CN104761231B - A kind of light heat-insulation wall material and preparation method thereof - Google Patents
A kind of light heat-insulation wall material and preparation method thereof Download PDFInfo
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- CN104761231B CN104761231B CN201510139878.8A CN201510139878A CN104761231B CN 104761231 B CN104761231 B CN 104761231B CN 201510139878 A CN201510139878 A CN 201510139878A CN 104761231 B CN104761231 B CN 104761231B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The present invention provides a kind of light heat-insulation wall material and preparation method thereof.The light heat-insulation wall material of the present invention is to form the calcium silicate slag of 50～90 weight portions, the active calcium silicate of 10～50 weight portions, the water mixing of the portland cement of 5～20 weight portions, the desulfurated plaster of 2～5 weight portions and 50～100 weight portions, molding, maintenance.The light heat-insulation wall material of the present invention extracts the calcium silicate slag that formed of aluminium oxide and active calcium silicate as raw material with aluminous fly-ash, gangue etc., its low cost, wide material sources, the light heat-insulation wall material comprcssive strength being obtained using this raw material is high, bulk density is little, heat conductivity is low, combination property is good, the application request of construction material can preferably be met, easy to utilize.
Description
Technical field
The present invention relates to a kind of materials for wall is and in particular to a kind of light heat-insulation wall material and preparation method thereof.
Background technology
Materials for wall is currently mainly used solid clay brick, cement mortar checker brick, air-entrained concrete building block, foam coagulation
Earth building blocks etc., but these materials not only consume the natural resourcess such as substantial amounts of clay, cement, aggregate, additionally generally existing weight
Measure the defects such as big, water absorption rate is high, heat conductivity is big, do not meet the performance requirements such as modern architecture material lightweight, insulation, be therefore badly in need of
Develop new materials for wall.
Substantial amounts of red mud can be produced during with bauxite for raw material production aluminium oxide, it not only deposits difficulty, and
And also pollute the environment.At present, have using red mud as materials for wall raw material correlational study.For example, notification number is CN
The Chinese patent of 102503507B discloses a kind of novel processing step of red mud light-weight wall material, by waste glass powder 1～
10wt%, rock wool waste material 1～10wt%, flyash 1～10wt%, gangue 1～20wt%, tile polished waste 1～10wt%,
Useless ceramic tile powder 1～10wt%, red mud 94～30wt%, form by a firing after additional coal dust 5～10wt% mixed grinding.The method
Although to some extent solving depositing and pollution problem of industrial waste red mud, but by adding the wall prepared by red mud
The intensity of body material is relatively low, only 3MPa about.
Additionally, with the worsening shortages of China's bauxite resource, being discarded using industrial solids such as aluminous fly-ash, gangues
Thing extracts aluminium oxide and is increasingly subject to people's attention.It is alkaline process that flyash extracts the more ripe production method of aluminium oxide, and
Alkaline process is divided into limestone sintering process and soda lime sintering process again, for comparing limestone sintering process, soda lime sintering process material stream
Amount and energy and material consumption are lower, therefore more suitable for industrialization promotion.However, soda lime sintering process is in 1 ton of aluminium oxide of every production
2～2.5 tons of calcium silicate slags and 0.7～0.8 ton of active calcium silicate will be produced, so substantial amounts of calcium silicate slag and active calcium silicate are not simultaneously
Only take up a large amount of land resources, and secondary pollution can be produced to environment, therefore it is carried out with effectively utilizes and not only contributes to save
About land resource, can also increase economic efficiency simultaneously.
Content of the invention
The present invention provides a kind of light heat-insulation wall material and preparation method thereof, for solving body of wall material of the prior art
Expect the technological deficiencies such as low intensity, water absorption rate are high, heat conductivity is big.
The present invention provides a kind of light heat-insulation wall material, by the calcium silicate slag of 50～90 weight portions, 10～50 weight portions
Active calcium silicate, the Portland cement of 5～20 weight portions, the desulfurated plaster of 2～5 weight portions and 50～100 weight portions
Water mixing, molding, maintenance form.
