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High-strength self-flow type explosionproof refractory castable

A refractory castable, high-strength technology, applied in the field of refractory materials, can solve the problems that affect the normal production of cement kilns, reduce the strength of castables, burst and fall off castables, etc., achieve the effects of shortening the bonding time, reducing the amount of water added, and improving shock resistance

Inactive Publication Date: 2019-03-22
JIANGSU HENGNAI FURNACE CHARGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, refractory castables with bauxite as the main raw material are mostly used in cement kiln grate coolers, kiln hoods and other irregular parts. The castables need vibration equipment to vibrate, but the irregular parts of the cement kiln are difficult to mold and vibrate. To make the castable easy to empty, the construction team usually increases the amount of water added to improve the fluidity of the castable, the castable will segregate, the strength of the castable will be greatly reduced, and rapid baking in order to improve the construction efficiency will cause the castable to burst and fall off , the cement kiln was forced to shut down, which affected the normal production of the cement kiln

Method used

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Embodiment 1

[0021] For the high-strength self-flowing explosion-proof refractory castable in this embodiment, the following components by mass percentage can be mixed evenly: 6% of brown corundum with a particle size of 0-1mm, 19.7% of brown corundum with a particle size of 1-3mm, and Brown corundum 30% for 3-5mm, SiC particles 10% for particle size 0-1mm, SiO 2 Micro powder 3%, SiC fine powder 7%, white corundum powder 8%, α-Al 2 o 3 Micro powder 6%, pure calcium aluminate cement 8%, sodium tripolyphosphate 0.1%, polypropylene fiber 0.1%, metal aluminum powder 2%, silicone leveling agent 0.1%.

[0022] In this embodiment: the SiC fine powder has a particle size of 0.06 mm.

Embodiment 2

[0024] For the high-strength self-flowing explosion-proof refractory castable in this embodiment, just mix the following components in mass percentages: weigh the following mass fractions of materials: 15% brown corundum with a particle size of 0-1mm, and a particle size of 1-3mm 10% of brown corundum, 29.8% of brown corundum with a particle size of 3-5mm, 5% of SiC particles with a particle size of 0-1mm, SiO 2 Micro powder 4.8%, SiC fine powder 3%, white corundum powder 15.6%, α-Al 2 o 3 Micro powder 5.9%, pure calcium aluminate cement 7.9%, sodium tripolyphosphate 0.4%, polypropylene fiber 0.6%, metal aluminum powder 0.1%, silicone leveling agent 1.9%.

[0025] In this embodiment: the SiC fine powder has a particle size of 0.05 mm.

Embodiment 3

[0027] For the high-strength self-flowing explosion-proof refractory castable in this embodiment, just mix the following components in mass percentages: Weigh the following mass fractions of materials: 14.45% of brown corundum with a particle size of 0-1mm and a particle size of 1-3mm 20% of brown corundum, 15% of brown corundum with a particle size of 3-5mm, 9.8% of SiC particles with a particle size of 0-1mm, SiO 2 Micro powder 5%, SiC fine powder 6.9%, white corundum powder 18%, α-Al 2 o 3 Micropowder 3%, pure calcium aluminate cement 3%, sodium tripolyphosphate 0.38%, polypropylene fiber 0.57%, metal aluminum powder 1.9%, silicone leveling agent 2%.

[0028] In this embodiment: the SiC fine powder has a particle size of 0.08mm.

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Abstract

The invention relates to the field of refractory materials and specifically relates to high-strength self-flow type explosionproof refractory castable. The high-strength self-flow type explosionproofrefractory castable disclosed by the invention is prepared from the following ingredients in mass percent: 6% to 15% of brown fused alumina with the particle diameter as 0 to 1 mm, 10% to 20% of brownfused alumina with the particle diameter as 1 to 3 mm, 15% to 30% of brown fused alumina with the particle diameter as 3 to 5 mm, 5% to 10% of SiC particle with the particle diameter as 0 to 1 mm, 3%to 5% of SiO2 micropowder, 3% to 7% of SiC fine powder, 8% to 18% of white fused alumina powder, 3% to 6% of alpha-Al2O3 micropowder and 3% to 8% of pure calcium aluminate cement. According to the high-strength self-flow type explosionproof refractory castable disclosed by the invention, the brown fused alumina raw materials with different particle diameters are utilized as the main materials, sothat compact performance and compression strength are enhanced; furthermore, cost is reduced; by means of adding polypropylene fiber composite metal aluminum powder, oxidation resistance is achieved;meanwhile, toughness of the castable is enhanced, shock resistance and explosionproof performance are improved, and self-flow performance is better.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a high-strength self-flowing explosion-proof refractory castable. Background technique [0002] At present, refractory castables with bauxite as the main raw material are mostly used in cement kiln grate coolers, kiln hoods and other irregular parts. The castables need vibration equipment to vibrate, but the irregular parts of the cement kiln are difficult to mold and vibrate. To make the castable easy to empty, the construction team usually increases the amount of water added to improve the fluidity of the castable, the castable will segregate, the strength of the castable will be greatly reduced, and rapid baking in order to improve the construction efficiency will cause the castable to burst and fall off , The cement kiln was forced to shut down, which affected the normal production of the cement kiln. Contents of the invention [0003] The technical problem to be solved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/103
CPCC04B35/103C04B2235/3208C04B2235/3222C04B2235/3418C04B2235/3826C04B2235/402C04B2235/5212
Inventor 韩亚伟王华龙黄朋
Owner JIANGSU HENGNAI FURNACE CHARGE GRP
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