CN106587694B - A kind of solid exciting agent and its preparation process - Google Patents
A kind of solid exciting agent and its preparation process Download PDFInfo
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- CN106587694B CN106587694B CN201611156603.6A CN201611156603A CN106587694B CN 106587694 B CN106587694 B CN 106587694B CN 201611156603 A CN201611156603 A CN 201611156603A CN 106587694 B CN106587694 B CN 106587694B
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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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
-
- 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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention now provides a kind of solid exciting agent, and each raw material and parts by weight are respectively as follows: 5-50 parts of alkali metal hydroxide；50-95 parts of water glass solution；0.01-3 parts of additive；Alkali metal hydroxide be sodium hydroxide, potassium hydroxide, lithium hydroxide it is one or more；The additive be crystal seed, sodium aluminate it is one or two kinds of；The present invention can form the short chain state that silicon oxygen aluminium (- Si-O-Al-) is connected with the silicate in waterglass using aluminate, be conducive to the formation of geo-polymer, improve the launching efficiency of exciting agent, improve the stability of solid exciting agent.
Description
Technical field
The invention belongs to solid waste to utilize field, and in particular to a kind of solid exciting agent and its preparation process.
Background technique
1, geo-polymer is a kind of nothing that 3 D stereo reticular structure is made of AlO4 and SiO4 tetrahedral structural unit
Machine polymer, chemical formula are Mn {-(SiO2) zAlO2 } nwH2O.Geo-polymer is usually used exciting agent and is rich in sial
The inorganic mineral of hydrochlorate is reacted, and is prepared by processes such as mixing, molding, solidifications, and most common exciting agent system is
Alkali-activated carbonatite system.The action principle of alkali-activator is that aluminosilicate glass under the action of alkali-activator, in inorganic mineral is mutually sent out
Raw Al-O and Si-O key depolymerization fracture, forms the oxygen-octahedron and aluminum-oxygen tetrahedron of oligomeric state, then the silicon oxygen four of oligomeric state
Face body and aluminum-oxygen tetrahedron are connected with each other polymerization and form alkali aluminum silica gel body (the link form of-Si-O-Al-), with colloid amount
Increase, generate gelinite, final gel body precipitating coheres unreacted ore particle, forms geo-polymer.At present
Matter polymer technology above has in the application that the bulk solid wastes Treatment and recovery such as flyash, tailing, building waste utilizes
Great development space, and geo-polymer product construction material, Materials with High Strength, solid core solid waste material, sealing material,
There is application with heat-resisting material etc.；
2, the alkali-activator of geo-polymer preparation is divided into liquid exciting agent and two kinds of solid-state exciting agent, and the most commonly used is liquid
State exciting agent, the compound system of usually single water glass solution or alkali metal hydroxide and waterglass.Solid excitation
Agent using less, usually single alkali metal hydroxide, such exciting agent property stable in the air is poor, be easy inhale
Tide.The current most common usage mode is to mix liquid exciting agent with other powder materials, formation leather hard powder or
Add water to form slurry then to solidify by the modes machine-shaping such as compacting, extrusion, casting, granulation, prepare geo-polymer.
The geo-polymer of preparation has many advantages, such as that quality is light, intensity is high, fireproof heat insulating and acid-alkali-corrosive-resisting, the product function of formation
Strong, the long service life of property.
3, alkali-activator generally refers to the substances such as caustic alkali, the silicate of alkali metal, aluminate, phosphate, carbonate, mesh
Exciting agent used by the research and preparation of preceding geo-polymer is most of based on caustic alkali and waterglass.In addition to single kind
Alkali or alkali metal salt as exciting agent, can also be compound by two kinds of exciting agent, formed have more efficiency and economy
The composite exciting agent of benefit.By consulting Chinese patent data " a kind of flyash geo-polymer porous material and its manufacture work
Skill " (application number 201610126820.4), " a kind of alkali-activated carbonatite cementitious material and its preparation process " (application number
201410618006.5), " preparation process of geo-polymer and organic macromolecule composite gelled material " (application number
200910022112.6), " slag-fly ash complex solid exciting agent and its production method " (application number 201210091991.X)
Equal related patents, for the exciting agent of geo-polymer based on liquid, group is divided into waterglass or sodium hydroxide and waterglass
It is used in combination, and the component of solid exciting agent is generally sodium hydrate solid, sodium hydroxide and sodium salt is compound and solid-state silicic acid
Based on sodium.It was accordingly found that existing exciting agent there are the problem of it is as follows:
1. solution exciting agent needs specific container, it has not been convenient to storage and transport；
2. exciting agent needs ready-to-use；
Dissolved 3. alkali metal silicate salt solid exciting agent, under room temperature it is difficult, it is inconvenient to use, such exciting agent preparation
Geo-polymer properties of product are lower；
4. alkali metal hydroxide solid exciting agent, based on NaOH, KOH, alkalinity is stronger, easily absorb in air
Moisture deliquesces；
5. the condition of the preparation of solid exciting agent is more demanding (such as vacuum condition, ageing resolution for 24 hours with first-class), when preparation
Between it is long, the difficulty of technique is big, causes energy consumption higher.
