CN110128045A - II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method - Google Patents
II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method Download PDFInfo
- Publication number
- CN110128045A CN110128045A CN201910361031.2A CN201910361031A CN110128045A CN 110128045 A CN110128045 A CN 110128045A CN 201910361031 A CN201910361031 A CN 201910361031A CN 110128045 A CN110128045 A CN 110128045A
- Authority
- CN
- China
- Prior art keywords
- exciting agent
- aquation
- gypsum
- fast hydration
- anhydrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C04B28/14—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 calcium sulfate cements
- C04B28/16—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement
-
- 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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
Abstract
The invention belongs to the field of building materials, are related to II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method, and exciting agent includes following each substance: activity excitant, dihydrate gypsum crystal seed, aqueous solution.Fast hydration method includes the following steps: Step 1: the grinding of 30min or more is carried out to anhydrite, until its specific surface area is not less than 500m2·kg‑1；Step 2: by anhydrite, activity excitant, dihydrate gypsum crystal seed, aqueous solution by feeding intake after formula metering, and stirred for 24 hours at 0-42 DEG C；Step 3: hydrated product dehydrated alcohol is terminated aquation after reaching the aquation terminal of setting, filtered with fast grade filter paper, and washed 2~3 times with dehydrated alcohol；Step 4: the hydrated product after washing is dry to constant weight in 45~50 DEG C of vacuum ovens, the content of its crystallization water is surveyed, corresponding aquation rate is calculated.The fast hydration method of the application is able to achieve the fast hydration of gypsum, and energy conservation and environmental protection.
Description
Technical field
The invention belongs to the field of building materials, are related to gypsum aquation field, and in particular to a kind of II type anhydrous gypsum is quick
Aquation exciting agent and fast hydration method are especially dihydrate gypsum and one day more particularly to II type anhydrous gypsum fast hydration
The method that significantly increases of aquation rate.
Background technique
II type anhydrous gypsum belongs to one kind of anhydrite, and since it is insoluble in water, hydration activity is very poor, condenses firm time
It grows, or even does not coagulate hardening in some time, do not have early strength, anhydrite is caused not have in the long period
To abundant application.But anhydrite has potential gelling, by modified manufactured plastics products for building with other gypsum systems
Product are the same, have it is light, prevent fires, convenient, the small, insulation of deformation of constructing, it is affine to human body it is harmless, recyclable, do not produce
The advantages that raw building waste, can be used as industrial production and building materials for civilan use, therefore improving hydration activity is that anhydrite resource has
Imitate the key utilized.
Researcher both domestic and external from grinding mode, calcine, mix exciting agent etc. activation modification has been carried out to anhydrite and grind
Study carefully." activation of anhydrite grinding and water-reducing agent disperse and grind aid work have been published on " nonmetallic ore " the 6th phase of volume 31 in 2008
With ".This article is studies have shown that different grinding mode makes the particle shape of anhydrite, specific surface area, size distribution have larger difference
It is different, the release of its hydration activity is had a major impact, the raising of grinding fineness can significantly improve aquation solubility property.In 2011
" Changjiang University's report " the 4th phase of volume 8 on publish " natural anhydrite activity excitation progress ".This article system introduction is hard
The main method of gypsum activity excitation causes to dissolve activity change it is mentioned that calcining is distorted anhydrite lattice structure,
Suitable calcination temperature can accelerate the aquation of anhydrite, shorten setting time.Suitable exciting agent can make anhydrite hydration molten
It solves rate to accelerate, crystallization time advance, grain refinement, and generates preferable gelling characteristic.In " environmental science and skill in 2010
Art " publish that " calcium sulfate is in Ca-Mg-K-Cl-H on the 5th phase of volume 332Solubility studies in O system conversion process ".This article refers to
Out, calcium sulfate solubility is affected by other components concentration, in chemical analysis, is usually added into the solution of weak electrolyte
When strong electrolyte, since effects of ion total concentration increases, the mutual restraining function enhancing of interionic, so that weak electrolyte dissociation
Anions and canons combine the chance for forming molecule to reduce, so that weak electrolyte molecular concentration be made to reduce, ion concentration is increased accordingly,
Degree of dissociation increases, so that solubility increases, the solubility of calcium sulfate directly influences its hydration process, therefore selects suitably
Electrolyte is conducive to aquation.
But the aquation rate of most of anhydrite is lower and main research concentrates in 3 days, 10 days or 28 days aquations, than
Such as application No. is pass through addition compound active exciting agent in 200410013136.2 (methods of fluorgypsum recycling modification)
And basic matterial, it adds water and stirs 3-5 minutes, and after accumulating showering curing 10 days, the dihydrate gypsum content measured is only 52.3%.
The fluorgypsum wherein used does not have grinding, and particle is thicker, and compound active exciting agent is ineffective, causes anhydrite hydration time-consuming
Length, speed are slow, and aquation rate is low；Water paste ratio is small, and the product after aquation is non-powdered, is unfavorable for the development and utilization of subsequent product；Its
Complex process, it is inconvenient, a large amount of places need to be occupied, are unfavorable for being widely applied.
Summary of the invention
The application provides a kind of method of II type anhydrous gypsum fast hydration, is able to achieve the fast hydration of gypsum, and
Energy conservation and environmental protection.
To realize the above-mentioned technical purpose, the technical solution that the application takes is a kind of II type anhydrous gypsum fast hydration use
Exciting agent, including following each substance: activity excitant, dihydrate gypsum crystal seed, aqueous solution.
As the improved technical solution of the present invention, in the anhydrite of 98-103 parts by weight, the weight of each substance of exciting agent
Part are as follows: 4-6 parts of activity excitant, 20-50 parts of dihydrate gypsum crystal seed, the additional amount of aqueous solution guarantees that water material mass ratio is 5-7.
