CN106116601A - A kind of preparation method of lightness refractory aggregate - Google Patents

A kind of preparation method of lightness refractory aggregate Download PDF

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CN106116601A
CN106116601A CN201610484297.2A CN201610484297A CN106116601A CN 106116601 A CN106116601 A CN 106116601A CN 201610484297 A CN201610484297 A CN 201610484297A CN 106116601 A CN106116601 A CN 106116601A
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mixed
refractory
lightness
refractory aggregate
whisker
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郭舒洋
薛培龙
孟浩影
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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Abstract

The present invention relates to the preparation method of a kind of lightness refractory aggregate, belong to refractory aggregate preparing technical field.After tephre lava, Muscovitum are mainly pulverized by the present invention, mix with hydrogen peroxide, obtain Pretreatment Mixed Liauid, after it being mixed homogeneously with the material such as kieselguhr, polycrystalline mullite fibre again, obtain mixed slurry, after then alumina whisker, zirconium oxide whisker, magnesia crystal whisker carry out ball milling mixing, mix with mixed slurry, add the mixing of the material such as aluminium silicate, expanded vermiculite, obtain plastic refractory, finally carried out calcining, cool down, pulverize and i.e. can get lightness refractory aggregate.Lightness refractory aggregate intensity prepared by the present invention is higher, and compressive resistance reaches more than 650MPa；High temperature resistant degree reaches more than 1650 DEG C.

