Special composite firebrick for rotary kiln and preparation method thereof

A refractory brick and rotary kiln technology, applied in the field of refractory materials, can solve the problems that affect the economic benefits of enterprises, complex masonry process, poor refractory and thermal insulation performance, etc.

Inactive Publication Date: 2012-11-21
厚波
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the lining brick of the rotary kiln is divided into a refractory layer and an insulating layer; the existing technical defects are: the masonry process is complex, the refractory layer and the insulating layer are easy to separate during use, the refractory and insulating properties are poor, and the service life is short , the actual service life is 8-10 months
It leads to long maintenance time and high production cost, which obviously affects the economic benefits of the enterprise

Method used

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  • Special composite firebrick for rotary kiln and preparation method thereof
  • Special composite firebrick for rotary kiln and preparation method thereof
  • Special composite firebrick for rotary kiln and preparation method thereof

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specific Embodiment

[0016] As shown in the figure, the composite refractory bricks of the present invention are divided into ordinary refractory bricks and special refractory bricks with the same appearance and specifications. Both ordinary refractory bricks and special refractory bricks are composed of a working layer 1 and a heat insulation layer 2

[0017] It is characterized in that an interface agent and an adhesive are combined between the working layer 1 and the heat insulating layer 2;

[0018] The interface agent is made of fluorite powder, floating beads, sub-white corundum hollow spheres, mullite hollow spheres, spherical clay powder, and silica fume in proportion, and is made into a slurry with an inorganic binder; the purpose is to prevent the work The heat conduction and consumption of the calcined materials in the layer masonry surface combine the working layer 1 and the heat insulation layer 2 into an integral structure;

[0019] The binder refers to an inorganic binder, such as o...

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Abstract

The invention relates to a special composite firebrick for a rotary kiln and a preparation method thereof. The special composite firebricks are divided in to common firebricks and special firebricks which are in the same appearance and size, both the common firebrick and the special firebrick consist of working layers (1) and thermal insulation layers (2), and adhesion agents and binding agents are combined between the working layers (1) and thermal insulation layers (2); the adhesion agents are prepared by mixing fluorite powders, hollow microspheres, sub-white fused alumina hollow spheres, mullite hollow spheres, sphere clay powders and silica fumes according to certain proportions to form slurry by utilizing inorganic bonds; the binding agents are inorganic bonds, such as one or mixture of phenolic resin glue, polyvinyl acetate resin glue and urea resin. The special composite firebrick for the rotary kiln can be used for building the inside liner of a rotary kiln calcined by cement, fireproof material, fracturing propping agent for petroleum well, lime and the like, and has the functions of strip resistance, thermal shock resistance, high refractoriness under load and wear resistance.

Description

technical field [0001] The invention relates to a composite refractory brick used for building the inner lining of a calcined rotary kiln, which belongs to the field of refractory materials and can be used for the inner lining of calcined rotary kilns such as cement, refractory materials, fracturing proppant for oil wells, and lime. The lining has the functions of anti-stripping, anti-thermal shock, high-load softness and wear resistance. Background technique [0002] The working area of ​​the rotary kiln can be divided into three sections, namely drying and preheating section, calcining section and cooling section. For example: cement, refractory materials, fracturing proppant for oil wells, lime and other calcined rotary kilns. The role of the lining brick of the rotary kiln is to ensure that the temperature of the three working areas in the furnace has stable and reliable physical properties within the range of process requirements; for example, anti-stripping, thermal s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/28F27D1/04C04B35/66
Inventor 刘伟厚波慕青梅
Owner 厚波
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