CN109020459A - A kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material - Google Patents
A kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material Download PDFInfo
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- CN109020459A CN109020459A CN201810970651.1A CN201810970651A CN109020459A CN 109020459 A CN109020459 A CN 109020459A CN 201810970651 A CN201810970651 A CN 201810970651A CN 109020459 A CN109020459 A CN 109020459A
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- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/043—Alkaline-earth metal silicates, e.g. wollastonite
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- 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
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- 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
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The present invention relates to a kind of methods that red mud from sintering process prepares tobermorite type heat preservation fireproofing material, belong to inorganic heat insulation material field, and raw material includes mixture, trace mineral supplement, reinforcing fiber, inorganic glue, waterproofing agent；Hydrothermal synthesis is carried out 1.0~8.0 hours with 180~240 DEG C of superheated steams in injection dynamic response kettle, obtains tobermorite slurries, and reinforcing fiber is added；Inorganic glue and waterproofing agent are sequentially added after slurries filtering；Tobermorite type heat preservation fireproofing material is obtained through being pressed and molded, after drying.Primary raw material red mud from sintering process of the invention is to extract aluminium oxide using soda lime sintering process with bauxite or aluminous fly-ash to be formed by solid waste, greatly reduce the production cost of tobermorite, raw material sources are extensive, reaction time is shorter, and obtained heat preservation fireproofing material intensity is high, bulk density is light, hydrophobicity performance is good；The method for preparing tobermorite of the invention is simple, can dissolve the solid waste generated in aluminum oxide production process, is suitable for industrialization promotion.
Description
Technical field
The present invention relates to a kind of preparation method of tobermorite type heat preservation fireproofing material, in particular to a kind of red mud from sintering process
The method for preparing tobermorite type heat preservation fireproofing material belongs to inorganic heat insulation material field, is mainly used for anti-fire door core board, steamer
Shifting board, steel construction insulated fire, external wall fireproof heat insulating, the building neck such as inner flue air hose and electrolytic cell thermal insulation thermal insulation board
Domain.
Background technique
Tobermorite is one of main mineral constituent of calcium-silicate thermal insulation material, and the thermal insulation material being made from it uses temperature
650 DEG C can be reached, while tobermorite has again that bulk density is small, high high-temp stability is good, bending and compressive strength is high and thermally conductive system
The low advantage of number, thus it is widely used in the primary raw material as light heat-insulating fire proofing material.Currently, the system of tobermorite
Preparation Method is mainly hydrothermal synthesis method, and this method is (main to provide by calcareous raw material (mainly providing CaO) and siliceous raw material
SiO2) be mixed in a certain ratio to be placed in autoclave and reacted to obtain tobermorite, then by addition additive and
Calcium-silicate thermal insulation material is obtained after reinforcing fiber compression molding is dry.Calcareous raw material employed in this method is crystallization mostly
Intact lime stone is made by stringent calcine technology, and not only cost of material is high for exploitation limestone mine, be easy to cause environment
Pollution, and the place of production is different, and mineral resources quality difference is larger, and impurity is affected to subsequent technique in limestone mine.Traditional
Time required for production method reaction process is longer, and therefore, the method that the prior art produces tobermorite has production cost
Height produces the shortcomings that time-consuming.How a kind of low in cost, the market supply sufficient siliceous raw material and calcareous raw material are found, together
When can to shorten the production time of tobermorite again be always people's urgent problem to be solved.
Red mud from sintering process is that bauxite or aluminous fly-ash are used and produced in soda lime sintering process extraction aluminum oxide production process
Solid waste out, according to different then 1.0 tons of aluminium oxide of every production about 0.5~3.0 ton of sintering process of output of raw ore alumina silica ratio
Red mud.A large amount of red mud sufficiently effective cannot utilize at present, can only stack by the stockyard of large area, occupy a large amount of soil
Ground also causes serious pollution to environment.About 70,000,000 tons of the red mud that the whole world generates every year, the red mud that China generates every year
It is 30,000,000 tons or more.The red mud main chemical compositions that bauxite or aluminous fly-ash soda lime sintering process generate be CaO and
SiO2, main object is mutually β-C2S.A large amount of red mud cannot be utilized timely and effectively at present, needed to build red mud dump and prevented
Infiltration processing, red mud dump construction not only additionally increase project investment, occupy a large amount of soils, and the red mud of air storage is easy to make
It is polluted at surrounding enviroment and groundwater resources.Untreated red mud, alkalinity are larger, it is difficult to realize and recycle, while cause oxygen
The alkaline consumption changed in aluminium production is excessively high, influences the economic indicator of entire production process.Therefore, how cost-effectively to realize that red mud provides
Sourceization comprehensive utilization is urgent problem to be solved in alumina producing.