Description

A kind of preparation method of lightness refractory aggregate
Technical field
The present invention relates to the preparation method of a kind of lightness refractory aggregate, belong to refractory aggregate preparing technical field.
Background technology
The temperature of the inside of the device etc. that fusing stove etc. uses under the high temperature conditions is the highest, if directly radiating heat into Outside, workability, efficiency can become excessively poor, cover the outside of fusing stove hence with refractory body, to prevent inside Heat is delivered to outside.As the raw material of this refractory body, use the aggregate of fire resistance as main component.Refractory aggregate is to determine The composition of the fire resistance of refractory body and intensity etc., from the viewpoint of seeking the raising of thermal insulation, lightness further, always Use hollow refractory aggregate.
This kind of hollow refractory aggregate generally uses electric smelting method or sintering process manufacture, in recent years, purity is 99 mass % This raw material also at commercial type, is used as refractory body raw material by the hollow light-duty Ceramic Material that above aluminium oxide is constituted.But, The heat conductivity of the material of the ceramic hollow particle being made up of aluminium oxide itself is higher, therefore realizes sufficient low heat conduction wanting In the case of characteristic, need to reduce the thickness of hollow bead, thus there is the problems such as intensity declines, granule easily splits.It addition, The usual granularity of ceramic hollow particle being made up of zirconium oxide not of uniform size, price is the highest, and bulk density is also big, is seldom used as Adiabator, the raw material as zirconium oxide composition is often used as refractory body etc..These zirconic mineral are baddeleyites, 1100 Changing at a temperature of about DEG C, thus structure changes, therefore when applying temperature change, granule chaps, as knot The intensity of structure body declines, so being difficult to be directly used as the composition granule of refractory body.
Summary of the invention
The technical problem to be solved: for the hollow ceramic prepared for primary raw material with aluminium oxide or zirconium oxide Refractory aggregate intensity is low, easily chaps, and is difficult to the problem directly applying to fusing outside stove, and the present invention is mainly volcano is broken After bits lava, Muscovitum are pulverized, mix with hydrogen peroxide, obtain Pretreatment Mixed Liauid, then by itself and kieselguhr, polycrystalline mullite fibre After material mix homogeneously, obtaining mixed slurry, then alumina whisker, zirconium oxide whisker, magnesia crystal whisker carry out ball milling and mix After conjunction, mix with mixed slurry, add the mixing of the material such as aluminium silicate, expanded vermiculite, obtain plastic refractory, finally carried out Calcine, cool down, pulverize and i.e. can get lightness refractory aggregate.Lightness refractory aggregate intensity prepared by the present invention is higher, is difficult to Chap, and its resistance to fire intensity is big.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) weigh 20～30g tephre lava, 5～10g Muscovitum, after being mixed uniformly, be placed in pulverizer and pulverize And sieve, obtain 100～200 mesh mixed-powders, mixed-powder is added to beaker, then in beaker, add 300～400mL Mass concentration is 30～32% hydrogen peroxide solution, is placed in by beaker in 180～220W sonic oscillation instrument, sonic oscillation 24～26h, Obtain Pretreatment Mixed Liauid；
(2) Pretreatment Mixed Liauid obtained above is joined in 10000～12000rpm blenders, sequentially add 5～10g Kieselguhr, 10～20g polycrystalline mullite fibre, 3～5g foam glass, high-speed stirred 10～20min, obtain mixed slurry；
(3) weigh 3～5g alumina whiskers, 3～5g zirconium oxide whisker, 3～5g magnesia crystal whisker successively, join ball mill In, add 100～200mL deionized waters, use zirconium ball to carry out ball milling 2～3h, obtain blending whisker material, by blending whisker material Join in above-mentioned mixed slurry, be sequentially added into 2～4g aluminium silicate, 2～3g expanded vermiculite, 2～3g perlite, high-speed stirred 20 ～30min, obtain plastic refractory；
(4) being joined by above-mentioned plastic refractory being squeezed into thickness in roller extruder is 0.3～0.5mm tablet, by tablet It is placed in Muffle furnace, at 800～900 DEG C, calcines 10～12h, then naturally cool to room temperature, by the refractory aggregate powder after cooling Broken, sieve, obtain 100～200 mesh refractory aggregates, i.e. a kind of lightness refractory aggregate.
Lightness refractory aggregate compressive resistance prepared by the present invention reaches more than 650MPa, apparent porosity be 4.2～ 7.5%, bulk density is 3.15g cm-3, high temperature resistant degree reaches more than 1650 DEG C.
The present invention is compared with additive method, and Advantageous Effects is:
(1) the lightness refractory aggregate intensity that prepared by the present invention is higher, and compressive resistance reaches more than 650MPa；
(2) the high temperature resistant degree of lightness refractory aggregate that prepared by the present invention reaches more than 1650 DEG C；
(3) preparation process of the present invention is simple, required low cost.
Detailed description of the invention
