External wall thermal insulation light foamed ceramic and preparation method thereof

A light-weight foam and external wall insulation technology, applied in the field of building materials, can solve the problems of high price, serious environmental pollution, and low reprocessing utilization rate, and achieve the effects of protecting the environment, low thermal conductivity, and beneficial to waste utilization

Active Publication Date: 2012-07-18
ZHONGCAI HIGH NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For Class A non-combustible inorganic thermal insulation materials, there is a problem of high price
[0003] On the other hand, the industrial solid waste produced in my country every year amounts to more than one billion tons, and the reprocessing utilization rate is low, which seriously pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 70kg of coal gangue, 10kg of bottle waste glass and 20kg of nafeldspar into a ball mill for wet grinding for 24 hours. Add 0.5kg of active aluminum powder to the slurry, stir for 4 minutes, add 0.1kg of triethanolamine, stir for 2 minutes, then add 5kg of concentrated hydrochloric acid, continue stirring for 22s, inject the slurry into a mold with a temperature of 28°C, and let it stand for 40 minutes. Send it to the drying room to dry. The drying system of the drying room is as follows: firstly keep the temperature at 30°C and the humidity at 80% for 8 hours, then adjust the temperature at 50°C and the humidity at 70%, keep it at this condition for 6 hours, and finally adjust the temperature at 80°C and the humidity at 30%. Keeping it under these conditions for 5 hours can complete the drying. The dry foam ceramic green body is demolded and sent to a kiln for firing. The sintering temperature is 1060°C and the holding time is 1 hour. Then the temperature is natura...

Embodiment 2

[0031] Put 70kg of metal tailings and 30kg of perlite into a ball mill for wet grinding for 24 hours, weigh the slurry out of the mill and enter it into a water bath agitator for stirring. After the temperature of the slurry becomes uniformly 27.5°C, add 0.6kg of active aluminum powder, stir for 3 minutes, add 0.2kg of glycerin, stir for 2 minutes, then add 6kg of concentrated hydrochloric acid, continue stirring for 30s, pour the slurry into a mold with a temperature of 30°C, let it stand for 60 minutes, and then send it to the drying room Drying: first keep at temperature 40°C and humidity 85% for 9 hours, then adjust the temperature at 60°C and humidity at 73%, keep it at this condition for 6.5 hours, and finally adjust the temperature at 85°C and humidity at 40%. After keeping it for 5.5 hours, the drying can be completed. The dry foamed ceramic green body is demoulded and sent to the kiln for firing. The sintering temperature is 1030°C, the holding time is 1h, and then th...

Embodiment 3

[0034] Put 60kg of red mud and 40kg of waste glass from bottles into a ball mill for wet grinding for 24 hours. After the slurry is weighed, enter the water-bath mixer for stirring. After the temperature of the slurry becomes uniformly 28°C, add 0.4 kg active aluminum powder, after stirring for 3 minutes, add 0.1kg of polyethylene glycol, stir for another 2 minutes, then add 4kg of 1mol / L sodium hydroxide solution, continue stirring for 28s, and then inject the slurry into a mold with a temperature of 27°C , after standing still for 60 minutes, send it to the drying room for drying: first keep it at 36°C and 87% humidity for 10h, then adjust the temperature to 58°C and 75% humidity, keep it at this condition for 7h, then adjust the temperature to 100 ℃, humidity 45%, after 6 hours under this condition, the drying can be completed. The dry foam ceramic green body is demolded and sent to a kiln for firing. The sintering temperature is 1050°C, the holding time is 2 hours, and the...

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Abstract

The invention belongs to the field of building materials, and in particular relates to external wall thermal insulation light foamed ceramic. The light foamed ceramic is prepared by performing wet grinding on 60 to 90 mass parts of industrial solid waste and 10 to 40 mass parts of fluxing material to form slurry, and foaming, wherein the industrial solid waste is one or a mixture of any two or three of coal gangue, metal tailing and red mud in any ratio; and the fluxing material is one or a mixture of any two or three of bottle waste glass, albite and perlite in any ratio. A preparation method comprises the following steps of: mixing the raw materials, grinding, adding active aluminum powder, a foam stabilizer and concentrated hydrochloric acid or a sodium hydroxide solution in turn, stirring, performing foam forming to prepare a foamed ceramic biscuit, feeding into a kiln, firing, naturally cooling, cutting, and inspecting to obtain the external wall thermal insulation light foamed ceramic. The external wall thermal insulation light foamed ceramic has the characteristics of level-A non-inflammability, high thermal insulation and heat preservation performance, energy conservation,environment friendliness and low cost.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a lightweight foamed ceramic for external wall heat preservation and a preparation method thereof. Background technique [0002] External thermal insulation of building exterior walls is an important part of building energy saving, which can account for 30% to 40% of building energy saving. It is realized by putting a thermal insulation coat on the building. Therefore, the development of external insulation materials for exterior walls is also an important link in building energy-saving technology. At present, the mainstream products of external wall insulation materials in China are organic insulation materials such as polystyrene foam board and polystyrene extruded board. The advantages of these organic insulation materials are excellent insulation performance and low price, but there are also fatal flaws, namely They are all combustible materials and pose a fire ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B14/02
Inventor 赵小玻吕宝伟陈达谦王玉宝王振环徐先豹鲍晓芸刘鹏邢政鹏
Owner ZHONGCAI HIGH NEW MATERIAL
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