The present invention does not make considered critical to the source of the raw material calcium silicate slag being adopted, for example, can be using coal ash alkali stone
The calcium silicate slag that grey sintering process obtains after extracting aluminium oxide.In one embodiment, using the invention of publication number CN 102249253A
The calcium silicate slag being formed in patent；In this calcium silicate slag, the mass content of each composition is：CaO 50～58%, SiO222～28%,
Al2O32～7%, Fe2O31.52～3%, MgO 1～3%, (Na2O+0.66K2O)<2.0%；Particularly, in this calcium silicate slag
Mineralogical composition be mainly beta-dicalcium silicate (β-Ca2SiO4, abbreviation β-C2S), its mass content ＞ 70%, additionally contains calcium
Pyralspite (3CaO Al2O3·xSiO2), calcite (CaCO3), tricalcium aluminate (3CaO Al2O3·nH2Other mineral such as O)
Composition.
The present invention does not make considered critical to the source of the raw material active calcium silicate being adopted, and in one embodiment, adopts
The active calcium silicate being formed in the patent of invention of publication number CN 102249253A, in this active calcium silicate, the quality of each composition contains
Measure and be：CaO 35～40%, SiO235～40%, Al2O31～3%, Fe2O30.5～1.5%, MgO 1～2%, Na2O 1
～2%；Particularly, this active calcium silicate be in spherical, 40 μm of its particle diameter ＜, aperture be 2～50nm, specific surface area be 150～
200m2/g
Further, described active calcium silicate can be prepared via a method which to obtain：
Aluminous fly-ash and sodium hydroxide solution are carried out desilication reaction, then solid-liquid separation obtains desiliconization liquid；
Described desiliconization liquid and lime cream are reacted, then filtration, dealkalize, washing, drying, obtain active calcium silicate.
The present invention does not strictly limit to the Portland cement being adopted, for example, can adopt GB175-2007 standard
In Portland cement, gross mass content >=80% of grog and Gypsum Fibrosum and ＜ 95% in this Portland cement.This
Outward, the present invention does not strictly limit to the desulfurated plaster being adopted, for example, can be desulfurization obtained from the sulphur removal of thermal power plant
Gypsum Fibrosum, sulfur trioxide (SO in this desulfurated plaster3) mass content ＞ 38%.
The present invention also provides the preparation method of any of the above-described described light heat-insulation wall material, comprises the steps：
According to weight portion, described calcium silicate slag, active calcium silicate, Portland cement, desulfurated plaster and water are mixed, system
Obtain mixed slurry；
By described mixed slurry inject mould, quiet stop, prepared molding blank；
Described molding blank is carried out with steam curing, prepared light heat-insulation wall material.
Further, stir after the mixing of described calcium silicate slag, active calcium silicate, Portland cement, desulfurated plaster and water
Mix 5～10min；Described stirring can be implemented using the conventional agitating device in this area.
Further, the described quiet time stopping is controlled can be 2～6h.
Additionally, in one embodiment, described steam curing is temperature at 150～200 DEG C and the pressure of 0.9～1.3MPa
Maintenance 6～10 hours under power (absolute pressure).Particularly, after carrying out described steam curing, then it is normal that molding blank is placed in room temperature
Pressure maintenance 3～5 days；Which can exclude the moisture of material internal, so that the quality of material is more stable.
The enforcement of the present invention, at least has the advantage that：
1st, to the extraction aluminium oxide such as aluminous fly-ash, gangue, the calcium silicate slag being formed and active calcium silicate are carried out the present invention
Effectively utilizes, not only efficiently solve it and deposit and the problems such as environmental pollution, in addition with beneficial to saving clay, cement, aggregate
Deng materials for wall raw material, drastically increase economic benefit.
2nd, the comprcssive strength of the light heat-insulation wall material of the present invention, up to 10～25MPa, can preferably meet building
The application request of material, and its bulk density is only 0.6～1.0g/cm3, fabric structure weight can be made greatly to subtract
Gently；Additionally, its heat conductivity is 0.12～0.18W/ (m K), meet the energy conservation standard of current New Buildings 50%, comprehensive
Application effect is good.
3rd, the raw material sources that the preparation method of light heat-insulation wall material of the present invention is adopted are extensive, with low cost, preparation
Process is simple, easily operated, energy consumption are low, and no " three wastes " discharge, have good popularizing application prospect.