First weigh 20～30g tephre lava, 5～10g Muscovitum, after being mixed uniformly, be placed in pulverizer Row is pulverized and sieves, and obtains 100～200 mesh mixed-powders, is added to beaker by mixed-powder, then adds 300 in beaker ～400mL mass concentration is 30～32% hydrogen peroxide solution, beaker is placed in 180～220W sonic oscillation instrument, sonic oscillation 24 ～26h, obtain Pretreatment Mixed Liauid；Pretreatment Mixed Liauid obtained above is joined 10000～12000rpm blenders again In, sequentially add 5～10g kieselguhr, 10～20g polycrystalline mullite fibre, 3～5g foam glass, high-speed stirred 10～ 20min, obtains mixed slurry；Weigh 3～5g alumina whiskers, 3～5g zirconium oxide whisker, 3～5g magnesium oxide the most successively brilliant Must, join in ball mill, add 100～200mL deionized waters, use zirconium ball to carry out ball milling 2～3h, obtain blending whisker Material, joins blending whisker material in above-mentioned mixed slurry, is sequentially added into 2～4g aluminium silicate, 2～3g expanded vermiculite, 2～3g precious Zhu Yan, high-speed stirred 20～30min, obtain plastic refractory；Finally above-mentioned plastic refractory is joined and extrude in roller extruder Becoming thickness is 0.3～0.5mm tablet, is placed in Muffle furnace by tablet, calcining 10～12h at 800～900 DEG C, then from So it is cooled to room temperature, the refractory aggregate after cooling is pulverized, sieves, obtain 100～200 mesh refractory aggregates, i.e. a kind of lightness Refractory aggregate.
Example 1
First weigh 30g tephre lava, 10g Muscovitum, after being mixed uniformly, be placed in pulverizer and carry out pulverizing and mistake Sieve, obtains 200 mesh mixed-powders, is added to beaker by mixed-powder, then addition 400mL mass concentration is 32% in beaker Hydrogen peroxide solution, is placed in beaker in 220W sonic oscillation instrument, sonic oscillation 26h, obtains Pretreatment Mixed Liauid；Obtain above-mentioned again To Pretreatment Mixed Liauid join in 12000rpm blender, sequentially add 10g kieselguhr, 20g polycrystalline mullite fibre, 5g foam glass, high-speed stirred 20min, obtain mixed slurry；Weigh the most successively 5g alumina whisker, 5g zirconium oxide whisker, 5g magnesia crystal whisker, joins in ball mill, adds 100～200mL deionized waters, uses zirconium ball to carry out ball milling 3h, obtains Blending whisker material, joins blending whisker material in above-mentioned mixed slurry, is sequentially added into 4g aluminium silicate, 3g expanded vermiculite, 3g treasure Zhu Yan, high-speed stirred 30min, obtain plastic refractory；Finally above-mentioned plastic refractory is joined and be squeezed into thickness in roller extruder Degree is 0.5mm tablet, is placed in Muffle furnace by tablet, calcines 12h, then naturally cool to room temperature at 900 DEG C, will cooling After refractory aggregate pulverize, sieve, obtain 200 mesh refractory aggregates, i.e. a kind of lightness refractory aggregate.After testing, system of the present invention Standby lightness refractory aggregate compressive resistance reaches 652MPa, and apparent porosity is 7.5%, and bulk density is 3.15g cm-3, resistance to High-temperature reaches 1655 DEG C.
Example 2
First weigh 20g tephre lava, 5g Muscovitum, after being mixed uniformly, be placed in pulverizer and pulverize and sieve, Obtain 100 mesh mixed-powders, mixed-powder is added to beaker, then addition 300mL mass concentration is 30% dioxygen in beaker Aqueous solution, is placed in beaker in 180W sonic oscillation instrument, sonic oscillation 24h, obtains Pretreatment Mixed Liauid；Again by obtained above Pretreatment Mixed Liauid joins in 10000rpm blender, sequentially adds 5g kieselguhr, 10g polycrystalline mullite fibre, 5g bubble Foam glass, high-speed stirred 20min, obtain mixed slurry；Weigh 5g alumina whisker, 5g zirconium oxide whisker, 5g oxygen the most successively Change magnesium whisker, join in ball mill, add 200mL deionized water, use zirconium ball to carry out ball milling 3h, obtain blending whisker Material, joins blending whisker material in above-mentioned mixed slurry, is sequentially added into 4g aluminium silicate, 3g expanded vermiculite, 3g perlite, at a high speed Stirring 30min, obtains plastic refractory；Finally being joined by above-mentioned plastic refractory being squeezed into thickness in roller extruder is 0.5mm Tablet, is placed in tablet in Muffle furnace, calcines 12h, then naturally cool to room temperature at 900 DEG C, will fire-resistant after cooling Aggregate is pulverized, and sieves, and obtains 200 mesh refractory aggregates, i.e. a kind of lightness refractory aggregate.After testing, what prepared by the present invention is light-duty Changing refractory aggregate compressive resistance and reach more than 660MPa, apparent porosity is 5.2%, and bulk density is 3.15g cm-3, high temperature resistant Degree reaches 1660 DEG C.
Example 3
First weigh 25g tephre lava, 7g Muscovitum, after being mixed uniformly, be placed in pulverizer and pulverize and sieve, Obtain 150 mesh mixed-powders, mixed-powder is added to beaker, then addition 350mL mass concentration is 31% dioxygen in beaker Aqueous solution, is placed in beaker in 190W sonic oscillation instrument, sonic oscillation 25h, obtains Pretreatment Mixed Liauid；Again by obtained above Pretreatment Mixed Liauid joins in 11000rpm blender, sequentially adds 7g kieselguhr, 15g polycrystalline mullite fibre, 4g bubble Foam glass, high-speed stirred 15min, obtain mixed slurry；Weigh 4g alumina whisker, 4g zirconium oxide whisker, 4g oxygen the most successively Change magnesium whisker, join in ball mill, add 150mL deionized water, use zirconium ball to carry out ball milling 3h, obtain blending whisker Material, joins blending whisker material in above-mentioned mixed slurry, is sequentially added into 3g aluminium silicate, 3g expanded vermiculite, 2g perlite, at a high speed Stirring 25min, obtains plastic refractory；Finally being joined by above-mentioned plastic refractory being squeezed into thickness in roller extruder is 0.4mm Tablet, is placed in tablet in Muffle furnace, calcines 11h, then naturally cool to room temperature at 850 DEG C, will fire-resistant after cooling Aggregate is pulverized, and sieves, and obtains 120 mesh refractory aggregates, i.e. a kind of lightness refractory aggregate.After testing, what prepared by the present invention is light-duty Changing refractory aggregate compressive resistance and reach more than 657MPa, apparent porosity is 5.2%, and bulk density is 3.15g cm-3, high temperature resistant Degree reaches 1654 DEG C.