Summary of the invention
The purpose of the present invention is to solve existing red mud from sintering process there are problems that environmental pollution and the wasting of resources, mentions
For a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material, this method is using red mud from sintering process as calcareous
Raw material and part siliceous raw material, obtained tobermorite type thermal insulation material have good pressure-proof and snap-resistent intensity, thermal coefficient
It is low.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material, includes the following steps:
Step 1: adding after red mud from sintering process and siliceous auxiliary material are mixed in the ratio of calcium silicon mol ratio 0.70-0.95
Enter levigate to 0.24mm hereinafter, obtaining mixture no more than the trace mineral supplement of gross mass 3%；
Step 2: the mixture, which is consolidated mass ratio 8-30 by liquid with water, is uniformly mixed the laggard Mobile state hydrothermal synthesis of slurrying
Reaction, obtains tobermorite slurries；
Step 3: reinforcing fiber is added into the tobermorite slurries that step 2 obtains, filtering removes extra moisture, after
It is continuous that inorganic glue and waterproofing agent is added, obtain tobermorite slurry；
Step 4: the tobermorite slurry that step 3 obtains is pressed and molded, tobermorite is obtained after drying
Type insulated fire plate.
The present invention does not make considered critical to the source of used raw material red mud from sintering process, such as can be and utilize flyash
Soda lime sintering process extracts the red mud obtained after aluminium oxide.In one embodiment, using the hair of publication number CN 102249253A
The calcium silicate slag formed in bright patent；The mass content of each composition in the calcium silicate slag are as follows: CaO 50~58%, SiO222~28%,
Al2O32~7%, Fe2O31.52~3%, MgO 1~3%, (Na2O+0.66K2O) < 2.0%；In particular, the mine in the red mud
Object ingredient is mainly beta-dicalcium silicate (β-Ca2SiO4, abbreviation β-C2S), mass content > 70% additionally contains calcium aluminium pomegranate
Stone (3CaOAl2O3·xSiO2), calcite (CaCO3), tricalcium aluminate (3CaOAl2O3·nH2Other mineralogical compositions such as O).
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the red mud from sintering process is
Bauxite or aluminous fly-ash extract aluminium oxide using soda lime sintering process and are formed by solid waste, wherein calcium oxide content
For 45-65%, silica content 20-30%, sodium oxide content is less than 4.0%, alumina content 1.5-9%, and attached alkali content is small
In 1.0%.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the siliceous auxiliary material can be with
It is one or more of high silicon materials such as silicon ash, quartz sand, diatomite, white carbon black, Cab-O-sil.
Inventor is studied for a long period of time discovery, under certain hydrothermal reaction condition (reaction temperature is up to 160 DEG C or more), sintering
The essential mineral phase dicalcium silicate of method red mud can be hydrolyzed into rapidly hydrated calcium silicate gel and calcium hydroxide, by adjusting raw material
When calcium silicon mol ratio in system reaches 5:6 or so, it is brilliant that hydrated calcium silicate gel therein produces tobermorite type calcium silicates
Body, and extra calcium hydroxide is then with the siliceous auxiliary material that comes is supplemented in that the reaction was continued, and it is brilliant also to produce tobermorite type calcium silicates
Body is finally reached and decomposes red mud from sintering process, and adjusting calcium silicon mol ratio makes its reaction generate tobermorite type calcium silicate crystals
Purpose.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the trace mineral supplement
Effect is specification crystal growth direction during Opacity in lens, thus the qualified whisker of long river rising in Ningxia and flowing into central Shaanxi ratio needed for synthesizing, micro addition
Agent can be one or more of aluminum sulfate, sodium sulphate, barium sulfate, barium chloride, aluminium chloride, aluminum nitrate.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the rate-determining steps 2) it is dynamic
180~240 DEG C of superheated steams are used to carry out during state hydrothermal synthesis hydrothermal synthesis 1.0~8.0 hours.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the rate-determining steps 2) it is dynamic
Reaction pressure during state hydrothermal synthesis is 1.0-3.5MPa.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the rate-determining steps 3) in
The reinforcing fiber is one of wood fibre, glass fibre, polypropylene or a variety of；It is mixing that quality, which is added, in reinforcing fiber
The 1~12% of material.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the rate-determining steps 3) in
The inorganic glue is waterglass, can be sodium silicate or potassium water glass, and molecular formula is respectively Na2O·xSiO2With
Na2O·xSiO2, wherein x is modulus of water glass, and specifically used range is 1.5-3.0 in present case；It is mixed that quality, which is added, in inorganic glue
Close the 0.1~6% of material.
