CN107973579A - A kind of production method of heat-insulating calcium silicate plate - Google Patents
A kind of production method of heat-insulating calcium silicate plate Download PDFInfo
- Publication number
- CN107973579A CN107973579A CN201711416103.6A CN201711416103A CN107973579A CN 107973579 A CN107973579 A CN 107973579A CN 201711416103 A CN201711416103 A CN 201711416103A CN 107973579 A CN107973579 A CN 107973579A
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- Prior art keywords
- heat
- silicon powder
- insulating
- calcium silicate
- mixing slurry
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
- C04B28/186—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/24—Alkaline-earth metal silicates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A kind of production method of heat-insulating calcium silicate plate, by silicon powder Technology application into thermal insulation material, changes the structure of silicate heat-insulating material, improves the heat-insulating property of thermal insulation material.Silicon powder can fill the gap between calcium silicates, because molecular force increases the volume of calcium silicates so that its density reduces, and thermal conductivity factor reduces, and heat insulation effect will be more preferable.Silicon powder can significantly improve the resistance to compression of thermal insulation material, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.The addition of silicon powder, lifting to silicon powder heat-insulating material performance plays key effect, compared to more common calcium silicates refractory material, refractory temperature improves more than 200 DEG C, heat insulation effect improves more than 30%, plate has light weight, contraction distortion rate is small, heat-insulating property is good and following characteristics, heat safe distinguishing feature.
Description
Technical field
This technology is related to thermal insulation material processing technology field, is specifically a kind of side for the performance for improving heat-insulating calcium silicate plate
Method.
Technical background
Thermal insulation material：Thermal insulation material refers generally to the material that thermal conductivity factor is less than or equal to 0.12.Traditional insulation material
Material is to improve gas phase porosity, is reduced based on thermal conductivity factor and the coefficient of conductivity.It common are calcium silicate insulation, calcium silicates
The reinforcing fiber materials past used in heat-insulating material is based on asbestos fibre, but asbestos fibre is to human health, thus
Occur using asbestos-free calcium silicate insulating products such as glass fibre, ceramic fibres.And maximum operation (service) temperature is by tobermorite
650 degree of type arrive 850 degree of eakleite type.
Silicon powder is by natural quartz (SiO2) or vitreous silica (natural quartz is through high-temperature fusion, amorphous state after cooling
SiO2) be process through broken, ball milling (or vibration, airflow milling), the lamp multiple tracks technique such as flotation, pickling purification, high-purity water process
Micro mist.Silicon powder is a kind of nontoxic, tasteless, free of contamination inorganic non-metallic material.Silica is after ultramicro grinding, shape
Into powder.The dispersibility of powder meets this condition.Dioxy is added in the mixing of heat-insulating calcium silicate product production
The micro mist of SiClx so that structure changes to be looked into since it possesses good temperature tolerance, acid-alkali-corrosive-resisting, thermal conductivity, height insulation, low swollen
The excellent performances such as swollen, stable chemical performance, hardness is big, be widely used in chemical industry, electronics, integrated circuit (IC), Electric Plastic,
The fields such as coating, advanced paint, rubber, national defence.With the fast development of high-tech sector, silicon powder will also step into new history
Developing period.The asbestos-free calcium silicate insulating product maximum operation (service) temperature such as existing glass fibre, ceramic fibre is by tobermorite
650 DEG C of type arrive 850 DEG C of eakleite type.Pass through the high-strength silicoglaserite fire resisting temperature for being mixed and made into silicon powder and calcium silicates
Degree can reach 1000 DEG C or so.Fire resistance and heat-insulating property are more superior.
In the innovation and creation of Application No. 201510377407.0, Qiu Yi very waits inventor to disclose a kind of high temperature resistant silicon
Sour calcium thermal insulation material and preparation method thereof.This method is by 5CaO6SiO2·5H2O and 6CaO6SiO2·5H2O mixing systems
Into calcium-silicate thermal insulation material, suitable for 650~800 DEG C.
In the innovation and creation of Application No. 201310272260.X, the inventor such as Ma Shuhua discloses a kind of eakleite
The preparation method of type thermal insulation material, this method reduce the production cost of thermal insulation material, increases economic efficiency, while solve indirectly
Pollutions of two kinds of solid wastes to environment.But there are density is big, thermal conductivity factor is high, linear for thermal insulation material prepared by foregoing invention creation
The shortcomings that shrinking percentage is high.
