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High strength acid resistant refractory brick and preparation method thereof

A high-strength and temperature-resistant technology, used in the field of high-strength acid-resistant and temperature-resistant bricks, can solve the problems of easy aging, influence, and high cost of impregnating graphite, and achieve excellent corrosion resistance.

Inactive Publication Date: 2009-10-14
湖南省醴陵市鑫荷化工填料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner lining of the reaction pot used in the domestic production of aluminum sulfate was originally made of impregnated graphite and lead-lined materials. The impregnated graphite is not only expensive but also easy to age.
The lead filling is not only harmful to human health during operation, but also has a certain impact on product quality (pollution medium), and its service life is only one year

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix 50kg of Guizhou kaolin, 20kg of Jiepa mud, 19kg of fused quartz, 6kg of talc powder and 5kg of alumina powder evenly; use a ball mill to grind, add the above-mentioned ground mixture into the basic slurry and stir evenly, pump the slurry, and press Squeeze out 80% of the water through the filter in the mud machine, pile it up in blocks and put it indoors for 36 hours to sink and rot, pass through the mud refining machine for rough refining, discharge the air in the components, and then place it indoors for 36 hours to sink and rot, and then put it through mud refining Extruded by machine and mold, cut into specifications to get semi-finished products, dried or air-dried, fine embryos, and then sintered at a high temperature of 1360°C to obtain the high-strength acid-resistant and heat-resistant bricks of the present invention.

Embodiment 2

[0044] Mix 64kg of Guizhou kaolin, 15kg of Jiepa mud, 15kg of fused quartz, 3kg of talc powder and 3kg of alumina powder evenly; use a ball mill to grind, add the above-mentioned ground mixture into the basic slurry and stir evenly, pump the slurry, and press Squeeze out 80% of the water through the filter in the mud machine, pile it up in blocks and put it indoors for 36 hours to sink and rot, pass through the mud refining machine for rough refining, discharge the air in the components, and then place it indoors for 36 hours to sink and rot, and then put it through mud refining Extruded by machine and mold, cut into specifications to get semi-finished products, dried or air-dried, fine embryos, and then sintered at a high temperature of 1360°C to obtain the high-strength acid-resistant and heat-resistant bricks of the present invention.

Embodiment 3

[0046] Mix 53kg of Guizhou kaolin, 18kg of Jiepa mud, 20kg of fused quartz, 5kg of talc powder and 4kg of alumina powder evenly; use a ball mill to grind, add the above-mentioned ground mixture into the basic slurry and stir evenly, pump the slurry, and press Squeeze out 80% of the water through the filter in the mud machine, pile it up in blocks and put it indoors for 36 hours to sink and rot, pass through the mud refining machine for rough refining, discharge the air in the components, and then place it indoors for 36 hours to sink and rot, and then put it through mud refining Extruded by machine and mold, cut into specifications to get semi-finished products, dried or air-dried, fine embryos, and then sintered at a high temperature of 1360°C to obtain the high-strength acid-resistant and heat-resistant bricks of the present invention.

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Abstract

The invention discloses a high strength acid resistant refractory brick which comprises the components with weight percentages as follows: 50-70% of Guizhou kaolin, 15-20% of Jiepai mud, 15-35% of fused quartz, 3-6% of talcum powder and 3-5% of powdered alumina. The invention aims at overcoming the shortcomings in the prior art and providing a high strength acid resistant refractory brick which is high temperature resistant, chilling resistant, good in strong acid erosiveness resistance and environment-friendly. The invention has another aim of providing a method for preparing the high strength acid resistant refractory brick.

Description

technical field [0001] The invention relates to a high-strength acid-resistant and heat-resistant brick, and also relates to a preparation method of the high-strength acid-resistant and heat-resistant brick. Background technique [0002] In the non-ferrous metal smelting, chemical industry and other industries, all kinds of equipment linings such as reaction tanks, towers, tanks, and mixing tanks are made of special materials that are resistant to high temperature, rapid cooling, and strong acid erosion. At present, there are more than 100 aluminum sulfate production plants in the country, and each plant uses as many as six or seven main equipment reaction pots, and as few as three or four. In the past, due to the particularity of aluminum sulfate production process conditions (temperature 160 ~ 170 ℃, pressure 0.32MPa, medium 56% sulfuric acid). The inner lining of the reaction pot used in the domestic production of aluminum sulfate was originally made of impregnated graph...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 张亮
Owner 湖南省醴陵市鑫荷化工填料有限公司
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