Brief description
Fig. 1 is the process chart of one embodiment of the invention light heat-insulation wall material preparation method.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, the accompanying drawing below in conjunction with the present invention and enforcement
Example, is clearly and completely described to the technical scheme in the embodiment of the present invention it is clear that described embodiment is the present invention
A part of embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
The every other embodiment being obtained under the premise of making creative work, broadly falls into the scope of protection of the invention.
Embodiment 1
The calcium silicate slag that the present embodiment is adopted and active calcium silicate take from Inner Mongol Hohhot district one alumina producer, its
Chemical composition is shown in Tables 1 and 2 respectively, and desulfurated plaster takes from Inner Mongol Hohhot district one coal-burning power plant, and its chemical composition is shown in
Table 3；Portland cement is the Portland cement in GB175-2007 standard.
The chemical composition of table 1 calcium silicate slag
| Calcium silicate slag | CaO | SiO2 | Al2O3 | Fe2O3 | Na2O | MgO |
| Content (%) | 56.73 | 27.88 | 6.38 | 1.89 | 0.98 | 1.93 |
The chemical composition of table 2 active calcium silicate
| Active calcium silicate | CaO | SiO2 | Al2O3 | Fe2O3 | Na2O | MgO |
| Content (%) | 38.73 | 37.98 | 1.42 | 1.03 | 1.48 | 1.24 |
The chemical composition of table 3 desulfurated plaster
| Calcium silicate slag | CaO | SiO2 | Al2O3 | Fe2O3 | SiO3 | MgO | H2O |
| Content (%) | 34.38 | 2.59 | 1.02 | 0.89 | 41.68 | 1.54 | 8.96 |
The light heat-insulation wall material of the present embodiment is by the above-mentioned activity of the above-mentioned calcium silicate slag of 80 weight portions, 20 weight portions
Calcium silicates, the water mixing of the Portland cement of 12 weight portions, the desulfurated plaster of 3 weight portions and 80 weight portions, molding, maintenance
Form.
The preparation method of this light heat-insulation wall material is specially：
The water of above-mentioned weight portion is placed in agitator tank, successively according to above-mentioned weight portion add calcium silicate slag, active calcium silicate,
Portland cement and desulfurated plaster, stirring mixing in agitator tank obtained mixed slurry after 7 minutes；Subsequently, by mixing slurry
Material be directly poured in mould, quiet stop 5h, prepared molding blank；Molding blank is cut to required shape according to the size of design
Shape, is then transferred in still kettle, in 2 hours, still kettle is warming up to 180 DEG C and is forced into 1.0MPa, and subsequently insulation is protected
Pressure 8 hours, then slow cooling, to room temperature, after taking out material, is placed in and places 3 days under room temperature, that is, make from still kettle in 2 hours
Obtain light heat-insulation wall material.
According to the method in GB 11968-2006 standard, the physicochemical property of prepared light heat-insulation wall material is examined
Survey, result shows：The comprcssive strength of this materials for wall is 17.6MPa, and bulk density is 0.86g/cm3, water absorption rate is 28.6%,
Linear shrinkage ratio is 0.44%, and heat conductivity is 0.18W/ (m K), meets steam-pressing aero-concrete in 11968-2006 standard and builds
Block B10 level.
Embodiment 2
The calcium silicate slag that the present embodiment is adopted and active calcium silicate take from Inner Mongol Hohhot district one alumina producer, its
Chemical composition is shown in Table 4 and table 5 respectively, and desulfurated plaster takes from Inner Mongol Hohhot district one coal-burning power plant, and its chemical composition is shown in
Table 3；Portland cement is the Portland cement in GB175-2007 standard.
The chemical composition of table 4 calcium silicate slag
| Calcium silicate slag | CaO | SiO2 | Al2O3 | Fe2O3 | Na2O | MgO |
| Content (%) | 54.72 | 26.74 | 5.81 | 1.66 | 1.68 | 1.71 |
The chemical composition of table 5 active calcium silicate
| Calcium silicate slag | CaO | SiO2 | Al2O3 | Fe2O3 | Na2O | MgO |
| Content (%) | 36.54 | 36.20 | 1.56 | 1.23 | 1.72 | 1.44 |
The light heat-insulation wall material of the present embodiment is by the above-mentioned activity of the above-mentioned calcium silicate slag of 70 weight portions, 30 weight portions
Calcium silicates, the water mixing of the Portland cement of 10 weight portions, the desulfurated plaster of 5 weight portions and 95 weight portions, molding, maintenance
Form.