In the method that the present invention prepares tobermorite type thermal insulation material using red mud from sintering process, the rate-determining steps 3) in
The waterproofing agent is response type waterproofing agent of organosilicon；0.1~5% that quality is mixture is added in waterproofing agent.
As previously mentioned, mixture used in the present invention, in order to accelerate the progress of reaction, increasing specific surface area is improved
Reaction rate, mixture is levigate to 0.24mm or less；In preparation method of the invention, mixed slurry is pressed and molded and is dried
Dry technology is this field conventional means, is repeated no more.
Beneficial effect
1, the present invention to bauxite and aluminous fly-ash using soda lime sintering process extract aluminium oxide be formed by red mud into
The problems such as row efficiently uses, and not only efficiently solves its storage and environmental pollution, in addition there are be conducive to save tobermorite hydro-thermal
To the demand of calcium source in synthesis process, the exploitation etc. of limestone mine is reduced, economic benefit is greatly improved, while had significant
Society and environmental benefit.
2, in traditional tobermorite synthesis process, since which employs the material systems such as quick lime and quartz sand, so
Crystallization process is longer, and the hydrothermal synthesis time is longer in autoclave, generally needs 8-16 hours, and snow silicon provided by the invention
The synthetic method of calcium stone only needs 1-8 hours, can greatly improve its production efficiency, reduces the unit cost of production.
3, raw material sources used by the preparation method of tobermorite of the present invention are extensive, low in cost, preparation process is simple,
It is easily operated, low energy consumption, and without " three wastes " discharge, have good popularization and application foreground.
4, preparation method of the invention compared with prior art, by using red mud from sintering process and siliceous auxiliary material as original
Material controls the calcium silicon mol ratio in raw material, presses after adding related auxiliaries after progress hydrothermal synthesis reaction under high-temperature and high-pressure conditions
Type is made, " GB/T 10699-2015I calcium silicates is exhausted for the performance satisfaction of the tobermorite type heat preservation fireproofing material obtained after drying
Hot article " standard requirements, can replace Traditional Method production tobermorite type heat preservation fireproofing material.
Detailed description of the invention
Fig. 1 is the XRD spectrum of tobermorite type thermal insulation material of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction in the embodiment of the present invention, to this
Technical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
Red mud from sintering process used by the present embodiment is derived from one alumina producer of Inner Mongol Hohhot district, and quartz sand is derived from
Its desert of Ordos, inner Mongolia area depot cloth, chemical component are shown in Table 1.
The chemical component of table 1 red mud from sintering process and quartz sand
The tobermorite of the present embodiment is by the above-mentioned quartz sand of the above-mentioned red mud from sintering process of 70kg and 30kg according to calcium silicon
Molar ratio is after 0.9031:1 is mixed, the aluminium chloride of 0.1kg, the aluminum sulfate of 0.3kg and 0.4kg barium chloride to be added, using ball
Its levigate to all granularity is respectively less than 0.2mm by grinding machine, then after mixing according to the water that liquid-solid ratio is 20 addition 2016kg
It is put into autoclave, control reaction temperature is 190 DEG C, is stirred under the conditions of reaction pressure 1.60MPa with the speed of 150rpm
Insulation reaction 3h, cooled product is to 90 DEG C after reaction, obtains tobermorite moulding mixture slurry, by material pulp pumping to dashpot,
The glass fibre that 3kg is added filters extra water after mixing, and wet cake is unloaded to mixing channel, and 0.5kg modulus is added and is
2.0 sodium silicate and the waterproofing agent of organosilicon of 0.6kg, obtain mixed slurry after mixing evenly, which is delivered to
In pressure filtration molding machine, maintains form under 400 tons of pressure within 120 seconds, be subsequently placed in tunnel oven and use drying temperature for 90 DEG C of left sides
Tobermorite type heat preservation fireproofing material can be obtained in packaging behind right steam drying 24 hours.
