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Foamed ceramic and preparation method thereof

A technology of foam ceramics and silt, applied in the field of foam ceramics and its preparation, can solve the problems of mechanical strength and high porosity, and achieve a balance between flexural strength and porosity, high porosity, and strong gas sealing ability Effect

Pending Publication Date: 2022-02-08
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the foamed ceramics prepared by using solid waste and low value-added minerals in the prior art are difficult to balance better mechanical strength and higher porosity, thereby providing a Ceramic foam and preparation method thereof

Method used

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  • Foamed ceramic and preparation method thereof
  • Foamed ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a kind of foamed ceramics, including the following raw materials: 75g of silty shale, 10g of fly ash, 15g of steel slag, 0.2g of silicon carbide; the particle size of the silty shale is 80 mesh, and the The particle size is 100 mesh, the particle size of steel slag is 100 mesh, and the particle size of silicon carbide is 700 mesh; in terms of mass percentage, the composition of the silty shale includes 67.79% SiO 2 , 8.52% CaO, 7.64% Al 2 o 3 , 3.28% Fe 2 o 3 , 1.66% MgO, 1.37% K 2O; In terms of mass percentage, the composition of fly ash includes 45.10% SiO 2 , 23.89%Al 2 o 3 , 12.86% Fe 2 o 3 , 3.33% CaO, 1.72% K 2 O, 1.60% Na 2 O, 1.29% MgO; in terms of mass percentage, the composition of steel slag includes 42.25% CaO, Fe 2 o 3 +FeO25.14%, 15.60%SiO 2 , 7.07% MgO, 1.80% Al 2 o 3 .

[0033] The preparation method of above-mentioned ceramic foam comprises the steps:

[0034] (1) Mix silty shale, fly ash, steel slag, and silico...

Embodiment 2

[0038] This embodiment provides a kind of foamed ceramics, including the following raw materials: 70g of silty shale, 17g of fly ash, 13g of steel slag, 0.2g of silicon carbide; the particle size of the silty shale is 150 mesh, and the The particle size is 150 mesh, the particle size of steel slag is 150 mesh, and the particle size of silicon carbide is 700 mesh; in terms of mass percentage, the composition of the silty shale includes 67.79% SiO 2 , 8.52% CaO, 7.64% Al 2 o 3 , 3.28% Fe 2 o 3 , 1.66% MgO, 1.37% K 2 O; In terms of mass percentage, the composition of fly ash includes 45.10% SiO 2 , 23.89%Al 2 o 3 , 12.86% Fe 2 o 3 , 3.33% CaO, 1.72% K 2 O, 1.60% Na 2 O, 1.29% MgO; in terms of mass percentage, the composition of steel slag includes 42.25% CaO, Fe 2 o 3 +FeO25.14%, 15.60%SiO 2 , 7.07% MgO, 1.80% Al 2 o 3 .

[0039] The preparation method of above-mentioned ceramic foam comprises the steps:

[0040] (1) Mix silty shale, fly ash, steel slag, and sili...

Embodiment 3

[0043] This embodiment provides a kind of foamed ceramics, including the following raw materials: 65g of silty shale, 18g of fly ash, 17g of steel slag, 0.3g of silicon carbide; the particle size of the silty shale is 100 mesh, and the The particle size is 100 mesh, the particle size of steel slag is 100 mesh, and the particle size of silicon carbide is 700 mesh; in terms of mass percentage, the composition of the silty shale includes 67.79% SiO 2 , 8.52% CaO, 7.64% Al 2 o 3 , 3.28% Fe 2 o 3 , 1.66% MgO, 1.37% K 2 O; In terms of mass percentage, the composition of fly ash includes 45.10% SiO 2 , 23.89%Al 2 o 3 , 12.86% Fe 2 o 3 , 3.33% CaO, 1.72% K 2 O, 1.60% Na 2 O, 1.29% MgO; in terms of mass percentage, the composition of steel slag includes 42.25% CaO, Fe 2 o 3 +FeO25.14%, 15.60%SiO 2 , 7.07% MgO, 1.80% Al 2 o 3 .

[0044] The preparation method of above-mentioned ceramic foam comprises the steps:

[0045] (1) Mix silty shale, fly ash, steel slag, and sili...

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Abstract

The invention relates to the technical field of ceramic materials, in particular to foamed ceramic and a preparation method thereof. The foamed ceramic provided by the invention is prepared from the following raw materials in parts by weight: 60 to 79 parts of silty shale, 1 to 20 parts of fly ash, 13 to 20 parts of steel slag and 0.2 to 0.5 part of silicon carbide. The foamed ceramic provided by the invention has relatively good mechanical strength and relatively high porosity.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a foam ceramic and a preparation method thereof. Background technique [0002] Ceramic foam is a new type of green porous ceramic material, which has excellent properties such as light weight, heat insulation, low thermal conductivity, corrosion resistance, wear resistance, etc. It is often used in thermal insulation materials, filter materials, catalyst carriers, construction and other fields . [0003] Shale is a kind of sedimentary rock formed by depositing clay material through pressure, dehydration, recrystallization, etc. Its main mineral composition is kaolinite, quartz, feldspar, etc. Shale contains a lot of SiO 2 And flux oxides, and the chemical composition is relatively stable. Fly ash is one of the solid wastes with a large amount of discharge at present. At present, the application technology of fly ash is mainly used in cement and concrete aggregates, b...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B35/14C04B35/622C04B33/04C04B33/135C04B33/138
CPCC04B38/02C04B35/14C04B35/62204C04B33/04C04B33/138C04B33/1352C04B35/565Y02P40/60
Inventor 梁健戚芳江伟辉劳新斌苗立锋江峰
Owner JINGDEZHEN CERAMIC INSTITUTE
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