The preparation method of this light heat-insulation wall material is specially：
The water of above-mentioned weight portion is placed in agitator tank, successively according to above-mentioned weight portion add calcium silicate slag, active calcium silicate,
Portland cement and desulfurated plaster, stirring mixing in agitator tank obtained mixed slurry after 8 minutes；Subsequently, by mixing slurry
Material be directly poured in mould, quiet stop 6h, prepared molding blank；Molding blank is cut to required shape according to the size of design
Shape, is then transferred in still kettle, in 2 hours, still kettle is warming up to 195 DEG C and is forced into 1.39MPa, is subsequently incubated
Pressurize 10 hours, then slow cooling, to room temperature, after taking out material, is placed in and places 3 days under room temperature from still kettle in 2 hours,
Light heat-insulation wall material is obtained.
According to the method in GB 11968-2006 standard, the physicochemical property of prepared light heat-insulation wall material is examined
Survey, result shows：The comprcssive strength of this materials for wall is 12.3MPa, and bulk density is 0.72g/cm3, water absorption rate is 35.6%,
Linear shrinkage ratio is 0.48%, and heat conductivity is 0.14W/ (m K), meets steam-pressing aero-concrete in 11968-2006 standard and builds
Block B10 level.
Embodiment 3
The raw material that the present embodiment light heat-insulation wall material is adopted is same as Example 1, and it is by the silicon of 90 weight portions
Calcium slag, the active calcium silicate of 10 weight portions, the Portland cement of 5 weight portions, the desulfurated plaster of 2 weight portions and 70 weight portions
Water mixing, molding, maintenance form.
The preparation method of this light heat-insulation wall material is specially：
The water of above-mentioned weight portion is placed in agitator tank, successively according to above-mentioned weight portion add calcium silicate slag, active calcium silicate,
Portland cement and desulfurated plaster, stirring mixing in agitator tank obtained mixed slurry after 5 minutes；Subsequently, by mixing slurry
Material be directly poured in mould, quiet stop 2h, prepared molding blank；Molding blank is cut to required shape according to the size of design
Shape, is then transferred in still kettle, in 2 hours, still kettle is warming up to 150 DEG C and is forced into 0.9MPa, and subsequently insulation is protected
Pressure 6 hours, then slow cooling, to room temperature, after taking out material, is placed in and places 4 days under room temperature, that is, make from still kettle in 2 hours
Obtain light heat-insulation wall material.
According to the method in GB 11968-2006 standard, the physicochemical property of prepared light heat-insulation wall material is examined
Survey, result shows：The comprcssive strength of this materials for wall is 23.6MPa, and bulk density is 0.95g/cm3, water absorption rate is 26.7%,
Linear shrinkage ratio is 0.40%, and heat conductivity is 0.17W/ (m K), meets steam-pressing aero-concrete in 11968-2006 standard and builds
Block B10 level.
Embodiment 4
The raw material that the present embodiment light heat-insulation wall material is adopted is same as Example 2, and it is by the silicon of 50 weight portions
Calcium slag, the active calcium silicate of 50 weight portions, the Portland cement of 20 weight portions, the desulfurated plaster of 4 weight portions and 100 weight
The water mixing of part, molding, maintenance form.
The preparation method of this light heat-insulation wall material is specially：
The water of above-mentioned weight portion is placed in agitator tank, successively according to above-mentioned weight portion add calcium silicate slag, active calcium silicate,
Portland cement and desulfurated plaster, stirring mixing in agitator tank obtained mixed slurry after 10 minutes；Subsequently, by mixing slurry
Material be directly poured in mould, quiet stop 6h, prepared molding blank；Molding blank is cut to required shape according to the size of design
Shape, is then transferred in still kettle, in 2 hours, still kettle is warming up to 200 DEG C and is forced into 1.3MPa, and subsequently insulation is protected
Pressure 9 hours, then slow cooling, to room temperature, after taking out material, is placed in and places 5 days under room temperature, that is, make from still kettle in 2 hours
Obtain light heat-insulation wall material.