The content of the invention
To overcome the shortcomings that density existing in the prior art is big, thermal conductivity factor is high and linear shrinkage is high, the present invention carries
A kind of production method of heat-insulating calcium silicate plate is gone out
The present invention detailed process be：
Step 1, milk of lime is prepared；
Step 2, silicon powder mixture is prepared；The silicon powder mixture be by amorphous silicon powder with crystallization silicon powder with
4~8:6~2 mass ratio is mixed to get.
Step 3, mixing slurry is prepared.Milk of lime is mixed with obtained silicon powder mixture, obtains mixing slurry.The lime
The mass values of breast and silicon powder mixture are 0.77~0.85.
The mass ratio of milk of lime and silicon powder mixture is 0.77~0.85 in the mixing slurry.
Step 4, the reaction of mixing slurry；Obtained mixing slurry is added in reaction kettle, water is added into reaction kettle；Water adds
Enter 12~24 times that amount is mixing slurry quality.Heating, makes reaction kettle be warming up to 190 DEG C~220 DEG C in 30~50min, and keeps 4
~8h.It is stirred while the heat temperature raising, is reacted the mixing slurry in reaction kettle.After reaction, cool down
To room temperature.Obtain the mixing slurry after reaction.
Step 5, will obtain compressing by the mixed slurry reacted.Drying and packaging is put in storage.
So far the making of heat-insulating calcium silicate plate is completed.
Silicon powder Technology application into thermal insulation material, is changed the structure of silicate heat-insulating material by the present invention, improves insulation
The heat-insulating property of material.The fusing point of the silicon powder is 1750 degrees Celsius, has good heat resistance, acid-alkali-corrosive-resisting, height absolutely
Edge, low bulk, and the characteristics of stable chemical performance.Silicon powder can fill the gap between calcium silicates, because molecular force will
The volume increase of calcium silicates so that its density reduces, and thermal conductivity factor reduces, and heat insulation effect will be more preferable.Silicon powder can be notable
Improve the resistance to compression of thermal insulation material, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.The addition of silicon powder, it is adiabatic to silicon powder
The lifting of material property plays key effect.
The high-strength silicoglaserite refractory temperature that the present invention obtains is up to 1000 DEG C or so.And heat insulation effect improves 30%
More than.Compared to more common calcium silicates refractory material, refractory temperature improves more than 200 DEG C, and heat insulation effect improves more than 30%.
Heat-insulating calcium silicate plate prepared by the present invention has light weight, contraction distortion rate is small, heat-insulating property is good and following characteristics,
Heat safe distinguishing feature.
The experiment proved that, using same certain product of technique thermal purification, the heat-insulating calcium silicate plate that the present invention makes with it is existing
The insulating brick for having technology is compared, and the power consumption of common insulating brick is 1472 degree, and power consumption of the invention is 896 degree, and heat-insulating property is significantly
Improve, exclude other factors, heat insulation effect and energy-saving effect improve more than 35%.
Embodiment
The present invention is a kind of production method of heat-insulating calcium silicate plate, its detailed process will be described in detail by 4 embodiments
It is：
Step 1, quick lime is added enough water to react, obtains the suspension of calcium hydroxide, stand 1 it is small when after, outwell
The water on surface, it is agitated to obtain milk of lime.
Step 2, by amorphous silicon powder with crystallizing silicon powder with 4~8:6~2 mass ratio mixing, obtains silicon powder and mixes
Compound.
Step 3, milk of lime is mixed with obtained silicon powder mixture, obtains mixing slurry.The milk of lime and silicon powder
The mass ratio of mixture is 0.77~0.85.
Step 4, obtained mixing slurry is added in reaction kettle, water is added into reaction kettle；The addition of water is mixing slurry
12~24 times of quality.Heating, makes reaction kettle be warming up to 190 DEG C~220 DEG C in 30~50min, and keeps 4~8h.Described
It is stirred while heat temperature raising, is reacted the mixing slurry in reaction kettle.After reaction, it is cooled to room temperature.Obtain
Mixed slurry after reaction.
Step 5, it is mixed slurry after obtained reaction is compressing.Drying and packaging is put in storage.
So far the making of heat-insulating calcium silicate plate is completed.
The manufacturing process of various embodiments of the present invention is identical, the difference is that only the technological parameter of each embodiment.
