CN102976771B - High temperature resistant lightweight heat insulation castables - Google Patents
High temperature resistant lightweight heat insulation castables Download PDFInfo
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- CN102976771B CN102976771B CN201210462846.8A CN201210462846A CN102976771B CN 102976771 B CN102976771 B CN 102976771B CN 201210462846 A CN201210462846 A CN 201210462846A CN 102976771 B CN102976771 B CN 102976771B
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Abstract
Disclosed is high temperature resistant lightweight heat insulation castables. Substrate raw materials and the weight percentage are as follows: 53-60% of main substrate particles with the average particle size less than or equal to 7 millimeters, 25-32% of main substrate fine powder which can pass through a target screen mesh not less than 200, 5-10% of ultrafine powder with the average particle size less than or equal to 10 microns, and 6-7% of aluminate cement. The sum of the weight of the substrate raw materials is an entirety, compound water-reducing agents need to be added besides the substrate raw materials, and the weight of the compound water-reducing agents is 0.1-1% of that of the entirety. Besides the substrate raw materials, polystyrene spheres need to be added, the average particle size of the polystyrene spheres is 1-0.5 millimeter, and the weight of the polystyrene spheres is 1-3% of that of the entirety. The high temperature resistant lightweight heat insulation castables can be used as working lining of a thermal furnace which does not contact with molten liquid, the use temperature is from 1250-1650 DEG C according to different main substrates, and the volume density of the high temperature resistant lightweight heat insulation castables can be 1.2-1.7g/cm<3> by adding burning articles with different quantities.
Description
Technical field
The present invention relates to technical field of refractory materials, especially relate to a kind of high temperature resistant adiabatic mould material of burning lost article of adding.
Background technology
General light thermal insulation mould material is to utilize aglite as the gathering materials of mould material, and makees bonding agent with aluminate cement.Aglite has waste light brick sand, haydite, perlite and alumina hollow ball, wherein waste light brick sand, haydite, perlite class light thermal insulation mould material can be according to regulating working conditions production method, be prepared into the mould material of various volume densities, be lining with and be widely used at the not too high thermotechnical furnace of temperature, as the oil refining lining material of petrochemical complex, but just can not use as working lining in the Thermal Equipment of some temperature higher (1250 DEG C of >), this is because in the very high Thermal Equipment of temperature, as metal melting equipment, this type of material is difficult to meet service requirements as thermofin.Alumina hollow ball is as the light thermal insulation mould material of aglite, and volume density can be controlled at 1.5 ~ 1.7g/cm
3, can be applicable to use in the Thermal Equipment of comparatively high temps, but this type of high temperature resistant mould material thermal shock resistance to be poor, thermal conductivity is to be again difficult to meet the demands, workability is poor, and expensive.
Utilize burning mistake method production definition thermal insulation material to be grasped very early, if volume density is at 0.5 ~ 1.5g/cm
3, refractory temperature turns etc. at 1250 ~ 1650 DEG C of poly-hydrogen mullite insulating fire bricks, the lightweight corundum that utilizes oil incipient scorch to lose, burn mistake method and produce the adiabatic mould material of heat-resistant light and be not mentioned but utilize.
Summary of the invention
The problems referred to above that exist for prior art, the applicant provides a kind of heat-resistant light adiabatic mould material.This mould material can be used as the thermal kiln furnace working lining that does not contact melt liquid, and use temperature is according to the difference of main base material from 1250 ~ 1650 DEG C, and by adding the burning lost article of different amounts, the adiabatic mould material volume density of this heat-resistant light can be 1.2 ~ 1.7g/cm
3.