The main object phase of tobermorite type thermal insulation material obtained in the present embodiment is analyzed using X-ray diffraction method, is led
Wanting ingredient is tobermorite crystal, as shown in Figure 1.
After tested, the density of tobermorite type thermal insulation material obtained in the present embodiment is 187kg/m3, thermal coefficient is
0.062W/ (mK), compression strength 1.32MPa, flexural strength 0.73MPa." GB/T10699-2015I silicic acid is reached
Calcium insulating product " standard requirements, can replace Traditional Method production tobermorite type heat preservation fireproofing material.
Embodiment 2
Red mud from sintering process used by the present embodiment is derived from one alumina producer of Shanxi, and silicon ash is with being derived from Ordos, inner Mongolia
Metallurgical group of area one, chemical component are shown in Table 2.
The chemical component of table 2 red mud from sintering process and silicon ash
The tobermorite of the present embodiment is by the above-mentioned quartz sand of the above-mentioned red mud from sintering process of 65kg and 35kg according to calcium silicon
Molar ratio is after 0.7225:1 is mixed, the calcium sulfate of 0.2kg, the barium sulfate of 0.3kg and 0.6kg sodium sulphate to be added, using ball
Its levigate to all granularity is respectively less than 0.18mm by grinding machine, is then that 15 water that 1516.5kg is added are uniformly mixed according to liquid-solid ratio
After be put into autoclave, control reaction temperature is 210 DEG C, is stirred under the conditions of reaction pressure 1.90MPa with the speed of 200rpm
Insulation reaction 6h is mixed, cooled product obtains tobermorite moulding mixture slurry, by material pulp pumping to dashpot to 90 DEG C after reaction
Interior, the glass fibre that 4kg is added filters extra water after mixing, and wet cake is unloaded to mixing channel, and 0.7kg modulus is added
For 2.5 sodium silicate and the waterproofing agent of organosilicon of 0.8kg, mixed slurry is obtained after mixing evenly, which is conveyed
Into pressure filtration molding machine, maintains form under 300 tons of pressure within 120 seconds, be subsequently placed in tunnel oven and use drying temperature for 90 DEG C
Tobermorite type heat preservation fireproofing material can be obtained in packaging behind steam drying 30 hours of left and right.
After tested, the density of tobermorite type thermal insulation material obtained in the present embodiment is 247kg/m3, thermal coefficient is
0.078W/ (mK), compression strength 1.13MPa, flexural strength 0.65MPa." GB/T10699-2015I silicic acid is reached
Calcium insulating product " standard requirements, can replace Traditional Method production tobermorite type heat preservation fireproofing material.
Embodiment 3
Red mud from sintering process used by the present embodiment is derived from one alumina producer of Shanxi, and white carbon black is derived from one chemical plant of Shandong,
Its chemical component is shown in Table 3.
The chemical component of table 3 red mud from sintering process and silicon ash
The tobermorite of the present embodiment is by the above-mentioned quartz sand of the above-mentioned red mud from sintering process of 68kg and 32kg according to calcium silicon
Molar ratio is after 0.8470:1 is mixed, to add the aluminum nitrate of 0.3kg and the aluminium chloride of 0.4kg, using ball mill that its is levigate
It is respectively less than 0.12mm to all granularities, is then put into reaction under high pressure after mixing according to the water that liquid-solid ratio is 12 additions 1208.4
In kettle, control reaction temperature is 240 DEG C, stirs insulation reaction 5h under the conditions of reaction pressure 3.24MPa with the speed of 180rpm, instead
Cooled product obtains tobermorite moulding mixture slurry, the glass of 4kg in material pulp pumping to dashpot, will be added to 90 DEG C after answering
Fiber filters extra water after mixing, and wet cake is unloaded to mixing channel, and the sodium silicate that 1.2kg modulus is 2.8 is added
With the waterproofing agent of organosilicon of 1.0kg, mixed slurry is obtained after mixing evenly, which is delivered in pressure filtration molding machine,
It maintains form under 400 tons of pressure within 120 seconds, is subsequently placed in and uses in tunnel oven drying temperature for 90 DEG C or so of steam drying 24
Tobermorite type heat preservation fireproofing material can be obtained in packaging after hour.