Claims (1)

1. the preparation method of a lightness refractory aggregate, it is characterised in that concrete preparation process is:
(1) weigh 20～30g tephre lava, 5～10g Muscovitum, after being mixed uniformly, be placed in pulverizer and pulverize And sieve, obtain 100～200 mesh mixed-powders, mixed-powder is added to beaker, then in beaker, add 300～400mL Mass concentration is 30～32% hydrogen peroxide solution, is placed in by beaker in 180～220W sonic oscillation instrument, sonic oscillation 24～26h, Obtain Pretreatment Mixed Liauid；
(2) Pretreatment Mixed Liauid obtained above is joined in 10000～12000rpm blenders, sequentially add 5～10g Kieselguhr, 10～20g polycrystalline mullite fibre, 3～5g foam glass, high-speed stirred 10～20min, obtain mixed slurry；
(3) weigh 3～5g alumina whiskers, 3～5g zirconium oxide whisker, 3～5g magnesia crystal whisker successively, join ball mill In, add 100～200mL deionized waters, use zirconium ball to carry out ball milling 2～3h, obtain blending whisker material, by blending whisker material Join in above-mentioned mixed slurry, be sequentially added into 2～4g aluminium silicate, 2～3g expanded vermiculite, 2～3g perlite, high-speed stirred 20 ～30min, obtain plastic refractory；
(4) being joined by above-mentioned plastic refractory being squeezed into thickness in roller extruder is 0.3～0.5mm tablet, by tablet It is placed in Muffle furnace, at 800～900 DEG C, calcines 10～12h, then naturally cool to room temperature, by the refractory aggregate powder after cooling Broken, sieve, obtain 100～200 mesh refractory aggregates, i.e. a kind of lightness refractory aggregate.
CN201610484297.2A 2016-06-28 2016-06-28 A kind of preparation method of lightness refractory aggregate Withdrawn CN106116601A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110040995A (en) * 2019-04-22 2019-07-23 瑞泰科技股份有限公司 A kind of high temperature lightweight toughness mullite aggregate preparation method
CN113816680A (en) * 2021-09-25 2021-12-21 成都新豪鼎盛建材有限公司 Fair-faced concrete and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110040995A (en) * 2019-04-22 2019-07-23 瑞泰科技股份有限公司 A kind of high temperature lightweight toughness mullite aggregate preparation method
CN110040995B (en) * 2019-04-22 2021-10-08 瑞泰科技股份有限公司 Preparation method of high-temperature light tough mullite aggregate
CN113816680A (en) * 2021-09-25 2021-12-21 成都新豪鼎盛建材有限公司 Fair-faced concrete and preparation method thereof

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Application publication date: 20161116