Zirconium-containing high-strength wear-resistant castable

A castable, high-strength technology, applied in the field of zirconium-containing high-strength wear-resistant castables, can solve problems such as poor strength and poor wear resistance, and achieve high wear resistance, good wear resistance, and compact microstructure

Active Publication Date: 2013-11-06
巩义市科恒耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to further improve the defects such as poor strength and poor wear resistance of existing castables, the present invention has developed a new castable, namely a high-strength wear-resistant ceramic castable containing zirconium corundum fine powder

Method used

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  • Zirconium-containing high-strength wear-resistant castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The brown fused alumina 28% is composed of 10% brown fused alumina with a particle size of 5-8mm and 18% brown fused alumina with a particle size of 0-1mm; the Al in the brown fused alumina 2 o 3 The mass percentage content ≥ 94.5%;

[0027] The 42% of the sintered mullite is composed of 21% of the sintered mullite with a particle size of 3-5mm and 21% of the sintered mullite with a particle size of 1-3mm; the Al in the sintered mullite 2 o 3 The mass percentage content ≥ 70%;

[0028] The particle size of the corundum powder is 200 mesh, and the Al in the corundum powder 2 o 3 The mass percentage content ≥ 95%;

[0029] The particle size of described mullite fine powder is 180 orders, and in mullite fine powder, Al 2 o 3 The mass percentage content ≥ 70%;

[0030] The particle size of the zirconium corundum fine powder is 2 o 3 The mass percentage content of ≥70%, ZrO 2 The mass percentage content ≥ 24%; the particle size of the silicon micropowder is 2 conte...

Embodiment 2

[0032] The zirconium-containing high-strength wear-resistant castable of the present invention is represented by weight percentage. The raw material ratio of the zirconium-containing high-strength wear-resistant castable is: brown corundum 32%, sintered mullite 42%, corundum powder 4%, mullite Stone fine powder 6%, a-AI 2 o 3 4%, zirconium corundum fine powder 2%, silicon micropowder 3%, pure calcium aluminate cement 6.85% and sodium hexametaphosphate 0.15%.

[0033] The 32% brown fused alumina is composed of 12% brown fused alumina with a particle size of 5-8mm and 20% brown fused alumina with a particle size of 0-1mm;

[0034] The 42% sintered mullite is composed of 21% sintered mullite with a particle size of 3-5 mm and 21% sintered mullite with a particle size of 1-3 mm; the particle size of the mullite fine powder is 200 mesh.

[0035] Embodiment 3: basically the same as Embodiment 1, the difference is:

Embodiment 3

[0036] The zirconium-containing high-strength wear-resistant castable of the present invention is represented by weight percentage. The raw material ratio of the zirconium-containing high-strength wear-resistant castable is: brown corundum 23%, sintered mullite 47%, corundum powder 5%, mullite Stone fine powder 6%, a-AI 2 o 3 5%, zirconium corundum fine powder 3.9%, silicon micropowder 3%, pure calcium aluminate cement 7% and sodium hexametaphosphate 0.1%.

[0037] The brown fused alumina 23% is composed of 8% brown fused alumina with a particle size of 5-8mm and 15% brown fused alumina with a particle size of 0-1mm;

[0038] The 47% sintered mullite is composed of 23% sintered mullite with a particle size of 3-5mm and 24% sintered mullite with a particle size of 1-3mm; the particle size of the mullite fine powder is 200 mesh.

[0039] Embodiment 4: basically the same as Embodiment 1, the difference is:

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Abstract

The invention discloses a zirconium-containing high-strength wear-resistant castable, which comprises, by weight: 23-32% of brown fused alumina, 42-52% of sintered mullite, 4-8% of corundum powder, 6-10% of mullite fine powder, 3-5% of a-AI2O3, 2-5% of fused alumina zirconia fine powder, 3-5% of silica powder, 6-10% of pure calcium aluminate cement and 0.1-0.15% of a water reducing agent. The zirconium-containing high-strength wear-resistant castable is prepared by: firstly grinding and mixing the corundum powder, the mullite fine powder, the a-AI2O3 and the fused alumina zirconia powder, then adding the remaining various raw materials, and performing mixing stirring. The castable product disclosed in the invention has the characteristics of high bonding strength, strong anti-scouring performance, high compressive strength, good wear resistance, and good thermal shock resistance and stripping resistance, etc.

Description

technical field [0001] The invention relates to an unshaped refractory material, in particular to a zirconium-containing high-strength wear-resistant casting material. Background technique [0002] In the application of refractory materials, unshaped refractory materials have the advantages of less investment, low energy consumption, good thermal shock stability of the overall lining, good air tightness, and the ability to repair furnace linings, etc. Materials are more widely used. Castable is currently the most widely produced and used unshaped refractory material. It is mainly used in cement fields such as blast furnaces, hot blast furnaces, waste incinerators, and chemical industries. It can also be used to build overall structures such as linings for heating furnaces; It can also be used in smelting furnaces. The refractory castables commonly used in industry mainly include aluminate castables, water glass castables and phosphate castables. [0003] At present, a kind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 白周武王金元苏建平白周文白周利
Owner 巩义市科恒耐火材料有限公司
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