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A kind of aluminum-magnesium ramming material for intermediate frequency furnace and preparation method thereof

A technology for ramming material and intermediate frequency furnace, which is applied in the field of aluminum-magnesium ramming material for intermediate frequency furnace and its preparation, can solve the problems of low medium and low temperature strength, long holding time and high comprehensive cost, and achieves reduction of temperature and time, and reduction of raw materials. Cost and effect of improving sintering efficiency

Active Publication Date: 2022-07-01
湖北品申科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional intermediate frequency furnace ramming material is generally made of corundum magnesia as the main material, and the overall cost is high. Moreover, the medium and low temperature strength of the traditional intermediate frequency furnace ramming material is low, which makes the furnace very prone to collapse during the baking process. At the same time, the It is difficult to sinter the ramming material at high temperature, which requires a high sintering temperature and a long holding time, and it is difficult to bake the furnace lining

Method used

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  • A kind of aluminum-magnesium ramming material for intermediate frequency furnace and preparation method thereof
  • A kind of aluminum-magnesium ramming material for intermediate frequency furnace and preparation method thereof
  • A kind of aluminum-magnesium ramming material for intermediate frequency furnace and preparation method thereof

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Embodiment 1

[0037] A preparation method of aluminum-magnesium ramming material for intermediate frequency furnace. First, raw materials are prepared. The components and contents of the raw materials are 33wt% fused corundum particles, 28wt% recycled furnace body ramming material, and 16wt% waste carbon-free Brick particles, 15wt% tabular corundum and 8wt% fused magnesia fine powder; then add a binder to the raw material, the components of the binder and the content of the raw material are 0.5wt% silicon micropowder and 1.7wt% The aluminum-magnesium ramming material for intermediate frequency furnace is obtained by mixing the raw materials and the binder in a mixer for 20 minutes, and mixing evenly.

[0038] During construction, 2.5wt% of water was added to mix evenly, the sintering temperature was 1625℃, the baking time was 2.5h, and the holding time was 0.5h; the physical and chemical properties of the ramming material were: 110℃×24h, the bulk density after baking was 2.75g / cm3 , flexura...

Embodiment 2

[0040] A preparation method of aluminum-magnesium ramming material for intermediate frequency furnace. First, raw materials are prepared. The components and contents of the raw materials are 30wt% fused corundum particles, 25wt% recycled furnace body ramming material, and 18wt% waste carbon-free Brick particles, 17wt% tabular corundum and 10wt% fused magnesia fine powder; then add a binder to the raw material, the components of the binder and the content of the raw material are 0.8wt% silicon micropowder and 1.0wt% The aluminum-magnesium ramming material for intermediate frequency furnace is obtained by mixing the raw materials and the binder in a mixer for 20 minutes, and mixing evenly.

[0041]During construction, 2.0wt% of water was added to mix evenly, the sintering temperature was 1630℃, the baking time was 3.5h, and the holding time was 0.75h; the physical and chemical properties of the ramming material were: 110℃×24h, the bulk density after baking was 2.80g / cm3 , the fl...

Embodiment 3

[0043] A preparation method of aluminum-magnesium ramming material for intermediate frequency furnace. First, raw materials are prepared. The components and contents of the raw materials are 37wt% fused corundum particles, 32wt% recycled furnace body ramming material, and 13wt% waste carbon-free Brick particles, 12wt% tabular corundum and 6wt% fused magnesia fine powder; then add a binder to the raw material, the components of the binder and the content of the raw material are 0.8wt% silicon micropowder and 2.4wt% The aluminum-magnesium ramming material for intermediate frequency furnace is obtained by mixing the raw material and the binder in a mixer for 30 minutes, and mixing evenly.

[0044] During construction, 3.0wt% water was added to mix evenly, the sintering temperature was 1630℃, the baking time was 5.0h, and the holding time was 0.75h; the physical and chemical properties of the ramming material were: 110℃×24h, the bulk density after baking was 2.80g / cm 3 , the flexu...

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Abstract

The invention relates to the field of refractory materials for intermediate frequency furnaces, in particular to an aluminum-magnesium ramming material for intermediate frequency furnaces and a preparation method thereof. The aluminum-magnesium ramming material for an intermediate frequency furnace designed by the present invention is characterized in that the aluminum-magnesium ramming material for an intermediate frequency furnace includes raw materials and a binder, and the components and contents of the raw materials are 30- 40wt% of fused corundum particles, 25-35wt% of recycled furnace body ramming material, 10-18wt% of waste carbon-free brick particles, 10-17wt% of tabular corundum and 4-10wt% of fused magnesia fines powder; the components of the binder and the content of the raw materials are 0.5-1.5wt% of silicon micropowder and 1.0-3.0wt% of aluminum sol; the obtained aluminum-magnesium ramming material for intermediate frequency furnace has high strength at medium and low temperature , Low sintering temperature, short baking time and low cost.

Description

technical field [0001] The invention relates to the field of refractory materials for intermediate frequency furnaces, in particular to an aluminum-magnesium ramming material for intermediate frequency furnaces and a preparation method thereof. Background technique [0002] The use of intermediate frequency furnaces is very extensive, and it has become one of the important production equipment for carbon steel smelting, casting and alloy steel smelting. The cost performance of furnace lining materials directly affects the smelting cost. During use, the ramming material forms a three-layer structure of sintered layer, transition layer and loose layer. The working layer resists the erosion and erosion of molten steel, and the non-working layer remains in an unburned loose state to absorb stress and prevent cracks in the working layer. purpose of expansion. [0003] At present, the traditional intermediate frequency furnace ramming material is generally made of corundum magne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3206C04B2235/5427C04B2235/5436C04B2235/428C04B2235/3218C04B2235/77C04B2235/96C04B2235/9615C04B2235/9607
Inventor 袁聪李远兵刘芳袁添翼
Owner 湖北品申科技有限公司