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Cement rotary kiln mouth refractory construction method

A cement rotary kiln and construction method technology, applied in the field of refractory materials, can solve problems such as bursting and castable damage, and achieve the effects of avoiding bursting, large construction space, and improving compactness and erosion resistance

Active Publication Date: 2017-04-26
TONGDA REFRACTORY TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a construction method for the pouring material at the kiln mouth of a cement rotary kiln, which solves the problem that the castable at the kiln mouth is damaged due to cracks during use due to unreasonable expansion joints.
Solve the problem of the bursting of the castable during the ignition and temperature rise of the rotary kiln by reserving vent holes

Method used

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  • Cement rotary kiln mouth refractory construction method
  • Cement rotary kiln mouth refractory construction method
  • Cement rotary kiln mouth refractory construction method

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with embodiment and accompanying drawing, cement rotary kiln kiln mouth back iron quantity 54, each mold comprises 3 back irons.

[0035] The cement rotary kiln pouring material construction method of the present invention comprises the following steps:

[0036] 1. Anchor welding

[0037] 1) For anchor arrangement, see figure 1 , the anchor piece does not cross the kiln back guard iron gap and its extension line;

[0038] 2) Check the shell of the rotary kiln, and remove the oxide layer on the surface of the shell of the cement rotary kiln, so as to avoid the failure of the anchor due to desoldering due to weak welding of the anchor;

[0039] 3) The spacing between anchors is 150mm;

[0040] 4) The head of the anchor is wrapped with a plastic tape with a thickness of 2mm;

[0041] 5) A302 welding rods should be used for the welding of anchors, and the full welding method should be used for welding....

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Abstract

The invention discloses a cement rotary kiln mouth refractory construction method, and belongs to the technical field of refractory materials. Firstly, an anchoring part is welded; then, a side surface template is mounted and constructed, and a refractory is provided; then, the refractory is cast in a mold in the six o'clock direction, and an exhaust hole is formed in the refractory; finally, a brick kiln performs baking, and the side surface template is dismounted; and the steps from casting of the refractory to dismounting of the side surface template are repeated until the whole circle of a kiln mouth is constructed. The cement rotary kiln mouth refractory construction method has the advantages of reducing the low water adding quantity of the refractory in the kiln mouth, improving the compactness and the erosion resistance of the refractory and reducing the damage risk of the refractory.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a method for constructing castables for cement rotary kilns. In particular, it relates to a construction method in which only side forms are supported, and a cover plate is not used to vertically construct kiln mouth castables downward in the Y-axis direction. Background technique [0002] The kiln mouth castable of cement rotary kiln is more easily damaged than other parts of the cement kiln, and its service life greatly affects the operation rate of the cement kiln. The working environment of the castables at the kiln mouth is very harsh. The castables are not only subjected to the abrasion during the high-temperature clinker feeding process and the mechanical stress during the cylinder rotation, but also need to withstand the erosion of alkali steam and thermal shock caused by temperature changes. The construction quality of kiln mouth castables and t...

Claims

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Application Information

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IPC IPC(8): F27D1/16
CPCF27D1/1626
Inventor 苏玉柱张海波张康康郝瑞王峰裕丛江波高长贺
Owner TONGDA REFRACTORY TECH CO LTD
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