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Corundum-mullite honeycomb ceramic heat accumulator

A technology of honeycomb ceramics and mullite, which is applied in the field of honeycomb ceramic regenerators, can solve the problems of large pressure drop and limited thermal area, achieve good thermal conductivity, large specific surface area, and prevent waste of raw materials

Active Publication Date: 2012-04-04
晋城市富基新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1980s, breakthroughs were made in the development of regenerators, and small-diameter spherical and spot-welded (pebble-like) ceramic bodies appeared, which made the regenerator structure compact and integrated with the burner, but the pressure drop generated during use was large, and the heat The area is also limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] According to the weight ratio of 58:19:8:6:9, fully mix mullite, corundum, clay, talc and alumina to make ceramic powder.

[0052] Mix ceramic powder, glue, glycerin, water, and cellulose according to the weight ratio of 75:8:5:8:4, add to a mixer and stir for 1 hour to make the stirring even, and make ceramic mud.

[0053] The ceramic mud is roughly refined and refined by a mud refining machine, then processed by a vacuum machine, and extruded by a mold in a molding machine to form a ceramic green body.

[0054]Put the green body of the ceramic regenerator into the microwave for shaping, and then send it into the drying room. The temperature is controlled within the range of 100-110°C, and it is dried for 24 hours to harden it. The end face of the dried body is processed to obtain a neat honeycomb end face. .

[0055] Put the processed complete honeycomb ceramic body into the sintering furnace, heat up to 550°C at a heating rate of 60°C / h for low-temperature debinding...

Embodiment 2

[0057] According to the weight ratio of 59:18:9:6:8, mullite, corundum, clay, talc and alumina are fully mixed to make ceramic powder.

[0058] Mix ceramic powder, glue, glycerin, water, and cellulose according to the weight ratio of 73:8:5:10:4, add to a mixer and stir for 1 hour to make the stirring even, and make ceramic mud.

[0059] The ceramic mud is roughly refined and refined by a mud refining machine, then processed by a vacuum machine, and extruded by a mold in a molding machine to form a ceramic green body.

[0060] Put the green body of the ceramic regenerator into the microwave for shaping, and then send it into the drying room. The temperature is controlled within the range of 100-110°C, and it is dried for 24 hours to harden it. The end face of the dried body is processed to obtain a neat honeycomb end face. .

[0061] Put the processed complete honeycomb ceramic body into the sintering furnace, heat up to 550°C at a heating rate of 60°C / h for low-temperature d...

Embodiment 3

[0063] According to the weight ratio of 56:20:9:7:8, fully mix mullite, corundum, clay, talc, and alumina to make ceramic powder.

[0064] Mix ceramic powder, glue, glycerin, water, and cellulose according to the weight ratio of 72:9:7:9:4, add to a mixer and stir for 1 hour to make the stirring even, and make ceramic mud.

[0065] The ceramic mud is roughly refined and refined by a mud refining machine, then processed by a vacuum machine, and extruded by a mold in a molding machine to form a ceramic green body.

[0066] Put the green body of the ceramic regenerator into the microwave for shaping, and then send it into the drying room. The temperature is controlled within the range of 100-110°C, and it is dried for 24 hours to harden it. The end face of the dried body is processed to obtain a neat honeycomb end face. .

[0067] Put the processed complete honeycomb ceramic body into the sintering furnace, heat up to 550°C at a heating rate of 60°C / h for low-temperature debindi...

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Abstract

The invention belongs to the inorganic nonmetal field, and relates to a corundum-mullite honeycomb ceramic heat accumulator for waste heat recovery of high-temperature kiln tail gas. The honeycomb ceramic heat accumulator is prepared by the following steps of: forming ceramic powder from corundum, mullite, alumina, clay and the like; adding cellulose, glycerol, glue and water to prepare plastic mud; and mixing, mixing mud, performing vacuum pug, forming, drying and performing high-temperature sintering. The honeycomb ceramic heat accumulator prepared by the method has the characteristics of superior high temperature strength, high heat accumulation capacity, high heat exchange speed, high thermal shock stability, low cost, easiness in operation and adaptation to industrial production.

Description

technical field [0001] The invention belongs to the field of inorganic non-metal, and relates to the purification and recovery of industrial kiln tail gas waste heat, in particular to a honeycomb ceramic regenerator. More specifically, the invention relates to a honeycomb ceramic regenerator containing mullite and corundum as ceramic components. The regenerator prepared by the invention is used for filtration, purification, treatment and recycling of high-temperature flue gas waste heat of industrial kilns. Background technique [0002] Since the mid-19th century, large-scale and high-temperature furnaces such as blast furnaces, hot blast stoves, and coke ovens have begun to use regenerative combustion technology to recover high-temperature flue gas waste heat. After using the regenerator to recover the waste heat of the flue gas, the thermal efficiency of the furnace is obviously improved. However, checkered bricks were used as the heat storage body in the initial heat sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622
Inventor 李军虎刘志刚田建刚
Owner 晋城市富基新材料股份有限公司
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