CN109336434A - A kind of preparation method of underground heat clay base geological polymer - Google Patents
A kind of preparation method of underground heat clay base geological polymer Download PDFInfo
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- CN109336434A CN109336434A CN201811575113.9A CN201811575113A CN109336434A CN 109336434 A CN109336434 A CN 109336434A CN 201811575113 A CN201811575113 A CN 201811575113A CN 109336434 A CN109336434 A CN 109336434A
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- underground heat
- preparation
- heat clay
- geological polymer
- base geological
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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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of preparation methods of underground heat clay base geological polymer, comprising the following steps: (1) after being dried, being ground by raw material, is placed in Muffle furnace and calcines；(2) alkali-activator is added, stirs, obtains mixed system；(3) mixed system is poured into mold, puts and vibrates on a vibration table, exclude bubble；(4) it is put into thermostatic curing case, is conserved at normal atmospheric pressure, after maintenance 6 hours, be transferred to and conserve again 7-10 days at room temperature.Present invention acquisition underground heat clay geology polymeric articles are practical, and compressive property is good, can be with large-scale application in construction project, such as prepare net slurry, mortar, concrete, building block；In addition, this programme use underground heat clay reactivity with higher, reduce raw material activation cost and energy consumption, have using it is energy saving, preserve the ecological environment.
Description
Technical field
The invention discloses a kind of preparation methods of underground heat clay base geological polymer.
Background technique
With the continuous reinforcement deteriorated with mankind's environmental consciousness of environment, conventional cement industry is due to the energy, resource consumption
Greatly, environmental pollution is serious has been faced with stern challenge, other than being improved to existing cement production process, how
Develop a kind of low energy consumption, the cement replacement of low pollution also becomes major issue urgently to be resolved.
Geo-polymer is a kind of System of Silica/Aluminum Microparticle hydrochlorate gel rubber material of three-dimensional undefined structure.The production of geo-polymer
Low energy consumption, only the 30% of cement production consumption, and the carbon emission amount in production process is only the 20% of cement.In addition, geology is poly-
Close object also have durability it is good, it is impervious it is strong, intensity is high, rate of set is fast, to the superior performance such as heavy metal good fixing effect,
Therefore wide application prospect is shown in fields such as construction material, Materials with High Strength, sealing materials, be considered as the substitution of cement
Material.
Underground heat clay (Geothermal Clay) is industrial waste common in Development of Geothermal Resources, is rich in a large amount of silicon
Aluminate, be put forward for the first time in 2017 (Wan Q., Rao F., Song S, Le ó n-Pati o C.A., 2017,
Geothermal clay-based geopolymer binders: synthesis and microstructural
Characterization, Applied Clay Science, 146,223-229).So far underground heat clay is not yet found
Related application.Due to being influenced by underground heat high temperature and geothermal activity, silicate and aluminium mineral material therein have than one
As the higher reactivity of clay, therefore be used as the reaction raw materials of geo-polymer.
Therefore the present invention replaces the Material synthesis such as kaolin with the geo-polymer of higher-strength, pole using underground heat clay
Big reduces the cost of material of preparation, while utilizes discarded underground heat clay resourceization.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of underground heat clay synthesis geo-polymer, it is intended to further decrease ground
The preparation cost of matter polymer and the carbon emission of pretreatment of raw material, while improving the utilization rate of underground heat clay.
A kind of preparation method of underground heat clay base geological polymer, comprising the following steps:
(1) underground heat clay pre-processes: underground heat clay being dried, after being ground to certain particle size, is calcined in Muffle furnace；
(2) alkali-activator is added into step (1) calcined raw material, is sufficiently stirred；
(3) mixed system that step (2) obtains is poured into mold, puts and vibrates on a vibration table, exclude bubble；
(4) mold of step (3) is sealed, is put into thermostatic curing case, is conserved at normal atmospheric pressure, is retransferred later
To conserving at room temperature.
Step (1) drying condition, which is 60 DEG C, dries 48 hours.
Granularity is 100% less than 1 millimeter after step (1) described grinding.
Step (1) muffle furnace is 550-800 DEG C, and calcination time is 2 hours.
Step (2) alkali-activator is mixed with raw material 1:0.9-1:1.1 in mass ratio.
The alkali-activator the preparation method comprises the following steps: sodium hydroxide and sodium metasilicate are mixed in proportion after, as molten
Matter is soluble in water, is uniformly mixed.
The molar ratio of the sodium hydroxide and sodium metasilicate is 1:1-1:2；The solute and water 1:1.7-1:2.5 in mass ratio
Mixing.
Step (3) time of vibration is 5-10 minutes.