Send out summary of the invention
For at present prepare exciting agent technology the problem of, the purpose of the present invention is prepare one kind be not required to it is ready-to-use
Solid exciting agent, can be directly used in mixed way with powder, can also be dissolved in the water use when needing, and dissolubility is good, convenient and efficient；
In addition, the present invention also provides a kind of preparation processes of solid exciting agent.
To achieve the purpose of the present invention, the present invention provides following technical schemes:
A kind of solid exciting agent, each raw material and parts by weight are respectively as follows:
5-50 parts of alkali metal hydroxide；
50-95 parts of water glass solution；
0.01-3 parts of additive；
Alkali metal hydroxide be sodium hydroxide, potassium hydroxide, lithium hydroxide it is one or more；
The additive be crystal seed, sodium aluminate it is one or two kinds of；
The mass percentage of the water glass solution is 50-90%.
The preparation process of solid exciting agent comprises the following steps that a, mixing: alkali metal hydroxide and additive is added
Into the container equipped with water glass solution, it is stirred 5-30min, formation temperature is more than 100 DEG C of transparent mixed solution；
B, cooling: agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
C, solidify: additive is added, persistently stir 5-25min, mixed solution acutely heating, temperature occurs and rises to 70-
At 100 DEG C, there is white crystal and muddy in mixed liquor, mixed solution stacked tray, to its crystallisation solidification, curing time 1-
10min；
C, finished product: cured exciting agent being crushed, is sieved, and encapsulation obtains solid exciting agent, is stored under room temperature.
Sieve 100 meshes used.
The waterglass is one of sodium silicate, potassium water glass etc. or a variety of.
The present invention has the advantages that
1, product is without ready-to-use；
2, product can be stored for a long time, and the transfer of long range is facilitated to convey；
3, product can directly act on raw material addition and use, also water-soluble rear use；
4, product can directly mix with other raw materials and (form geo-polymer premix) stores afterwards, does not fail in half a year；
5, crystal seed is added, mixing time when solidification can be shortened, shortens the time of exciting agent crystallization；
6, sodium aluminate can form the short chain state that silicon oxygen aluminium (- Si-O-Al-) is connected with the silicate in waterglass, be conducive to
The formation of geo-polymer improves the launching efficiency of exciting agent, improves the stability of solid exciting agent；
7, simple process, the time is short, consumes energy low.
Specific embodiment
In order to which the present invention is described in more detail, following preparating examples are provided.But the scope of the invention is not limited to this.
Embodiment 1:
Raw material: sodium hydroxide, sodium silicate (modulus 3.2, Baume degrees 37), crystal seed, sodium aluminate
Implementation method:
(1) mixed by the stirring of 20min by 100g sodium hydroxide, 10g sodium aluminate solution in 890g sodium silicate solution
It closes, obtains mixed solution；
(2) agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
(3) 2g crystal seed is added, continues continuous stirring 8min, acutely heating occurs, until there is a small amount of white opacity, it is molten mixing
Liquid pours clean plastic surface pallet into, solidifies 3min, obtains blocks of solid exciting agent；
(4) blocky exciting agent is crushed, sieved, taking powder under 100 meshes is No. 1 solid exciting agent, storage to
With；
After (5) No. 1 solid exciting agents are stored 3 months, 150g solid exciting agent, 1500g flyash and 150g are weighed respectively
Water obtains the mixture of leather hard after being sufficiently mixed 30min into mixing and blending machine；
(6) compression moulding obtains semi-finished product, and then semi-finished product are transferred in curing box, in 90% or more humidity, temperature
Solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance at 80 DEG C；
Embodiment 2:
Raw material: No. 1 solid exciting agent of storage 3 months
Implementation method:
(1) 150g solid exciting agent, 1500g flyash and 450g water are weighed respectively into mixing and blending machine, are sufficiently mixed
Mixture slurry is obtained after 30min；
(2) slurry is poured into specified mold, vibration 10min exhausts bubble and obtains semi-finished product on a vibration table, then
Semi-finished product are transferred in curing box, solidify under 90% or more humidity, temperature 60 C obtain for 24 hours moulding by casting geology it is poly-
Close object sample, test performance；
Embodiment 3:
Raw material: No. 1 solid exciting agent of storage 3 months
Implementation method:
(1) 180g solid exciting agent and 1000g flyash are weighed respectively into mixing and blending machine, and it is sufficiently mixed that 300g water is added
Mixing wet feed is obtained after closing 28min；
