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A kind of ultra-light vitrified foam ceramics and preparation method thereof

A foamed ceramic, ultra-light technology, applied in the field of materials to achieve the effects of being conducive to sustainable development, improving compressive strength, and optimizing the ecological environment

Active Publication Date: 2015-12-02
金俭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the advancement of science and technology and the attention of related industries, in recent years, my country has made full use of its own resources and advanced technology to successfully develop the density of 0.6g / cm 3 , 0.5g / cm 3 , 0.4g / cm 3 , 0.3g / cm 3 Even 0.2g / cm 3 Lightweight ceramic foam materials around the world have been partially used in building exterior walls, electric power, chemical industry and other industries, but because of product performance (mainly bulk density and thermal conductivity) and supply and demand and many other factors, they cannot meet the relevant requirements. subject to certain restrictions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] to contain SiO 2 43.5%, Al 2 o 3 16.8%, Fe 2 o 3 12.6%, CaO10.2%, MgO5.5%, TiO 2 2.1%, K 2 O+Na 2 80% of O4.7% basalt contains SiO 2 55.2%, Al 2 o 3 22.1%, Fe 2 o 3 8.3%, CaO+MgO6.5%, K 2 O+Na 2 O3.4% shale 10%, low temperature clay 10%, ZnO (industrial pure) 0.5%, Cr 2 o 3 (Industrial pure) 0.5%, zircon sand and silicon carbide as the main composition of inorganic composite sintering strengthening additive 1%, crushing and mixing, wet ball milling for 16 hours, spray granulation, and directly spread it in the inner cavity to lay the surface coating Assembled high-alumina refractory castable combined kiln furniture with aluminum silicate fiber felt, scraped flat, and fired at 1190°C in a gas-fired tunnel kiln, the finished product has a bulk density of 0.10g / cm 3 , thermal conductivity: 0.049W / (m.k), compressive strength: 1.2Mpa, flexural strength: 0.8Mpa, surface adsorption water <2%, fire rating is A class, excellent freeze-thaw resistance.

Embodiment 2

[0027] to contain SiO 2 55.2%, Al 2 o 3 22.1%, Fe 2 o 3 8.3%, CaO+MgO6.5%, K 2 O+Na 2 O3.4% shale 75%, containing SiO 2 43.5%, Al 2 o 3 16.8%, Fe 2 o 3 12.6%, CaO10.2%, MgO5.5%, TiO 2 2.1%, K 2 O+Na 2 O4.7% basalt 10%, clay 15%, ZnO (industrial pure) 1.5%, Cr 2 o 3 (Industrial pure) 1.5%, zircon sand and silicon carbide as the main composition of inorganic composite sintering strengthening additive 1.5%, crushing and mixing, wet ball milling for 16 hours, spray granulation, and directly spread it in the inner cavity to lay the surface coating Assembled high-alumina refractory castable combined kiln furniture with aluminum silicate fiber felt, scraped flat, and fired at 1180°C in a gas-fired tunnel kiln. The finished product has a bulk density of 0.09g / cm 3 , Thermal conductivity: 0.048W / (m.k), compressive strength: 1.1Mpa, flexural strength: 0.7Mpa, surface adsorption water <2%, fire rating is A class, excellent freeze-thaw resistance.

Embodiment 3

[0029] to contain SiO 2 62.0%, Al 2 o 3 16.3%, Fe 2 o 3 6.8%, CaO+MgO7.2%, K 2 O+Na 2 O4.9% shale 45%, containing SiO 2 47.5%, Al 2 o 3 16.5%, Fe 2 o 3 11.8%, CaO10.1%, MgO4.7%, TiO 2 2.1%, K 2 O+Na 2 O5.4% basalt 30%, low temperature clay 15%, pottery clay 8%, ZnO (industrial pure) 2.5%, Cr 2 o 3 (Industrial pure) 1.5%, zircon sand and silicon carbide as the main composition of inorganic composite sintering strengthening additive 1.2%, dolomite 2%, crushing and mixing, wet ball milling for 16 hours, spray granulation, and spread it directly on the The inner cavity is laid with assembled clay refractory composite kiln furniture coated with aluminum silicate fiber felt, scraped flat, and fired at 1175°C in a gas-fired tunnel kiln. The finished product has a bulk density of 0.088g / cm 3 , thermal conductivity: 0.047W / (m.k), compressive strength: 0.98Mpa, flexural strength: 0.62Mpa, surface adsorption water <2%, fire rating is A class, excellent freeze-thaw resistan...

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PUM

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Abstract

The invention relates to a wallboard material and a preparation method thereof, and particularly relates to vitrified foamed ceramic and a preparation method thereof, belonging to the technical field of materials. According to the vitrified foamed ceramic and the preparation method thereof, non-renewable resources are fully utilized when a high-performance light vitrified foamed ceramic with a volume weight of not more than 0.1g / cm<3> is prepared by using basalt and shale as main raw materials; through adding an inorganic compound sintering additive mainly comprising ZnO, Cr2O3, and zirconium silicate or zircon sand and silicon carbide as main raw materials, a product has the characteristics of volume weight of not more than 0.1g / cm<3>, heat conduction coefficient of not more than 0.05W / (m.k), normal temperature compressive strength of not less than 0.8MPa, normal temperature breaking strength of not less than 0.5MPa, fireproof grade of A grade, and excellent freeze-thaw resistance. The vitrified foamed ceramic has the advantages of comprehensively utilizing widespread poor raw materials, and simplifying a manufacturing procedure, and is more suitable for heat insulation of a building wallboard and heat insulation of thermal equipment and pipelines in industries such as power, petroleum, chemical engineering, smelting, traffics, light industry, and national defense industry, as well as heat (cold) insulation projects of a chimney inner wall and a kiln housing.

Description

technical field [0001] The invention relates to a wall material and a preparation method thereof, in particular to an ultra-light vitrified foam ceramic and a preparation method thereof, belonging to the field of material technology. Background technique [0002] In order to minimize the consumption of natural resources and energy, protect the ecological environment, and ensure the sustainable development of human society, heat insulation, energy saving and consumption reduction, safety and fire prevention, and environment optimization have become more and more hot spots and priorities of today's attention. Taking my country's building wall materials as an example, in 2005 the General Office of the State Council issued Guobanfa [2005] No. 33 document "Notice on Further Promoting Wall Material Innovation and Promotion of Energy-saving Buildings", actively encouraging the development and Promotion and utilization. To achieve an energy-saving rate of 50% to 65%, it is necessary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B35/16C04B35/622
Inventor 金建福金俭
Owner 金俭
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