Unlock instant, AI-driven research and patent intelligence for your innovation.

Homogenized alumina-based aluminum-magnesium castable and preparation method thereof

A technology for homogenizing bauxite and castables, applied in the field of fireproof materials, can solve the problems of large influence on the service life of aluminum-magnesium castables, efflorescence cracking, etc., and achieve the effect of improving the corrosion resistance of high-temperature melts

Inactive Publication Date: 2020-07-03
河南兴亚能源有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the change of iron and steel smelting raw materials and environment, the change of slag alkalinity has a greater impact on the service life of aluminum-magnesium castables under different combination systems, and the traditional bauxite clinker under different combination systems will experience efflorescence cracking during use Therefore, it is necessary to develop a high-performance homogeneous alumina-based aluminum-magnesium castable that can avoid the enrichment of alkali salts and impurities.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The invention provides a homogenized bauxite-based aluminum-magnesium castable and a preparation method thereof. 4~8 parts, 1~3 parts of silica micropowder, 1~5 parts of bimodal activated alumina micropowder, 0.5~1 part of antioxidant, 0.1~0.2 part of superplasticizer, 3~5 parts of water.

[0017] A homogenized alumina-based aluminum-magnesium castable and a preparation method thereof comprise the following steps:

[0018] (1) After weighing the bimodal activated alumina micropowder and silica micropowder with an electronic scale according to the above ratio, mix the above substances with a mixer to obtain a mixture A;

[0019] (2) Weigh brown corundum fine powder, homogenized bauxite, and magnesia fine powder with an electronic scale according to the above ratio, and mix the above materials with a mixer to obtain mixture B;

[0020] (3) After weighing the antioxidant and high-efficiency water reducer with an electronic scale according to the above ratio, mix the above...

Embodiment 2

[0025] A homogenized bauxite-based aluminum-magnesium castable and its preparation method are prepared from the following raw materials in parts by weight: 60 parts of homogenized bauxite, 6 parts of subdivided brown corundum, 4 parts of magnesia fine powder, and micro-silica powder 1 part, 1 part of bimodal activated alumina micropowder, 0.5 part of antioxidant, 0.1 part of superplasticizer, 3 parts of water.

[0026] A homogenized alumina-based aluminum-magnesium castable and a preparation method thereof comprise the following steps:

[0027] (1) After weighing the bimodal activated alumina micropowder and silica micropowder with an electronic scale according to the above ratio, mix the above substances with a mixer to obtain a mixture A;

[0028] (2) Weigh brown corundum fine powder, homogenized bauxite, and magnesia fine powder with an electronic scale according to the above ratio, and mix the above materials with a mixer to obtain mixture B;

[0029] (3) After weighing t...

Embodiment 3

[0034] The invention provides a homogenized bauxite-based aluminum-magnesium castable and a preparation method thereof prepared from the following raw materials in parts by weight: 70 parts of homogenized bauxite, 8 parts of finely divided brown corundum, 6 parts of magnesia fine powder, two 2 parts of silica micropowder, 3 parts of bimodal activated alumina micropowder, 0.75 part of antioxidant, 0.15 part of superplasticizer, and 4 parts of water.

[0035] A homogenized alumina-based aluminum-magnesium castable and a preparation method thereof comprise the following steps:

[0036] (1) After weighing the bimodal activated alumina micropowder and silica micropowder with an electronic scale according to the above ratio, mix the above substances with a mixer to obtain a mixture A;

[0037] (2) Weigh brown corundum fine powder, homogenized bauxite, and magnesia fine powder with an electronic scale according to the above ratio, and mix the above materials with a mixer to obtain mi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
flexural strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of refractory materials, specifically to a homogenized alumina-based aluminum-magnesium castable and a preparation method thereof. The homogenized alumina-based aluminum-magnesium castable is prepared from the following raw materials in parts by weight: 60-80 parts of homogenized alumina, 6-10 parts of brown fused alumina fine powder, 4-8 parts of magnesia fine powder, 1-3 parts of silicon dioxide micro-powder, 1-5 parts of bimodal active aluminum oxide micro-powder, 0.5-1 part of an antioxidant, 0.1-0.2 part of a superplasticizer and 3-5 parts of water. According to the homogenized alumina-based aluminum-magnesium castable developed by the invention, the homogenized alumina is adopted to replace traditional products like a high-bauxite-content clinker and fused alumina, and calcium oxide is doped to modify the homogenized alumina, so a calcium aluminate protective shell layer is formed on the surface of the homogenized alumina in situ in a high-temperature use environment, and the high-temperature melt corrosion resistance of the castable is improved.

Description

technical field [0001] The invention relates to the field of fireproof materials, in particular to a homogenized alumina-based aluminum-magnesium castable and a preparation method thereof. Background technique [0002] Refined ladle lining refractories are in direct contact with high-temperature molten steel and slag during service, and the service environment is complex and harsh, and suffers serious damage. Molten steel and slag components react with each other under high temperature to produce new components and bring about volume effects, which will cause erosion and damage to refractory materials. With the change of iron and steel smelting raw materials and environment, the change of slag alkalinity has a greater impact on the service life of aluminum-magnesium castables under different combination systems, and the traditional bauxite clinker under different combination systems will experience efflorescence cracking during use Such phenomena affect the use of materials...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/96C04B2235/9607
Inventor 杨亚林
Owner 河南兴亚能源有限公司