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Magnesium-aluminum refractory material

A refractory material and aluminum technology, applied in the field of refractory materials, can solve the problems of poor spalling resistance, corrosion resistance, and low service life, and achieve the effects of good thermal shock stability, strong resistance, and obvious economic benefits

Inactive Publication Date: 2014-12-10
QINGDAO YONGTONG ELEVATOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, traditional sintered clay bricks and third-grade high-alumina bricks were used. This refractory material showed poor spalling resistance and erosion resistance during use, and its service life was low, with an average of only 10 times. The processing can only reach about 20 times

Method used

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Embodiment Construction

[0006] The present invention will be further explained below in conjunction with examples:

[0007] A magnesia-aluminum refractory material, characterized in that: its mineral composition is periclase (M), magnesia spinel (MA), forsterite (M) 2 S), forsterite (CMS), magnesium ferrite (MF), the weight percentages of each component are periclase (M) 60-70%, magnesia alumina spinel (MA) 30-40%, magnesium Olivine (M 2 S), forsterite (CMS), magnesium ferrite (MF) (total) 0.5-2%; the periclase (M) is the main crystalline phase, and the magnesia spinel (MA), magnesium Olivine (M 2 S), forsterite (CMS), and magnesium ferrite (MF) are the matrix, and the magnesia alumina spinel (MA) is the main binding phase in the matrix.

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Abstract

The invention relates to a refractory material, and particularly relates to a magnesium-aluminum refractory material. The magnesium-aluminum refractory material comprises the following mineral constituents: periclase (M), magnesium-alumina spinel (MA), forsterite (M2S), calcium-magnesium monticellite (CMS), and magnesium ferrite (MF). The magnesium-alumina spinel (MA) is high in melting point, small in thermal expansion, low in thermal stress, and good in thermal shock stability, has stable chemical property and strong resistance to basic slag, is a core for using magnesium-aluminum non-burning bricks, and is one of key materials for prolonging the service life. Therefore, the magnesium-aluminum refractory material has no seam melting loss and has better anti-slagging capacity and thermal shock resistance, the structure peeling phenomenon caused by the penetration of molten steel and slag can be overcome, and the service life is obviously prolonged; and as the product is non-burning or burnt at low temperature, energy resources can be saved, the cost can be lowered, the economic benefits are obvious, and thus the magnesium-aluminum refractory material is a high-quality refractory material.

Description

Technical field [0001] The invention relates to a refractory material, especially a magnesium-aluminum refractory material. Background technique [0002] Ladle is an indispensable important equipment in the steelmaking industry. As the refractory material for the lining of the ladle, several major changes have taken place. In the past, traditional sintered clay bricks and third-class alumina bricks were used. This refractory showed poor resistance to spalling and corrosion during use, and had a low service life, with an average of only 10 times. The treatment can only reach about 20 times. With the development of steelmaking technology, the requirements for refractory materials for ladle lining in the external refining of molten steel have increased. Magnesium-aluminum refractory bricks have begun to be applied with their excellent properties and have been continuously improved in use to make their performance better. People's attention. Summary of the invention [0003] The pr...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 丁兆年杨光
Owner QINGDAO YONGTONG ELEVATOR ENG
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