Technical scheme of the present invention is as follows:
The adiabatic mould material of a kind of heat-resistant light, base material raw material and weight percent thereof are:
Main substrate particles: mean particle size≤7mm, 53 ~ 60%;
Main base material fine powder: can cross and be not less than 200 object screen clothes, 25 ~ 32%;
Ultrafine powder: mean particle size≤10 μ m, 5 ~ 10%;
Aluminate cement: 6 ~ 7%;
The weight sum of above-mentioned base material raw material is as a whole, outside above-mentioned base material raw material, will add composite water-reducing agent, and weight is described overall weight 0.1 ~ 1%; Outside above-mentioned base material raw material, will add polystyrene spheres, mean particle size is 1 ~ 0.5mm, and weight is described overall weight 1 ~ 3%;
Described main base material can be at least one of flint clay, kyanite, bauxitic clay grog, mullite or corundum;
Described ultrafine powder is Reactive alumina or active SILICA FUME.
The adiabatic mould material of this heat-resistant light is concrete preparation method mix above-mentioned each raw material to stir.Described aluminate cement is selected high-alumina cement or aluminous cement.
The technique effect that the present invention is useful is:
The present invention utilizes to burn the adiabatic mould material of mistake method production heat-resistant light, its ultimate principle is to regulate grain composition in the various refractory castablies of original tested recipe, and add a certain amount of burning lost article (polystyrene spheres), burn the add-on of lost article by adjusting, on the mobility basis that ensures original formula mould material, meet workability, form the light thermal insulation mould material of different volumes density and heat-proof quality.After this mould material casting, in the process of baker, burn lost article and burn mistake, thereby cause porous, except volume density declines, other fundamental propertys of material are constant.
When mould material use temperature is not during higher than 1350 DEG C, main base material can be flint clay, conventional aluminium bauxite clinker; When mould material use temperature is during higher than 1350 DEG C, main base material can be superfine bauxitic clay grog, mullite or corundum.
Embodiment
embodiment 1
Manufacture the molten aluminium stove bell working lining (ρ=1.3g/cm of a kind of aluminum products company
3), its bell long term operation temperature is 1000 ~ 1300 DEG C of fluctuations, and the raw material using and each raw material weight are as shown in table 1, and each raw material in table is mixed.
Table 1
embodiment 2
Manufacture a kind of adiabatic mould material (ρ=1.5g/cm of cupola forehearth bell high-alumina lightening of Foundry Inc.
3), its bell long term operation temperature-stable is at 1450 DEG C, and the raw material using and each raw material weight are as shown in table 2, and each raw material in table is mixed.
Table 2
embodiment 3
Manufacture a kind of ethane cracking furnace corundum light thermal insulation mould material (ρ=1.2g/cm of petro-chemical corporation
3), its long term operation temperature-stable, at 1350 DEG C, requires material SiO
2content ≯ 0.2%, the raw material using and each raw material weight are as shown in table 3, and each raw material in table is mixed.
Table 3
Claims (2)
1. the adiabatic mould material of heat-resistant light, is characterized in that: raw material and weight thereof are as follows:
The concrete material granule degree of raw material weight kg
The superfine bauxitic clay grog of main substrate particles 7 ~ 5mm 15
Superfine bauxitic clay grog 5 ~ 3mm 20
Superfine bauxitic clay grog 3 ~ 1mm 15
Superfine bauxitic clay grog 1 ~ 0mm 10
The superfine bauxitic clay grog of main base material fine powder is crossed 200 mesh sieves 23
Kyanite is crossed 280 mesh sieves 5
Active SILICA FUME≤5 μ the m 5 of ultrafine powder
Aluminate cement aluminous cement 75 types 7
The super dispersant B NK-NSF32000 0.15 of composite water-reducing agent
Polystyrene spheres 1 ~ 0.5mm 1.0.
