into the prefabricated members, and anchoring pieces are arranged in the prefabricated members. With the adoption of the laying method that the prefabricated members with the anchoring pieces are vertically laid and act as a framework and the casting materials are cast in the gaps between two rows of prefabricated members, the integrity of a kiln liner of the rotary kiln is improved, and the improvement of service life of the rotary kiln is facilitated; a heat insulation layer is laid below a working liner of the rotary kiln, so that the insulation ability of the kiln liner of the rotary kiln is improved, heat radiation loss through heat radiation of the kiln liner of the rotary kiln is reduced, the heat utilization efficiency of the rotary kiln is improved, and energy consumption of the rotary kiln is reduced.

Description

technical field [0001] The invention belongs to the technical field of rotary kilns, and in particular relates to a rotary kiln lining structure and a masonry method. Background technique [0002] The rotary kiln building method mostly uses refractory bricks for circular masonry or staggered masonry. There are many gaps between the masonry refractory bricks, and there is no other force between the bricks except for the friction between them. , so its integrity is poor. During the rotary use, the brick lining in the kiln is affected by temperature, thermal shock, friction, mechanical erosion and chemical erosion of gas and high-temperature materials in the kiln, and the gap between the bricks in the brick lining will gradually increase. The phenomenon of falling bricks and broken bricks occurs, and the service life is seriously affected; at the same time, the thermal conductivity of refractory bricks is high, and the heat lost through the radiation heat dissipation of the ki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/10F27D1/16C04B35/66
CPCF27D1/10C04B35/62204C04B35/66C04B2235/3217C04B2235/3418C04B2235/5436F27D1/1621
Inventor 张昕陈涛毛朋黎光正卓胜
Owner PANZHIHUA GANGCHENG GROUP
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