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High-performance ultra-lightweight foam ceramic prepared by taking shale as main raw material and method thereof

A main raw material, ceramic foam technology, which is applied in the field of preparation of high-performance ultra-light foam ceramic technology, can solve the problems of easy combustion and aging of building external insulation materials, and achieve the goal of improving compressive strength and improving resistance to thermal shock damage effect of ability

Active Publication Date: 2012-07-25
浙江求健科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of existing building external insulation materials such as easy aging and burning, and propose a high-performance ultra-light foam ceramics prepared from shale as the main raw material and its manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] to contain SiO 2 64.2%, Al 2 o 3 19.5%, Fe 2 o 3 7.8%, CaO+MgO 5.4%, K 2 O+Na 2 O 2.8% shale 65%, sandstone 25%, calcite 10%, zircon sand and silicon carbide as the main composition of inorganic composite sintering strengthening additive 0.8%, crushing and mixing, wet ball milling for 16h, spray granulation, and The granulated material is directly laid flat in the assembled refractory castable kiln furniture coated with aluminum silicate fiber cotton felt on the surface of the inner cavity, then scraped flat, and fired at 1180°C in a gas tunnel kiln. The finished product has a bulk density of 0.18 g / cm 3 , thermal conductivity: 0.075W / (m.k), compressive strength: 1.8Mpa, flexural strength: 1.2Mpa, surface adsorption water I Grade, excellent weather resistance and freeze-thaw resistance.

Embodiment 2

[0030] to contain SiO 2 66.2%, Al 2o 3 18.3%, Fe 2 o 3 6.9%, CaO+MgO 6.1%, K 2 O+Na 2 O 2.4% shale 76%, sandstone 20%, dolomite 4%, zirconium silicate and silicon carbide as the main composition of inorganic composite sintering strengthening additive 1.0%, crushing and mixing, wet ball milling for 20h, pressure filtration, drying, Crushed and granulated, the granulated material is directly laid flat in the assembled refractory castable kiln furniture with glass fiber cloth coated with composite refractory material on the inner cavity, then scraped flat, and fired in a fuel tunnel kiln at 1 150 °C Cheng, the finished product bulk density: 0.16g / cm 3 , thermal conductivity: 0.065W / (m.k), compressive strength: 1.5Mpa, flexural strength: 1.0Mpa, surface adsorption water I Grade, excellent weather resistance and freeze-thaw resistance.

Embodiment 3

[0032] to contain SiO 2 72.6%, Al 2 o 3 12.7%, Fe 2 o 3 5.7%, CaO+MgO 5.8%, K 2 O+Na 2 O 3.2% Shale 90%, sandstone 5%, calcite 5%, zirconium silicate and silicon carbide as the main composition of inorganic composite sintering strengthening additive 1.5%, crushing and mixing, dry ball milling for 30 hours, adding water to granulate, and making it The granules are directly laid flat in the assembled refractory castable kiln furniture with glass fiber felt coated with composite refractory material on the surface of the inner cavity, then scraped off, and fired at 1160°C in a gas-fired roller kiln. : 0.15g / cm 3 , thermal conductivity: 0.04W / (m.k), compressive strength: 1.2Mpa, flexural strength: 0.8Mpa, surface adsorption water I Grade, excellent weather resistance and freeze-thaw resistance.

[0033] The product of the present invention can take wet and / or dry fine grinding (such as ball mill, jet mill, Raymond machine, etc.) %.

[0034] The products of the present i...

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Abstract

The invention relates to high-performance ultra-lightweight foam ceramic prepared by taking shale as a main raw material and a method thereof. The high-performance ultra-lightweight foam ceramic comprises the following chemical components in percentage by weight: 50%-70% of SiO2, 10%-20% of Al2O3, 3%-8% of CaO plus MgO, 5%-10% of Fe2O3, 1.0%-6.0% of K2O plus Na2O and 1.0%-2.0% of ZrO2 plus SiC plus C, and the process flow comprises the following steps of preparing materials, performing fine crushing, granulating, loading into an assembled refractory castable kiln tool, striking off, placing into a kiln for firing, getting a product, cutting into the product in the required specification and the size, inspecting, packaging and putting into a warehouse. According to the high-performance ultra-lightweight foam ceramic disclosed by the invention, the defects that the expansion of cracks in the past can affect the product quality, the rupture strength and the compressive strength are not sufficient, the resistance to thermal shock damages is poor and the like, can be solved. According to the high-performance ultra-lightweight foam ceramic disclosed by the invention, compressive stress is generated in a main crack action region for preventing the expansion of the cracks, so that the toughening effect is shown; and by introducing dispersed zirconium oxide particles, the rupture strength and the compressive strength of a composite can be obviously improved, the resistance to the thermal shock damages of the material is also improved, and the optimization of non-renewable resources is further utilized.

Description

technical field [0001] The invention relates to the technical field of aluminum silicate lightweight foam ceramics, in particular to a high-performance ultra-light foam ceramic technology for building wall materials for thermal insulation, energy saving and fireproof products prepared by using shale with extremely extensive resources in my country as the main raw material method of preparation. Background technique [0002] In order to minimize the consumption of natural resources, reuse and purify waste as much as possible, and protect the ecological environment to ensure the sustainable development of human society, it is necessary to strictly limit the destruction of fields and burn bricks. For this reason, thermal insulation, energy saving and fire prevention of building wall materials are on the agenda. [0003] In order to realize the energy saving rate of 50% to 65% in our country's buildings, we must carry out a comprehensive transformation of the building's exterior...

Claims

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Application Information

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IPC IPC(8): C04B38/00
Inventor 金建福金俭
Owner 浙江求健科技有限公司
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