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Low-porosity magnesium aluminate spinel-zirconia corundum zirconia composite sintered refractory material and production technology thereof

A technology of magnesium aluminum spinel and refractory materials, which is applied in the field of magnesium aluminum spinel-chrome corundum zirconia sintered composite refractory materials and its production technology, and can solve the problems of high price and high price.

Active Publication Date: 2014-02-26
RUITAI MATERIALS TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the price of zirconia is as high as 30,000 yuan / ton or more, the price of the material has been significantly increased after adding zirconium

Method used

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  • Low-porosity magnesium aluminate spinel-zirconia corundum zirconia composite sintered refractory material and production technology thereof
  • Low-porosity magnesium aluminate spinel-zirconia corundum zirconia composite sintered refractory material and production technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Aluminum-rich magnesium-aluminum spinel with 74% alumina content and 26% magnesium oxide content is used as the main material, and the weight ratio is: 5-1mm synthetic magnesium-aluminum spinel 45%, 1-0.088mm synthetic magnesium-aluminum spinel Spar 10%, 1-0.088mm aluminum chrome slag or chrome corundum 9%, 3 , apparent porosity 12.6%, load softening temperature T 0.6 >1700 ℃, thermal shock stability 1100 ℃ water cooling ≥ 6 times, the refractory material with good high temperature resistance, thermal shock resistance, low porosity physics and ideal chemical mineral composition has been produced.

Embodiment 2

[0024] Aluminum-rich magnesium-aluminum spinel with 74% alumina content and 26% magnesium oxide content is used as the main material, and the ratio is: 5-1mm synthetic magnesium-aluminum spinel 40%, 1-0.088mm aluminum chromium slag or chrome corundum 20%, 3 , apparent porosity 13.8%, load softening temperature T 0.6 >1700°C, thermal shock stability 1100°C water cooling ≥8 times, a refractory material with good high temperature resistance, thermal shock resistance, low porosity physics and ideal chemical mineral composition has been produced.

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Abstract

The invention discloses a low-porosity magnesium aluminate spinel-zirconia corundum zirconia composite sintered refractory material and a production technology thereof. The composite sintered refractory material comprises, in percent by weight, 38-48% of synthetic magnesium aluminate spinel with a size of 5-1 mm, 0-20% of synthetic magnesium aluminate spinel with a size of 1-0.088 mm, 5-20% of an aluminium chromium slag or zirconia corundum with a size of 1-0.088 mm, 10-25% of an aluminium chromium slag or zirconia corundum with a size less than 0.088 mm, 0-10% of corundum with a size less than 0.033 mm, 0-10% of chrome green with a size less than 0.033 mm, 2-10% of alpha alumina micro powder, 0-3% of magnesium oxide micro powder, 2-10% of zirconia micro powder, 0.05-0.2% of additional third generation water reducer and 3-7% of additional paper pulp waste liquid. The production technology comprises: weighing, burdening, mixing, molding, drying, and sintering at 1660-1800 DEG C for 5-10 h. The low-porosity magnesium aluminate spinel-zirconia corundum zirconia composite sintered refractory material has lowapparent porosityand the performances of resisting high temperature, resisting corrosion and resisting thermal shock, and is applicable to kiln lining at severe positions of a kiln.

Description

technical field [0001] The invention relates to a low-porosity magnesium-aluminum spinel-chromium corundum zirconia sintered composite refractory material and a production process thereof, and relates to a refractory material and a production process thereof. Background technique [0002] Chrome corundum is a refractory material that can resist the erosion of neutral to weakly acidic slag, and is widely used in high-temperature industries such as colored glass industry, fiber glass industry, rock wool fiber industry, zinc oxide melting industry, waste incineration industry, petrochemical and coal chemical industries, etc. Industry kilns. Chrome corundum refractories are difficult to sinter. In order to improve sintering and improve thermal shock resistance, ZrO is often added to brick making materials 2 To make chrome corundum - zirconium composite material. However, because the price of zirconia is as high as 30,000 yuan / ton or more, the price of materials has been signi...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 王杰曾袁林刘锡俊魏瀚成洁胡建辉
Owner RUITAI MATERIALS TECHNOLOGY CO LTD
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