2. the adiabatic mould material of heat-resistant light according to claim 1, is characterized in that concrete preparation method mixes above-mentioned each raw material to stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462846.8A CN102976771B (en) | 2012-11-16 | 2012-11-16 | High temperature resistant lightweight heat insulation castables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462846.8A CN102976771B (en) | 2012-11-16 | 2012-11-16 | High temperature resistant lightweight heat insulation castables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102976771A CN102976771A (en) | 2013-03-20 |
| CN102976771B true CN102976771B (en) | 2014-10-22 |
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| CN201210462846.8A Active CN102976771B (en) | 2012-11-16 | 2012-11-16 | High temperature resistant lightweight heat insulation castables |
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| CN103319186B (en) * | 2013-05-24 | 2014-12-17 | 霍山县新裕炉窑模具有限公司 | Aluminum melting furnace cast refractory material and preparation method thereof |
| CN103803993B (en) * | 2014-01-08 | 2015-09-09 | 长兴明晟冶金炉料有限公司 | Corundum gravity flow pouring material |
| CN103936449B (en) * | 2014-04-23 | 2016-03-30 | 武汉钢铁(集团)公司 | A kind of high strength microdilatancy lagging material |
| CN104193354B (en) * | 2014-08-08 | 2016-03-02 | 上海利尔耐火材料有限公司 | A kind of tundish permanent layer mould material and preparation method thereof |
| CN104311086A (en) * | 2014-10-28 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Light magnesium slag refractory castable |
| CN104944898A (en) * | 2015-06-24 | 2015-09-30 | 陈威宇 | High-performance light castable |
| CN105130459B (en) * | 2015-07-11 | 2017-09-19 | 郑州汇特耐火材料有限公司 | The unburned prefabricated syphon of aluminium anode carbon baking furnace flue wall |
| CN105503216B (en) * | 2015-12-24 | 2019-04-12 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of preparation method of high-strength light alumina hollow ball product |
| CN106045353B (en) * | 2016-05-31 | 2018-12-07 | 无锡锡能锅炉有限公司 | High-temperature resistant gas boiler feed water mud |
| CN107759233A (en) * | 2016-08-19 | 2018-03-06 | 张丽媛 | A kind of insulated pouring material |
| CN106830958B (en) * | 2017-03-21 | 2020-04-17 | 北京兰海金诚耐火材料有限责任公司 | Low-aluminum low-heat-conduction alkali-resistant castable |
| CN107573098B (en) * | 2017-09-01 | 2020-01-31 | 武汉钢铁有限公司 | light castable for sintering ignition furnace |
| CN108675809A (en) * | 2018-07-02 | 2018-10-19 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of Ultralight corundum castable and preparation method thereof |
| CN109020582B (en) * | 2018-09-29 | 2021-06-22 | 武汉钢铁有限公司 | Ladle heat-insulating castable and application thereof |
| CN110436858A (en) * | 2019-08-15 | 2019-11-12 | 成都三强轧辊股份有限公司 | A kind of large H-shaped steel collars end cap concrete and its application method |
| CN110423129A (en) * | 2019-08-27 | 2019-11-08 | 北京利尔高温材料股份有限公司 | A kind of heating furnace partition wall hanger brick castable |
| CN111004044B (en) * | 2019-12-26 | 2022-03-29 | 上海宝九和耐火材料有限公司 | Lightweight refractory castable for petrochemical industry |
| CN111116218A (en) * | 2020-02-18 | 2020-05-08 | 巩义市瑞东耐火材料有限公司 | Acid-corrosion-resistant high-strength combined block for circulating fluidized bed boiler lining |
| CN113800926A (en) * | 2021-09-26 | 2021-12-17 | 中钢洛耐科技股份有限公司 | Thermal insulation material and preparation method thereof |
| CN116178031A (en) * | 2022-12-27 | 2023-05-30 | 上海利尔耐火材料有限公司 | Insulating layer castable for aluminum ash rotary kiln and preparation method thereof |
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| CN102381880A (en) * | 2011-07-25 | 2012-03-21 | 郑州京华耐火材料实业有限公司 | Corundum-mullite light brick and preparation method thereof |
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2012
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| CN1762906A (en) * | 2004-10-21 | 2006-04-26 | 宜兴市炉顶密封工程公司耐火保温厂 | Corundum-mullite heat-insulating brick |
| CN1830903A (en) * | 2005-03-10 | 2006-09-13 | 宜兴市张泽耐火材料厂 | Refractory fibre pouring material and its prodn, method |
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| CN102976771A (en) | 2013-03-20 |
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