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Magnesium aluminate spinel refractory material and preparation method thereof

A magnesia-aluminum spinel and refractory technology, applied in the field of refractory materials, can solve the problems of low purity and poor quality of magnesia-aluminum spinel, and achieve the effects of small expansion rate, low porosity and good stability

Inactive Publication Date: 2021-11-02
郑泽平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium-aluminum spinel refractories have good corrosion resistance, abrasion resistance, and good thermal shock stability, but the produced magnesium-aluminum spinel is not high in purity and poor in quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] This embodiment 1 provides a magnesia-alumina-spinel refractory material, the magnesia-alumina-spinel refractory material is prepared from the following raw material formula in mass fractions: 5-15 parts of magnesium, 16-24 parts of aluminum, manganese 0.4-1.4 parts, 6-10 parts of titanium dioxide, 4-12 parts of diboron trioxide and 5-10 parts of binder, the magnesium is one of magnesium powder, fused magnesia and sintered magnesia, and the magnesium The mass fraction of magnesium in powder, fused magnesia and sintered magnesia is ≥98%, and the particle size of the magnesium powder or magnesia is less than 2mm.

[0027] The magnesia-aluminum spinel refractory material is prepared from the following raw material formula in mass fractions: 10 parts of magnesium, 20 parts of aluminum, 0.9 parts of manganese, 8 parts of titanium dioxide, 8 parts of diboron trioxide and 7.5 parts of binder.

[0028] The aluminum is aluminum powder, the mass fraction of the aluminum powder is...

Embodiment example 2

[0043] The second embodiment provides a magnesia-alumina-spinel refractory material, the magnesia-alumina-spinel refractory material is prepared from the following raw material formula in mass fractions: 5-15 parts of magnesium, 16-24 parts of aluminum, manganese 0.4-1.4 parts, 6-10 parts of titanium dioxide, 4-12 parts of diboron trioxide and 5-10 parts of binder, the magnesium is one of magnesium powder, fused magnesia and sintered magnesia, and the magnesium The mass fraction of magnesium in powder, fused magnesia and sintered magnesia is ≥98%, and the particle size of the magnesium powder or magnesia is less than 2mm.

[0044] The magnesium-aluminum spinel refractory material is prepared from the following raw material formula in mass fractions: 5 parts of magnesium, 16 parts of aluminum, 0.4 part of manganese, 6 parts of titanium dioxide, 4 parts of diboron trioxide and 5 parts of binder.

[0045] The aluminum is aluminum powder, the mass fraction of the aluminum powder i...

Embodiment example 3

[0060] The third embodiment provides a magnesia-alumina-spinel refractory material. The magnesia-alumina-spinel refractory material is prepared from the following raw material formula in mass fractions: 5-15 parts of magnesium, 16-24 parts of aluminum, manganese 0.4-1.4 parts, 6-10 parts of titanium dioxide, 4-12 parts of diboron trioxide and 5-10 parts of binder, the magnesium is one of magnesium powder, fused magnesia and sintered magnesia, and the magnesium The mass fraction of magnesium in powder, fused magnesia and sintered magnesia is ≥98%, and the particle size of the magnesium powder or magnesia is less than 2mm.

[0061] The magnesium-aluminum spinel refractory material is prepared from the following raw material formula in mass fractions: 15 parts of magnesium, 24 parts of aluminum, 1.4 parts of manganese, 10 parts of titanium dioxide, 12 parts of diboron trioxide and 10 parts of binder.

[0062] The aluminum is aluminum powder, the mass fraction of the aluminum powd...

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Abstract

The invention discloses a magnesium aluminate spinel refractory material and a preparation method thereof, and relates to the technical field of refractory materials, and the preparation method comprises the following steps: weighing raw materials according to formula parts; uniformly mixing the raw materials in a mixer to obtain a mixture A; putting the mixture A into a calcining furnace for heating reaction; taking the heated mixture A out, subjecting to standing cooling and putting into a mixing mill to be ground, and obtaining a mixture B; placing the mixture B in an acid solution to be subjected to acid pickling for 15 min, and obtaining a precipitate; and taking out the precipitate, and drying the precipitate in a drying oven to obtain the magnesium aluminate spinel powder. The magnesium powder, the aluminum powder, the titanium dioxide powder, the diboron trioxide powder and the like are used as raw materials, the mixture of the magnesium aluminate spinel and the titanium diboride is synthesized through combustion and chemical reaction, then the titanium diboride is removed through the acid solution, and the obtained magnesium aluminate spinel is higher in purity, lower in air hole, higher in volume density, smaller in expansion rate and better in stability.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a magnesium aluminum spinel refractory material and a preparation method thereof. Background technique [0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness not lower than 1580°C. Refractory materials are used in steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electric power, military industry and other national economic sectors. In various fields, it is an indispensable basic material to ensure the production operation and technological development of the above-mentioned industries, and plays an irreplaceable important role in the development of high-temperature industrial production. With the continuous improvement of my country's scientific and technological level, the requirements for high-temperature industrial production Higher and higher, the refractory mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/443
Inventor 郑泽平
Owner 郑泽平
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