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Corundum-magnesium aluminate spinel refractory material

A magnesia-aluminum spinel and refractory technology, applied in the field of refractory materials, can solve the problems of erosion of refractory materials, shortened service life of refractory materials, and shortened service life of refractory materials, and achieves low porosity, good thermal vibration stability, and improved resistance to The effect of thermal shock performance

Inactive Publication Date: 2014-12-17
QINGDAO YONGTONG ELEVATOR ENG
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Aluminum is a very active metal, and it is easy to combine with Fe in high alumina bauxite refractories. 2 o 3 , SiO 2 The reduction reaction of other impurity components will cause the corrosion of the refractory material by the aluminum liquid and reduce the life of the refractory material.
At the same time, the aluminum liquid has good wettability to the high-alumina bauxite refractory material. The aluminum liquid penetrates into the refractory material along the visible pores and then oxidizes and expands, resulting in micro-cracks inside the refractory material, forming a vicious circle and reducing the service life of the refractory material.

Method used

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Examples

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Embodiment Construction

[0006] Below in conjunction with example the present invention will be further described:

[0007] A corundum-magnesia-aluminum spinel refractory material, the raw materials of which include corundum, magnesia-alumina spinel, fused magnesia, α-Al 2 o 3 Micropowder, the mass percentage of each component is: corundum 55%, magnesium aluminum spinel 20%, fused magnesia 8%, α-Al 2 o 3 Micropowder 17%; the corundum is white corundum; the apparent porosity of the corundum-magnesium aluminum spinel refractory material is 20%, and the bulk density is 2.99g / cm 3 , The refractoriness is 2125°C.

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Abstract

The invention relates to a refractory material, and in particular relates to a corundum-magnesium aluminate spinel refractory material which is prepared from raw materials, including corundum, magnesium aluminate spinel, fused magnesite and alpha-Al2O3 micro powder. The corundum-magnesium aluminate spinel refractory material is relatively high in refractoriness and strength, good in anti-erosion property, anti-stripping property and anti-slag property, good in thermal vibration stability and long in service life, thereby being a corundum-magnesium aluminate spinel refractory material with excellent quality.

Description

technical field [0001] The invention relates to a refractory material, in particular to a corundum-magnesium aluminum spinel refractory material. Background technique [0002] Aluminum is a very active metal, and it is easy to combine with Fe in high alumina bauxite refractories. 2 o 3 , SiO 2 The reduction reaction of impurity components such as aluminum liquid will cause the erosion of refractory materials by aluminum liquid and reduce the life of refractory materials. At the same time, aluminum liquid has good wettability to high-alumina bauxite refractory materials. Aluminum liquid penetrates into the refractory material along the apparent pores and then oxidizes and expands, resulting in micro-cracks inside the refractory material, forming a vicious circle and reducing the life of the refractory material. With the development of the aluminum smelting industry, the requirements for the purity of molten aluminum and the life expectancy of refractory materials for alumi...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 吴联顺丁兆年
Owner QINGDAO YONGTONG ELEVATOR ENG
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