(2) wet feed obtains semi-finished product by vacuum-extruder extrusion molding, and then semi-finished product are transferred in curing box,
90% or more humidity solidifies the geo-polymer sample for obtaining extrusion molding for 24 hours, test performance at 80 DEG C of temperature；
Embodiment 4:
Raw material: No. 1 solid exciting agent
Implementation method:
(1) it takes No. 1 solid exciting agent of 150g and 1500g flyash to be pre-mixed respectively, obtains geo-polymer premix
Material；
(2) it after premix placed 6 months, is transferred in mixing and blending machine, is added after 150g water is sufficiently mixed 28min and obtains
To the mixture of leather hard；
(1) mixture will obtain semi-finished product by compression moulding, then semi-finished product are transferred in curing box, in humidity
90% or more, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance at 80 DEG C of temperature；
Embodiment 5:
Raw material: No. 1 solid exciting agent of storage 6 months
Implementation method:
(2) 150g solid exciting agent and 1500g flyash are weighed respectively into mixing and blending machine, and it is sufficiently mixed that 150g water is added
The mixture of leather hard is obtained after closing 28min；
(3) mixture will obtain semi-finished product by compression moulding, then semi-finished product are transferred in curing box, in humidity
90% or more, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance at 80 DEG C of temperature；
Embodiment 6:
Raw material: No. 1 solid exciting agent of storage 12 months
Implementation method:
(1) 150g solid exciting agent, 1500g flyash and 150g water are weighed respectively into mixing and blending machine, are sufficiently mixed
The mixed powder of leather hard is obtained after 30min；
(2) mixture will obtain semi-finished product by compression moulding, then semi-finished product are transferred in curing box, in humidity
90% or more, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance at 80 DEG C of temperature；
Embodiment 7:
Raw material: sodium hydroxide, potassium water glass (modulus 3.2, Baume degrees 40)
Implementation method:
(1) 350g sodium hydroxide is dissolved in 650g potassium water glass solution, by being stirred for 14min, is mixed
Solution；
(2) agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
(3) continue to stir 20min, acutely heating occurs in mixed solution, until there is a small amount of white opacity, at this point, mixing
Solution pours clean plastic surface pallet into, solidifies 5min, obtains blocks of solid exciting agent；
(4) blocky exciting agent is crushed, sieved, taking powder under 100 meshes is No. 2 solid exciting agents, storage to
With；
After (5) No. 2 solid exciting agents are stored 6 months, 150g solid exciting agent, 1000g flyash and 500g are weighed respectively
Miberal powder is added after 170g water is sufficiently mixed 30min into mixing and blending machine and obtains the mixture of leather hard；
(6) mixture will obtain semi-finished product by compression moulding, then semi-finished product are transferred in curing box, in humidity
90% or more, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance at 80 DEG C of temperature；
Embodiment 8:
Raw material: potassium hydroxide, sodium silicate (modulus 3.2, Baume degrees 37), sodium aluminate
Implementation method:
(1) mixed by the stirring of 20min by 150g potassium hydroxide and 20g sodium aluminate solution in 830g sodium silicate solution
It closes, obtains mixed solution；
(2) agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
(3) continue stir about 25min, acutely heating occurs in mixed solution, until there is a small amount of white opacity, mixed solution
It pours clean plastic surface pallet into, solidifies 8min, obtain blocks of solid exciting agent；
(4) blocky exciting agent is crushed, sieved, taking powder under 100 meshes is No. 3 solid exciting agents, storage to
With；
After (5) No. 3 solid exciting agents are stored 6 months, 200g solid exciting agent and 1000g kaolin are weighed respectively, are arrived mixed
It closes in blender, is added after 140g water is sufficiently mixed 28min and obtains leather hard mixture；
(6) mixture obtains semi-finished product by compression moulding, then semi-finished product is transferred in curing box, in humidity 90%
More than, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance under temperature 70 C；
Embodiment 9:
Raw material: lithium hydroxide, sodium silicate (modulus 3.2, Baume degrees 37), crystal seed implementation method:
(1) 80g lithium hydroxide is dissolved in 920g sodium silicate solution, by being stirred for 20min, obtains mixing molten
Liquid；
(2) agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
(3) 0.5g crystal seed is added, continues to stir 13min, acutely heating occurs in mixed solution, until it is muddy a small amount of white occur
It is turbid, mixed solution is poured into clean plastic surface pallet, solidifies 10min, obtain blocks of solid exciting agent；
(4) blocky exciting agent is crushed, sieved, taking powder under 100 meshes is No. 4 solid exciting agents, storage to
With；