After tested, the density of tobermorite type thermal insulation material obtained in the present embodiment is 206kg/m3, thermal coefficient is
0.058W/ (mK), compression strength 1.02MPa, flexural strength 0.61MPa." GB/T10699-2015I silicic acid is reached
Calcium insulating product " standard requirements, can replace Traditional Method production tobermorite type heat preservation fireproofing material.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material, characterized by the following steps:
Step 1: being added not after red mud from sintering process and siliceous auxiliary material are mixed in the ratio of calcium silicon mol ratio 0.70-0.95
It is levigate greater than the trace mineral supplement of gross mass 3% to 0.24mm hereinafter, obtaining mixture；
Step 2: the mixture and water by liquid are consolidated mass ratio 8-30, to be uniformly mixed the laggard Mobile state hydrothermal synthesis of slurrying anti-
It answers, obtains tobermorite slurries；
Step 3: reinforcing fiber is added into the tobermorite slurries that step 2 obtains, filtering removes extra moisture, continues to add
Enter inorganic glue and waterproofing agent, obtains tobermorite slurry；
Step 4: the tobermorite slurry that step 3 obtains is pressed and molded, tobermorite type guarantor is obtained after drying
Warm fire-proof board.
2. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: siliceous auxiliary material described in step 1 is one or more of silicon ash, quartz sand, diatomite, white carbon black and Cab-O-sil.
3. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: trace mineral supplement described in step 1 is one of aluminum sulfate, sodium sulphate, barium sulfate, barium chloride, aluminium chloride and aluminum nitrate
Or it is several.
4. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: in dynamic autoclaved technology reaction process described in step 2 using 180~240 DEG C of superheated steams carry out hydrothermal synthesis 1.0~
8.0 hour；Reaction pressure is 1.0-3.5MPa.
5. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: reinforcing fiber described in step 3 is one of wood fibre, glass fibre and polypropylene or a variety of；The reinforcing fiber
1~12% that quality is mixture is added.
6. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: inorganic glue described in step 3 is waterglass；0.1~6% that quality is mixture is added in inorganic glue.
7. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as claimed in claim 6, feature
Be: the waterglass is sodium silicate or potassium water glass, and molecular formula is respectively Na2O·xSiO2And K2O·xSiO2, wherein
X is modulus of water glass, and the range of x is 1.5-3.0.
8. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: waterproofing agent described in step 3 is response type waterproofing agent of organosilicon；0.1~5% that quality is mixture is added in waterproofing agent.
9. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as described in claim 1, feature
Be: calcium oxide content is 45-65%, silica content 20-30% in the red mud from sintering process.
10. a kind of method that red mud from sintering process prepares tobermorite type heat preservation fireproofing material as claimed in claim 9, feature
Be: calcium oxide content is 50~58% in the red mud from sintering process, silica content 22~28%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498641A (en) * | 2019-09-02 | 2019-11-26 | 江苏二十六度节能科技有限公司 | A kind of environmental and ecological plate |
| CN111519827A (en) * | 2020-02-10 | 2020-08-11 | 阜康富强园新型建材有限公司 | Composite technology based on application of various products in field of assembled building boards |
| CN114014630A (en) * | 2021-11-25 | 2022-02-08 | 内蒙古中建亚太建材科技有限公司 | Method for preparing tobermorite type fireproof material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498641A (en) * | 2019-09-02 | 2019-11-26 | 江苏二十六度节能科技有限公司 | A kind of environmental and ecological plate |
| CN111519827A (en) * | 2020-02-10 | 2020-08-11 | 阜康富强园新型建材有限公司 | Composite technology based on application of various products in field of assembled building boards |
| CN114014630A (en) * | 2021-11-25 | 2022-02-08 | 内蒙古中建亚太建材科技有限公司 | Method for preparing tobermorite type fireproof material |
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Application publication date: 20181218 |