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Mullite lightweight fireproof material and preparation method thereof

A lightweight refractory material, mullite technology, applied in the field of refractory material manufacturing, can solve the problems of poor wear resistance, low mechanical strength, and can not be used for load bearing, etc., to achieve low volume density, large porosity, high pressure resistance The effect of intensity

Inactive Publication Date: 2017-02-08
CHANGXING SHENGHUA REFRACTORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lightweight refractory materials also have low mechanical strength, cannot be used for load bearing, and their wear resistance is also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A mullite lightweight refractory material is prepared from the following raw materials in parts by weight: 660 parts of aluminum oxide, 180 parts of silicon oxide, 72 parts of calcium oxide, 54 parts of magnesium oxide, 27 parts of titanium oxide, and 10 parts of calcium carbonate. Pore ​​agent 300 parts;

[0030] Wherein, the pore forming agent is composed of the following raw materials in parts by weight: 20 parts of sucrose, 40 parts of carbon powder, 40 parts of polyethylene microspheres, 50 parts of diatomaceous earth, and 40 parts of copper sulfate pentahydrate.

[0031] A preparation method of mullite lightweight refractory material, comprising the following steps:

[0032] a) Add anhydrous ethanol twice the weight of the raw materials except the pore-forming agent to the raw materials except the pore-forming agent, ball mill at a speed of 2000rpm for 4 hours, then add the pore-forming agent to it, and ball mill at a speed of 1000rpm 1 hour, finally dry;

[003...

Embodiment 2

[0037] A mullite lightweight refractory material is prepared from the following raw materials in parts by weight: 685 parts of aluminum oxide, 195 parts of silicon oxide, 80 parts of calcium oxide, 60 parts of magnesium oxide, 32 parts of titanium oxide, and 15 parts of calcium carbonate. 400 parts of pore agent;

[0038] Wherein, the pore forming agent is composed of the following raw materials in parts by weight: 20 parts of sucrose, 50 parts of carbon powder, 60 parts of polyethylene microspheres, 55 parts of diatomaceous earth, and 45 parts of copper sulfate pentahydrate.

[0039] A preparation method of mullite lightweight refractory material, comprising the following steps:

[0040] a) Add 2.2 times the weight of absolute ethanol to the raw materials except the pore-forming agent, ball mill at a speed of 2200rpm for 5 hours, then add the pore-forming agent to it, and ball mill at a speed of 1100rpm 1.5 hours, finally dry;

[0041] b) Molding the raw material processed in...

Embodiment 3

[0045] A mullite lightweight refractory material is prepared from the following raw materials in parts by weight: 710 parts of aluminum oxide, 210 parts of silicon oxide, 90 parts of calcium oxide, 72 parts of magnesium oxide, 36 parts of titanium oxide, and 20 parts of calcium carbonate. 500 parts of pore agent;

[0046] Wherein, the pore forming agent is composed of the following raw materials in parts by weight: 20 parts of sucrose, 60 parts of carbon powder, 80 parts of polyethylene microspheres, 60 parts of diatomite, and 50 parts of copper sulfate pentahydrate.

[0047] A preparation method of mullite lightweight refractory material, comprising the following steps:

[0048] a) Add absolute ethanol 2.5 times the weight of the raw materials except the pore-forming agent to the raw materials except the pore-forming agent, ball mill at a speed of 2500rpm for 6 hours, then add the pore-forming agent to it, and ball mill at a speed of 1200rpm 2 hours, finally dry;

[0049] b...

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Abstract

The invention discloses a mullite lightweight fireproof material and a preparation method thereof. The mullite lightweight fireproof material is prepared from alumina, calcium oxide, calcium oxide, magnesium oxide, titanium oxide, calcium carbonate, and a pore-foaming agent, wherein the pore-foaming agent is composed of cane sugar, carbon powder, polyethylene microsphere, diatomite, and copper sulfate pentahydrate. The fireproof material is prepared by the following steps: ball milling, wet mixing, moulding, sintering, and a post treatment. The provided mullite lightweight fireproof material has the advantages of low volume density, large porosity, high using temperature, high compression strength, low thermal conductivity, and good thermal insulation effect.

Description

technical field [0001] The invention relates to the technical field of refractory material manufacture, in particular to a mullite lightweight refractory material and a preparation method thereof. Background technique [0002] In the traditional sense, refractory materials refer to inorganic non-metallic materials with a refractoriness of not less than 1580 °C. And parts of the material, and can withstand the corresponding physical and chemical changes and mechanical action. [0003] Most refractory materials are made of natural ores (such as refractory clay, silica, magnesite, dolomite), and some industrial raw materials and synthetic raw materials (such as industrial alumina, silicon carbide, synthetic mullite, Synthetic spinel, etc.) are also increasing, so there are many types of refractory materials. According to the mineral composition, refractories can be divided into silica, aluminum silicate, magnesia, dolomite, olivine, spinel, carbonaceous, zirconium-containing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B38/08C04B35/66C04B35/185C04B35/626C04B35/64C04B41/91
CPCC04B38/08C04B35/185C04B35/6261C04B35/64C04B35/66C04B38/02C04B41/5353C04B41/91C04B2235/3206C04B2235/3208C04B2235/3232C04B2235/3281C04B2235/656C04B2235/77C04B2235/96C04B2235/9607C04B38/0074C04B38/0067
Inventor 佘培华佘文浩
Owner CHANGXING SHENGHUA REFRACTORIES CO LTD
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