The curing temperature of step (4) described curing box is 60-80 DEG C, and curing time is 6 hours.
Step (4) curing time at room temperature is 7-10 days.
Compared with prior art, the invention has the following advantages: this programme, which obtains underground heat clay geology, polymerize produce
Product are practical, and compressive property is good, can such as prepare net slurry, mortar, concrete, block with large-scale application in construction project
Block etc.；This programme reduces the preparation cost of geo-polymer using discarded underground heat clay as raw material；This programme alleviates
Underground heat clay is as environmental disruption solid waste stockpiling bring security risk and may cause；In addition, this programme uses ground
Hot sticky soil reactivity with higher reduces the cost and energy consumption of raw material activation, has and utilizes energy saving, protecting ecology ring
Border.
Detailed description of the invention
Fig. 1 is the stress-strain relation figure of the underground heat clay-based geology polymer material of the embodiment of the present invention 1.
Fig. 2 is the stress-strain relation figure of the underground heat clay-based geology polymer material of the embodiment of the present invention 2.
Fig. 3 is the stress-strain relation figure of the underground heat clay-based geology polymer material of the embodiment of the present invention 3.
Specific embodiment
Embodiment 1
A kind of method of underground heat clay synthesis geo-polymer, includes the following steps,
(1) pretreatment of raw material: by underground heat clay after 60 °C dry 48 hours, be ground to granularity 100% less than 1 millimeter, and
It is calcined 2 hours for 800 °C in Muffle furnace；
(2) alkali-activator is added, is the amount for pressing table 1 in the raw material obtained in (1), mixing for sodium hydroxide and sodium metasilicate is added
It closes solution and is sufficiently stirred；
(3) step (2) mixed system obtained is poured into mold, and put on a vibration table, shaken 5 minutes, exclude gas
Bubble；
(4) step (3) mixed system obtained is sealed, is put into the curing box of constant temperature, is supported at normal atmospheric pressure
Shield, curing temperature are 80 degrees Celsius, and curing time is 6 hours, are conserved again at room temperature 10 days again later.
Fig. 1 is the stress strain curve figure of the underground heat clay geology polymer of embodiment 1.Observe dregs geology in figure
The stress strain curve of polymer material, in strain early period, stress increases with the change rate of strain and is gradually increased, to answering
When change reaches 2.4%, stress, which reaches, is up to 19.3MPa.Material is destroyed later, and downward trend is presented in curve.
In embodiment 1, when pretreatment of raw material, preferred calcination temperature is 800 °C, compared with other calcination temperatures, this
The underground heat clay of temperature lower calcination has best reactivity, and the geo-polymer structure of production is the closest.
The alkali-activator is sodium hydroxide and sodium metasilicate mixed solution, sodium hydroxide and sodium metasilicate in the solution
Molar ratio is 1:1.The polymerization reaction of the mixed solution of both alkali hot sticky soil matrix geo-polymer over the ground has facilitation, can
Form the closest, homogeneity geo-polymer structure.
The mass ratio of solute and water is 1:2 in the alkali-activator, and excessively high water content, which will lead in geo-polymer, to be produced
Raw a large amount of hole, to reduce the intensity of geo-polymer.
Curing temperature is 80 degrees Celsius, and High Temperature Curing can speed up the reaction rate of geo-polymer, advantageously form height
The geo-polymer of intensity.
Embodiment 2
A kind of method of underground heat clay synthesis geo-polymer, includes the following steps,
(1) pretreatment of raw material: underground heat clay be ground to granularity 100% less than 1 millimeter after 60 °C dry 48 hours, and
It is calcined 2 hours for 600 °C in Muffle furnace；
(2) alkali-activator is added, is the amount for pressing table 1 in the raw material obtained in (1), mixing for sodium hydroxide and sodium metasilicate is added
It closes solution and is sufficiently stirred；
(3) step (2) mixed system obtained is poured into mold, and put on a vibration table, shaken 5 minutes, exclude gas
Bubble；
(4) step (3) mixed system obtained is sealed, is put into the curing box of constant temperature, is supported at normal atmospheric pressure
Shield, curing temperature are 80 degrees Celsius, and curing time is 6 hours, are conserved again at room temperature 7 days again later.
Fig. 2 is the stress strain curve figure of the underground heat clay geology polymer of embodiment 2.Observe dregs geology in figure
The stress strain curve of polymer material, in strain early period, stress increases with the change rate of strain and is gradually increased, to answering
When change reaches 2.2%, stress, which reaches, is up to 17.5MPa.Material is destroyed later, and downward trend is presented in curve.