According to the method in GB 11968-2006 standard, the physicochemical property of prepared light heat-insulation wall material is examined
Survey, result shows：The comprcssive strength of this materials for wall is 10.4MPa, and bulk density is 0.66g/cm3, water absorption rate is 36.4%,
Linear shrinkage ratio is 0.56%, and heat conductivity is 0.12W/ (m K), meets steam-pressing aero-concrete in 11968-2006 standard and builds
Block B10 level.
Finally it should be noted that：Various embodiments above only in order to technical scheme to be described, is not intended to limit；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or wherein some or all of technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a kind of light heat-insulation wall material is it is characterised in that work by the calcium silicate slag of 50～90 weight portions, 10～50 weight portions
Property calcium silicates, the water of the Portland cement of 5～20 weight portions, the desulfurated plaster of 2～5 weight portions and 50～100 weight portions
Mixing, molding, maintenance form；
In described active calcium silicate, the mass content of each composition is：CaO 35～40%, SiO235～40%, Al2O31～
3%, Fe2O30.5～1.5%, MgO 1～2%, Na2O 1～2%.
2. light heat-insulation wall material according to claim 1 it is characterised in that in described calcium silicate slag each composition quality
Content is：CaO 50～58%, SiO222～28%, Al2O32～7%, Fe2O31.52～3%, MgO 1～3%, (Na2O+
0.66K2O)<2.0%.
3. light heat-insulation wall material according to claim 1 is it is characterised in that grog in described Portland cement
Gross mass content >=80% and ＜ 95% with Gypsum Fibrosum.
4. light heat-insulation wall material according to claim 1 is it is characterised in that sulfur trioxide in described desulfurated plaster
Mass content ＞ 38%.
5. the preparation method of the arbitrary described light heat-insulation wall material of Claims 1-4 is it is characterised in that include following walking
Suddenly：
According to weight portion, described calcium silicate slag, active calcium silicate, Portland cement, desulfurated plaster and water are mixed, be obtained mixed
Close slurry；
By described mixed slurry inject mould, quiet stop, prepared molding blank；
Described molding blank is carried out with steam curing, prepared light heat-insulation wall material.
6. preparation method according to claim 5 is it is characterised in that by described calcium silicate slag, active calcium silicate, common silicic acid
5～10min is stirred after salt cement, desulfurated plaster and water mixing.
7. preparation method according to claim 5 is it is characterised in that control the described quiet time stopping to be 2～6h.
8. preparation method according to claim 5 is it is characterised in that described steam curing is the temperature at 150～200 DEG C
With maintenance under the pressure of 0.9～1.3MPa 6～10 hours.
9. after preparation method according to claim 5 is it is characterised in that carry out described steam curing, then by molding blank
It is placed in maintenance 3～5 days under normal temperature and pressure.
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| CN105837116A (en) * | 2016-03-28 | 2016-08-10 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Preparation method of light thermal insulation wall material |
| CN108129116A (en) * | 2017-12-02 | 2018-06-08 | 北京铝能清新环境技术有限公司 | A kind of architecture decorative product and its preparation method |
| CN108929094A (en) * | 2018-09-11 | 2018-12-04 | 嘉善凯达水泥构件有限公司 | A kind of honeycombed cement tubulation and its manufacture craft |
| CN112940783B (en) * | 2021-01-26 | 2022-07-01 | 长治市碳谷科技孵化器有限公司 | Comprehensive utilization system and method of coal gangue |
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| JPH0696473B2 (en) * | 1992-07-24 | 1994-11-30 | 清水建設株式会社 | Glass fiber reinforced cement lightweight cured product |
| US7744691B2 (en) * | 2007-04-10 | 2010-06-29 | Calcium Silicate Corporation | Energy conserving pozzolan compositions and cements incorporating same |
| CN102180647A (en) * | 2011-01-28 | 2011-09-14 | 内蒙古科技大学 | Desulfurized building gypsum water-proof building block |
| CN103319118B (en) * | 2013-05-21 | 2014-11-12 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for making heat insulation plates through utilizing industrial solid wastes |
| CN103539424A (en) * | 2013-11-05 | 2014-01-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Thermal insulation plate production method |
| CN104129934A (en) * | 2014-07-09 | 2014-11-05 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Cementing material containing silicon-calcium slag and preparation method thereof |
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