Kilneye plastic refractory

A plastic and kiln mouth technology, applied in the field of kiln mouth plastics, can solve the problems of shortened life of kiln mouth refractories, poor thermal shock stability, poor anti-peeling performance, etc., to improve high temperature bending resistance and sintering. Performance, excellent acid and alkali corrosion resistance, enhanced effect of alkali corrosion resistance

Active Publication Date: 2013-01-02
南京联合荣大工程材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material has poor thermal shock stability and poor spalling resistance. It is easy to cause structural damage when used in the alkaline a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The kiln mouth can be plasticized including sillimanite, andalusite, silicon carbide, pure calcium aluminate cement, boron carbide, nano silicon dioxide, active silicon micropowder, and alumina micropowder. The plastic at the kiln mouth also includes metal aluminum powder, explosion-proof fiber, P530 high-efficiency water reducer, and plasticizer. Among them, sillimanite, andalusite, silicon carbide, P530, pure calcium aluminate cement, active silicon micropowder, alumina micropowder and nano silicon dioxide are the main raw materials in the plastic. The weight percentages of each component of the main raw materials in the total weight of the main raw materials are 50-60 sillimanite, 10-25 andalusite, 1-15 silicon carbide, 1-5 silicon micropowder, 3-8 pure calcium aluminate cement, and alumina Micro powder 2-6, nano silicon dioxide 0-1, boron carbide 0-2. Metal aluminum powder, P530 high-efficiency water reducer, and explosion-proof fiber account for the ...

Embodiment 2

[0022] Embodiment 2: The difference from Example 1 is that the weight percentages of each component of the main raw material to the total weight of the main raw material are sillimanite 58, andalusite 24, silicon carbide 4, silicon micropowder 3, pure calcium aluminate Cement 6, alumina micropowder 3, nano silicon dioxide 1, boron carbide 1.

[0023] This product is made of high-quality sillimanite, andalusite and various admixtures and other raw materials, and is adjusted after many experiments and feedback from the manufacturer. By adjusting particle gradation, selecting various admixtures, micropowder and nanotechnology, the traditional plastic construction method is changed, and the vibration construction method is used to immediately punch holes after forming to speed up the discharge of water, thereby avoiding explosions during the kiln process. The expected life of this product is more than one year, which is more than twice the life of the current kiln mouth material. ...

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PUM

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Abstract

The invention discloses special kilneye plastic refractory for cement kilneye, which comprises sillimanite, andalusite, silicon carbide, pure calcium aluminate cement, boron carbide, nanosilicon dioxide, active micro silicon powder and alumina micro powder. The kilneye plastic refractory further comprises aluminum powder, explosion-proof fiber, P530 high efficiency water reducing agent and plasticizing agent. The kilneye plastic refractory selects the raw materials of high-grade sillimanite, andalusite, various additives and the like and is prepared through adjustment based on various experiments and the feedback of factories. As the temperature of mullite converted by sillimanite and andalusite at high temperature is different, densities of substance before and after conversion are different, the volume is changed, and the structure of the mullite formed by sillimanite and andalusite has good high temperature volume stability.

Description

technical field [0001] The invention relates to a plastic kiln mouth. The utility model belongs to the technical field of plastics for upper kiln mouths of dry-process cement production lines. Background technique [0002] The service life of the refractories at the kiln mouth of the rotary kiln in the dry process cement production line directly determines the operating rate of the entire kiln system. At present, the kiln mouth refractories produced in China are generally corundum mullite castables. This material has poor thermal shock stability and poor spalling resistance. It is easy to cause structural damage when used in an alkaline atmosphere of a cement kiln, which greatly shortens the life of the refractory material at the kiln mouth and reduces the operating rate of the kiln. Contents of the invention [0003] In order to overcome the shortcomings of the existing technology, the invention provides a plastic kiln mouth. [0004] The technical problem to be solved...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 陈建军印杰经德义
Owner 南京联合荣大工程材料有限责任公司
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