In example 2, when pretreatment of raw material, calcination temperature is 600 °C, compared with preferred 800 °C of calcination temperatures, this
The underground heat clay reactivity of temperature lower calcination weakens, and the geo-polymer performance of production slightly weakens, but due to reducing
Pretreated temperature, therefore reduce energy consumption, keep production technology more environmentally-friendly.
Embodiment 3
A kind of method of underground heat clay synthesis geo-polymer, includes the following steps,
(1) pretreatment of raw material: underground heat clay be ground to granularity 100% less than 1 millimeter after 60 °C dry 48 hours, and
It is calcined 2 hours for 800 °C in Muffle furnace；
(2) alkali-activator is added, is the amount in the raw material obtained in (1) by table 1, sodium silicate solution is added and sufficiently stirs
It mixes；
(3) step (2) mixed system obtained is poured into mold, and put on a vibration table, shaken 5 minutes, exclude gas
Bubble；
(4) step (3) mixed system obtained is sealed, is put into the curing box of constant temperature, is supported at normal atmospheric pressure
Shield, curing temperature are 80 degrees Celsius, and curing time is 6 hours, are conserved again at room temperature 7 days again later.
Fig. 3 is the stress strain curve figure of the underground heat clay geology polymer of embodiment 3.Observe dregs geology in figure
The stress strain curve of polymer material, in strain early period, stress increases with the change rate of strain and is gradually increased, to answering
When change reaches 2.0%, stress, which reaches, is up to 9.7MPa.Material is destroyed later, and downward trend is presented in curve.
In embodiment 3, the alkali-activator sodium silicate solution, the solution and preferred sodium hydroxide and sodium metasilicate
Mixed solution compare, raw material reduce, cost reduce.But since the alkalinity of exciting agent reduces, for swashing for underground heat clay
Decreased effectiveness is sent out, underground heat clay can not react completely, form geo-polymer heterogeneous, that hole is more.
Claims (10)
1. a kind of preparation method of underground heat clay base geological polymer, which comprises the following steps:
(1) underground heat clay pre-processes: underground heat clay being dried, after being ground to certain particle size, is calcined in Muffle furnace；
(2) alkali-activator is added into step (1) calcined raw material, is sufficiently stirred；
(3) mixed system that step (2) obtains is poured into mold, puts and vibrates on a vibration table, exclude bubble；
(4) mold of step (3) is sealed, is put into thermostatic curing case, is conserved at normal atmospheric pressure, is retransferred later
To conserving at room temperature.
2. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (1)
The drying condition, which is 60 DEG C, dries 48 hours.
3. according to a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step
(1) granularity is 100% less than 1 millimeter after the grinding.
4. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (1)
The muffle furnace is 550-800 DEG C, and calcination time is 2 hours.
5. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (2)
The alkali-activator is mixed with raw material 1:0.9-1:1.1 in mass ratio.
6. a kind of preparation method of underground heat clay base geological polymer according to claim 5, which is characterized in that the alkalinity
Exciting agent the preparation method comprises the following steps: sodium hydroxide and sodium metasilicate are mixed in proportion after, soluble in water as solute, mixing is equal
It is even.
7. a kind of preparation method of underground heat clay base geological polymer according to claim 6, it is characterised in that the hydrogen-oxygen
The molar ratio for changing sodium and sodium metasilicate is 1:1-1:2；The solute is mixed with water 1:1.7-1:2.5 in mass ratio.
8. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (3)
The time of vibration is 5-10 minutes.
9. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (4)
The curing temperature of the curing box is 60-80 DEG C, and curing time is 6 hours.
10. a kind of preparation method of underground heat clay base geological polymer according to claim 1, which is characterized in that step (4)
The curing time at room temperature is 7-10 days.
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| CN201811575113.9A CN109336434A (en) | 2018-12-21 | 2018-12-21 | A kind of preparation method of underground heat clay base geological polymer |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098281A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method thereof |
| CN107188442A (en) * | 2017-06-26 | 2017-09-22 | 苏州大学 | A kind of trade waste base geological polymer and preparation method thereof |
-
2018
- 2018-12-21 CN CN201811575113.9A patent/CN109336434A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098281A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method thereof |
| CN107188442A (en) * | 2017-06-26 | 2017-09-22 | 苏州大学 | A kind of trade waste base geological polymer and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| QIAN WAN 等: "Geothermal clay-based geopolymer binders Synthesis and microstructural characterization", 《APPLIED CLAY SCIENCE》 * |
| 左丽明等: "《近岸海域碱渣排放堆填场生态环境保护与修复技术》", 30 November 2018, 北京：地质出版社 * |
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Application publication date: 20190215 |