Claims (3)
1. a kind of production method of heat-insulating calcium silicate plate, it is characterised in that detailed process is：
Step 1, milk of lime is prepared；
Step 2, silicon powder mixture is prepared；
Step 3, mixing slurry is prepared；Milk of lime is mixed with obtained silicon powder mixture, obtains mixing slurry；The milk of lime with
The mass values of silicon powder mixture are 0.77~0.85；
Step 4, the reaction of mixing slurry；Obtained mixing slurry is added in reaction kettle, water is added into reaction kettle；The addition of water
For 12~24 times of mixing slurry quality；Heating, makes reaction kettle be warming up to 190 DEG C~220 DEG C in 30~50min, and keep 4~
8h；It is stirred while the heat temperature raising, is reacted the mixing slurry in reaction kettle；After reaction, it is cooled to
Room temperature；Obtain the mixing slurry after reaction；
Step 5, will obtain compressing by the mixed slurry reacted；Drying and packaging is put in storage；
So far the making of heat-insulating calcium silicate plate is completed.
2. the production method of heat-insulating calcium silicate plate as claimed in claim 1, it is characterised in that the silicon powder mixture be by
Amorphous silicon powder is with crystallization silicon powder with 4~8:6~2 mass ratio is mixed to get.
3. the production method of heat-insulating calcium silicate plate as claimed in claim 1, it is characterised in that milk of lime and silicon in the mixing slurry
The mass ratio of micro mist mixture is 0.77~0.85.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711416103.6A CN107973579A (en) | 2017-12-25 | 2017-12-25 | A kind of production method of heat-insulating calcium silicate plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711416103.6A CN107973579A (en) | 2017-12-25 | 2017-12-25 | A kind of production method of heat-insulating calcium silicate plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107973579A true CN107973579A (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711416103.6A Pending CN107973579A (en) | 2017-12-25 | 2017-12-25 | A kind of production method of heat-insulating calcium silicate plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908947A (en) * | 2022-04-26 | 2022-08-16 | 中科润资(重庆)节能科技有限公司 | High-temperature-resistant smoke-preventing and exhausting air pipe and manufacturing method thereof |
| CN115259823A (en) * | 2022-07-21 | 2022-11-01 | 武汉建筑材料工业设计研究院有限公司 | Lightweight high-strength low-thermal conductivity aerated concrete and preparation method thereof |
| WO2023202699A1 (en) * | 2022-04-22 | 2023-10-26 | 中科润资(重庆)气凝胶技术研究院有限公司 | Transparent flexible heating sheet and preparation method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6477528A (en) * | 1987-09-18 | 1989-03-23 | Sekisui Chemical Co Ltd | Heat insulating panel |
| CN1307083A (en) * | 2000-01-24 | 2001-08-08 | 莱州明发隔热材料有限公司 | Method for mfg. thermal insulation and fireproof calcium silicate material |
-
2017
- 2017-12-25 CN CN201711416103.6A patent/CN107973579A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6477528A (en) * | 1987-09-18 | 1989-03-23 | Sekisui Chemical Co Ltd | Heat insulating panel |
| CN1307083A (en) * | 2000-01-24 | 2001-08-08 | 莱州明发隔热材料有限公司 | Method for mfg. thermal insulation and fireproof calcium silicate material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202699A1 (en) * | 2022-04-22 | 2023-10-26 | 中科润资(重庆)气凝胶技术研究院有限公司 | Transparent flexible heating sheet and preparation method therefor |
| WO2023202698A1 (en) * | 2022-04-22 | 2023-10-26 | 中科润资(重庆)气凝胶技术研究院有限公司 | Fireproof electric heating building material and preparation method therefor |
| CN114908947A (en) * | 2022-04-26 | 2022-08-16 | 中科润资(重庆)节能科技有限公司 | High-temperature-resistant smoke-preventing and exhausting air pipe and manufacturing method thereof |
| CN114908947B (en) * | 2022-04-26 | 2023-10-20 | 中科润资(重庆)节能科技有限公司 | High-temperature-resistant smoke-proof air duct and manufacturing method thereof |
| CN115259823A (en) * | 2022-07-21 | 2022-11-01 | 武汉建筑材料工业设计研究院有限公司 | Lightweight high-strength low-thermal conductivity aerated concrete and preparation method thereof |
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