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Production method of colored sintered alumina-silica refractory brick

A refractory brick and aluminum-silicon technology, which is applied in the field of refractory materials, can solve the problems of insufficient identification and oxidation resistance of aluminum-silicon refractory bricks, and achieve the effects of excellent corrosion resistance, excellent spalling resistance and various colors.

Inactive Publication Date: 2017-02-15
CHANGXING MENGYOU REFRACTORIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of insufficient recognition and anti-oxidation ability of aluminosilicate refractory bricks, the present invention provides a preparation method of colored sintered aluminosilicate refractory bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Take kaolin 40.3wt%, dickite 21.3wt%, muscovite 16.3wt%, zircon 8.6wt%, xenotime 7.2wt%, ilmenite 2.4wt% and cuprous oxide 3.9wt%, crushed to 50 mesh, heat preservation at 600° C. for 1 hour to obtain a mixture. Weigh 65.3wt% of the mixture, 21.2wt% of zirconia refractory fiber, 8.2wt% of carboxymethyl cellulose aqueous solution (concentration: 5%) and 5.3wt% of water, stir and mix evenly and age for 1 day to obtain a mixed slurry. The mixed slurry was made into bricks using a brick-making mold, and baked at 80° C. for 5 hours to obtain bricks to be finished. Weigh 25.5wt% of 400-mesh brucite powder, 8.2wt% of water glass and 66.3wt% of water, mix and stir evenly to obtain a surface finishing solution. Submerge the bricks to be finished in the surface finishing liquid for 15 minutes to obtain finished bricks, and bake the finished bricks at 65° C. for 6 hours to obtain bricks to be fired. The bricks to be burnt are kept at 700°C for 6 hours in an industrial nitrogen at...

Embodiment 2

[0034] Take kaolin 36.5 wt%, dickite 20.1 wt%, muscovite 15.7 wt%, zircon 13.6 wt%, xenotime 5.7 wt%, ilmenite 3.6 wt% and ferrous oxide 4.8 wt%, crushed to 100 mesh, heat preservation at 650° C. for 2 hours to obtain a mixture. Weigh 68.5wt% of the mixture, 19.3wt% of alumina refractory fiber, 5.4wt% of polyvinyl alcohol aqueous solution (concentration: 4%) and 6.8wt% of water, stir and mix evenly and age for 2 days to obtain a mixed slurry. The mixed slurry was made into bricks using a brick-making mold, and baked at 85° C. for 6 hours to obtain bricks to be finished. Weigh 21.5wt% of 400-mesh bauxite powder, 9.2wt% of sodium tripolyphosphate and 69.3wt% of water, mix and stir evenly to obtain a surface finishing solution. Submerge the bricks to be finished in the surface finishing solution for 30 minutes to obtain finished bricks, and bake the finished bricks at 70° C. for 8 hours to obtain bricks to be fired. The bricks to be burnt are kept at 800°C for 9 hours in an ind...

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Abstract

The invention discloses a production method of a colored sintered alumina-silica refractory brick. The colored sintered alumina-silica refractory brick is formed by sintering kaolin, dickite, white mica, zircon, xenotime, ilmenite, a coloring substance, refractory fibers, a binder and a finishing agent. The method comprises the following steps: 1, forming a mixture; 2, forming a mixed slurry; 3, forming a brick to be finished; 4, forming a finished brick; 5, forming a brick to be sintered; and 6, carrying out sintering molding. The colored sintered alumina-silica refractory brick produced in the invention has the characteristics of bright color, diversified colors, long-time oxidation resistance, good erosion resistance, good permeation resistance, good anti-stripping performance and excellent thermal shock stability.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a method for preparing colored sintered aluminum-silicon refractory bricks. Background technique [0002] Aluminosilicate refractory brick is a kind of clay refractory material. It was used as the lining material of steelmaking converter in the early 1960s, making an important contribution to the development of my country's converter steelmaking industry. By the end of the 1980s, due to the promotion and use of magnesia carbon bricks, the amount of clay refractory materials was greatly reduced. Since the beginning of this century, with the rapid development of stainless steel and clean steel production in China, especially the decline in steel prices, clay refractory materials have been re-emphasized due to their low price and environmental protection advantages. [0003] Aluminosilicate refractory bricks have a refractoriness of 1580-1770°C, a high-temperature compressive st...

Claims

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Application Information

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IPC IPC(8): C04B33/13C04B35/66C04B33/32C04B41/85
CPCC04B33/13C04B33/32C04B35/66C04B41/5072C04B41/85C04B2235/3225C04B2235/3232C04B2235/3248C04B2235/3281C04B2235/3472C04B2235/5236C04B41/5024
Inventor 佘玉明
Owner CHANGXING MENGYOU REFRACTORIES
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