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High fire resistance limit foamed ceramic and preparation method thereof

A technology of refractory limit and foamed ceramics, which is applied in the direction of ceramic products, ceramic material production, clay products, etc., can solve the problems of high zirconia firing temperature, high zirconia price, and increased heat consumption of foamed ceramics. Achieve the effects of lowering the firing temperature, increasing the electric field strength, and improving the fire resistance

Inactive Publication Date: 2019-12-03
FUJIAN DESHENG NEW BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high firing temperature of zirconia, the heat consumption of foamed ceramics is increased, and the price of zirconia is relatively high.

Method used

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  • High fire resistance limit foamed ceramic and preparation method thereof
  • High fire resistance limit foamed ceramic and preparation method thereof
  • High fire resistance limit foamed ceramic and preparation method thereof

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preparation example Construction

[0059] In order to improve the various properties of the foamed ceramics in the present invention, it is also necessary to cooperate with a specific preparation method. Specifically, refer to figure 1 , the preparation method of foam ceramics among the present invention comprises the following steps:

[0060] S1: Mix various raw materials evenly according to the formula to obtain a mixture;

[0061] S2: ball milling the mixture to obtain a slurry;

[0062] Wherein, the fineness of the slurry is 250 mesh sieve <0.5%. It should be noted that in the general production process of foamed ceramics, the fineness is controlled at about 3-5% on a 250-mesh sieve. However, the present invention reduces the content of clay, so by reducing the fineness of the slurry, the suspension of the slurry and the fluidity of the powder after granulation are improved.

[0063] S3: subjecting the slurry to spray granulation to obtain a powder;

[0064] Specifically, after the slurry is stale in th...

Embodiment 1

[0074] This embodiment provides a high refractory limit foamed ceramics, the formula of which is: 90 parts of Luoyuan red tailings, 5 parts of lithium-containing compound, 1 part of black mud, 3 parts of foaming agent, and 1 part of stabilizer;

[0075] Among them, Luoyuan red tailings are composed of the following components: SiO 2 70.0%, Al 2 o 3 14.8%, Fe 2 o 3 1.9%, CaO1.8%, MgO0.4%, K 2 O 5.1%, Na 2 O 3.8%, LOI 2.2%;

[0076] Black mud consists of the following components: SiO 2 64.6%, Al 2 o 3 23.4%, Fe 2 o 3 2.8%, CaO 0.6%, MgO 0.4%, K 2 O 1.7%, Na 2 O 0.3%, LOI 6.2%;

[0077] Among them, lepidolite is selected as the lithium-containing compound, carbon powder is selected as the foaming agent, and manganese dioxide is selected as the stabilizer.

[0078] Its preparation method is:

[0079] (1) According to the formula, various raw materials are mixed uniformly to obtain a mixture;

[0080] (2) ball milling the mixture to obtain a slurry;

[0081] ...

Embodiment 2

[0087] This embodiment provides a high refractory limit foamed ceramics, the formula of which is: 95 parts of Luoyuan red tailings, 1 part of lithitic feldspar, 3 parts of washed mud, 0.5 part of ceramic grinding block reclaimed material, and 0.5 part of manganese dioxide;

[0088] Among them, Luoyuan red tailings are composed of the following components: SiO 2 72.6%, Al 2 o 3 13.2%, Fe 2 o 3 1.3%, CaO0.8%, MgO0.6%, K 2 O 5.4%, Na 2 O 3.5%, LOI 2.6%;

[0089] Washed mud consists of the following components: SiO 2 48.1%, Al 2 o 3 35.9%, Fe 2 o 3 2.4%, CaO 0.02%, MgO 0.42%, K 2 O 2.46%, Na 2 O 0.6%, LOI 10.1%.

[0090] Its preparation method is:

[0091] (1) According to the formula, various raw materials are mixed uniformly to obtain a mixture;

[0092] (2) ball milling the mixture to obtain a slurry;

[0093] Wherein, the fineness of the slurry is 0.3% on a 250-mesh sieve.

[0094] (3) Spray granulating the slurry to obtain powder;

[0095] (4) distribu...

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Abstract

The invention discloses a high fire resistance limit foamed ceramic. The foamed ceramic is mainly prepared by the following raw materials in parts by weight: 90-95 parts of Luoyuan red tailings, 1-5 parts of a lithium compound, 1-3 parts of clay, 0.5-1 part of a foaming agent, and 0.2-1 part of a stabilizer, and the sum of parts by weight of each raw material component is 100 parts, wherein the lithium compound is one or more selected from spodumene, lithium porcelain stone, lithia mica, amblygonite, petalite, lithia mica, and zinnwaldite. The lithium-containing compound is added into the formula, the Li particle has a small radius and large electric field strength, so that the Li particle has the effect of strengthening a network, and thereby a thermal expansion coefficient of the foamedceramic can be reduced, crystallization tendency is reduced, fire resistance of the foamed ceramic can be improved, and application fields of the foamed ceramic is broadened.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic materials, in particular to a high refractory limit foamed ceramic and a preparation method thereof. Background technique [0002] Foamed ceramics is a new type of building material, which has a large number of closed pores inside, so it has the advantages of light heat insulation; at the same time, this foamed ceramics also has the advantages of high compressive strength and low water absorption; existing Most of the foamed ceramics for construction use tile factory polishing waste or other waste (such as granite waste, fly ash, etc.) as the base material, which is conducive to solving the problem of solid waste pollution. Therefore, foamed ceramics have extremely broad application prospects. [0003] From the perspective of mineral phase composition, the foamed ceramic matrix is ​​composed of crystal phase and glass phase, and the matrix also contains a large number of closed bubbles forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/06C04B38/02C04B35/66
CPCC04B33/1324C04B33/131C04B38/068C04B38/02C04B35/66C04B2235/3472C04B2235/3267C04B2235/96C04B2235/9607C04B2235/77C04B38/0067Y02P40/60
Inventor 朱祥辉
Owner FUJIAN DESHENG NEW BUILDING MATERIAL CO LTD
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