(5) after solid exciting agent is stored 6 months, No. 4 solid exciting agents of 200g, 800g flyash and 350g are weighed respectively
Kaolin is added after 180g water is sufficiently mixed 30min into mixing and blending machine and obtains the mixture of leather hard；
(6) mixture obtains semi-finished product by compression moulding, then semi-finished product is transferred in curing box, in humidity 90%
More than, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance under temperature 60 C；
Embodiment 10:
Raw material: sodium hydroxide, sodium silicate (modulus 2.6, Baume degrees 30), crystal seed, sodium aluminate
Implementation method:
(1) mixed by the stirring of 20min by 350g sodium hydroxide and 25g sodium aluminate solution in 615g potassium water glass solution
It closes, obtains mixed solution；
(2) agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
(3) 1.5g crystal seed is added, continues stir about 8min, acutely heating occurs, until there is a small amount of white opacity, mixing
Solution pours clean plastic surface pallet into, solidifies 7min, obtains blocks of solid exciting agent；
(4) blocky exciting agent is crushed, sieved, taking powder under 100 meshes is No. 5 solid exciting agents, storage to
With；
After (5) No. 5 solid exciting agents are stored 6 months, weigh respectively No. 4 solid exciting agents of 200g, 800g flyash and
350g miberal powder is added after 110g water is sufficiently mixed 30min into mixing and blending machine and obtains leather hard mixture；
(6) mixture obtains semi-finished product by compression moulding, then semi-finished product is transferred in curing box, in humidity 90%
More than, solidify the geo-polymer sample for obtaining compression moulding for 24 hours, test performance under temperature 70 C；
The performance of 1 embodiment sample of table
By above data as can be seen that the embodiment of the present invention 1-10 solid exciting agent powder store time either 3
A month or 12 months, performance all show well, but during preparing geo-polymer sample with flyash, miberal powder, suppresses
Geo-polymer sample after molding is significantly improved than moulding by casting and the compression strength of extrusion molding.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of for anyone skilled in the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (3)
1. a kind of solid exciting agent, it is characterised in that: each raw material and parts by weight are respectively as follows:
5-50 parts of alkali metal hydroxide；
50-95 parts of water glass solution；
0.01-3 parts of additive；
Alkali metal hydroxide be sodium hydroxide, potassium hydroxide, lithium hydroxide it is one or more；
The additive is crystal seed and sodium aluminate；
The mass percentage of the water glass solution is 50-90%；
Its step of preparation process is as follows: a, mixing: alkali metal hydroxide and sodium aluminate being added to equipped with water glass solution
In container, it is stirred 5-30min, formation temperature is more than 100 DEG C of transparent mixed solution；
B, cooling: agitating solution makes system temperature be reduced to room temperature under conditions of water-bath；
C, solidify: crystal seed is added, persistently stir 5-25min, mixed solution acutely heating, temperature occurs and rises to 70-100 DEG C
When, there is white crystal and muddy in mixed liquor, mixed solution stacked tray, to its crystallisation solidification, curing time 1-10min；
D, finished product: cured exciting agent being crushed, is sieved, and encapsulation obtains solid exciting agent, is stored under room temperature.
2. a kind of solid exciting agent according to claim 1, it is characterised in that: sieve 100 meshes of use.
3. a kind of solid exciting agent according to claim 1, it is characterised in that: the waterglass is sodium silicate, potassium water
One of glass is a variety of.
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| CN110550932A (en) * | 2019-09-11 | 2019-12-10 | 上海海顾新材料科技有限公司 | method for hydrothermal preparation of high-strength building material from siliceous tailings by steam |
| CN111606612B (en) * | 2020-06-14 | 2022-04-22 | 东北林业大学 | Alkali-activated cementitious materials and methods of use thereof |
| CN115362886B (en) * | 2022-08-25 | 2024-06-04 | 国家电投集团江西中业兴达电力实业有限公司 | Fly ash stacking dust-raising prevention method |
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| CN102633461A (en) * | 2012-03-22 | 2012-08-15 | 内蒙古科技大学 | Composite gel material and preparation method thereof |
| CN104016609A (en) * | 2014-07-01 | 2014-09-03 | 把正春 | Method for preparing ferronickel-slag environment-friendly active mineral material addition excitant |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
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| CN102633461A (en) * | 2012-03-22 | 2012-08-15 | 内蒙古科技大学 | Composite gel material and preparation method thereof |
| CN104016609A (en) * | 2014-07-01 | 2014-09-03 | 把正春 | Method for preparing ferronickel-slag environment-friendly active mineral material addition excitant |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
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