As the improved technical solution of the present invention, the anhydrite is industry by-product gypsum, and specific surface area is not less than
500m2·kg-1。
As the improved technical solution of the present invention, the anhydrite is calcined ardealite or fluorgypsum.
As the improved technical solution of the present invention, the activity excitant include 12 hydrazine aluminum sulfate potassium, sodium bisulfate,
One or more of potassium bichromate, sodium oxalate, calcining alum.
As the improved technical solution of the present invention, the calcining alum is to use 12 hydrazine aluminum sulfate potassium at 450 DEG C
Simultaneously grind into powder obtains calcining 1h.
As the improved technical solution of the present invention, the dihydrate gypsum crystal seed is one of synthetic gypsum or bunt gypsum,
Its specific surface area is not more than 160m2·kg-1。
As the improved technical solution of the present invention, the aqueous solution includes deionized water, tap water, Na2SO4Electrolyte is molten
Liquid, NaCl electrolyte solution, CaCl2One of electrolyte solution, HCl electrolyte solution are a variety of；Wherein, Na2SO4Electrolysis
Na in matter solution2SO4Molar concentration is 1.17 × 10-2mol/L-1.06mol/L；NaCl molar concentration in NaCl electrolyte solution
For 0.171mol/L-5.13mol/L；CaCl2CaCl in electrolyte solution2Molar concentration is 9.0 × 10-2mol/L-1.35mol/
L；HCl mass fraction is 0.01%-5% in HCl electrolyte solution.
The II type anhydrous gypsum fast hydration method based on above-mentioned exciting agent that another object of the present invention is to provide a kind of,
Include the following steps:
Step 1: the grinding of 30min or more is carried out to anhydrite, until its specific surface area is not less than 500m2·kg-1；
Step 2: by anhydrite, activity excitant, dihydrate gypsum crystal seed, aqueous solution by feeding intake after formula metering, and in 0-
It is stirred for 24 hours at 42 DEG C；
Step 3: hydrated product dehydrated alcohol is terminated aquation after reaching the aquation terminal of setting, taken out with fast grade filter paper
Filter, and washed 2~3 times with dehydrated alcohol；
Step 4: the hydrated product after washing is dry to constant weight in 45~50 DEG C of vacuum ovens, survey its crystallization water
Corresponding aquation rate is calculated in content.
Beneficial effect
It is an object of the invention in view of the above shortcomings of the prior art, the technical solution of use makes one day water of anhydrite
Rate reaches 80 or more percent, and the aquation period is short, and the product after aquation is powdery granule, is conducive to subsequent product exploitation benefit
With, while this method operation is convenient, occupied area is small, and environmentally protective, the NaCl used can be used as the raw material of electrolytic saltwater
It is recycled, Na2SO4And CaCl2It may be recovered production bunt gypsum, HCl can be used to the hydrometallurgy etc. of rare metal.
To sum up, the technical solution of the application had not only realized the fast hydration of anhydrite, but also realized the environment-friendly type recycling of exciting agent
It utilizes.
Detailed description of the invention
Fig. 1 is painted the process flow diagram of II type anhydrous gypsum fast hydration of the application；
Shape appearance figure (non-grinding, specific surface area 174.7m in Fig. 2 illustrated embodiments 2 before grinding2·kg-1)；
Shape appearance figure (grinding 30min specific surface area 594.2m in Fig. 3 illustrated embodiments 2 after grinding2·kg-1)；
Fig. 4 is painted the dihydrate gypsum crystal seed shape appearance figure that the application selects synthetic gypsum；
Fig. 5 is painted the dihydrate gypsum crystal seed shape appearance figure that the application selects bunt gypsum；
Fig. 6 is painted the XRD diffraction pattern of product after 2 aquation of the embodiment of the present application；
Fig. 7 is painted the XRD diffraction pattern of product after 4 aquation of the embodiment of the present application；
Fig. 8 is painted 1000 times of SEM photograph of product after 2 aquation of the embodiment of the present application；
Fig. 9 is painted the SEM photograph under 1000 times of product after 4 aquation of the embodiment of the present application.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with attached drawing of the present invention and implement
Example, is clearly and completely described technical solution of the present invention.Obviously, described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art are being not necessarily to
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
As shown in Figure 1, the application activates anhydrite by grinding, exciting agent excites anhydrite activity, dihydrate gypsum crystal seed
Anhydrite hydration is induced, while improving the hydration rate and aquation rate of anhydrite under the booster action of electrolyte.
The application II type anhydrous gypsum fast hydration exciting agent of one kind, including following each substance: activity excitant, two water
Gypsum seed, aqueous solution.
Hydration efficiency in order to better improve reduces anhydrite hydration cost, and the control of exciting agent dosage of each component is as follows:
In the anhydrite of 98-103 parts by weight, the parts by weight of each substance of exciting agent are as follows: 4-6 parts of activity excitant, dihydrate gypsum crystal seed 20-
50 parts, the additional amount of aqueous solution guarantees that water material mass ratio is 5-7.
Wherein, the anhydrite is industry by-product gypsum, and such as calcined ardealite or fluorgypsum, specific surface area be not small
In 500m2·kg-1。
The activity excitant includes 12 hydrazine aluminum sulfate potassium, sodium bisulfate, potassium bichromate, sodium oxalate, calcining alum
One or more of.The calcining alum is to calcine 1h and grind into powder at 450 DEG C using 12 hydrazine aluminum sulfate potassium
It obtains.
The dihydrate gypsum crystal seed is one of synthetic gypsum or bunt gypsum, and specific surface area is not more than 160m2·kg-1。
The aqueous solution includes deionized water, tap water, Na2SO4Electrolyte solution, NaCl electrolyte solution, CaCl2Electricity
One of electrolyte solution, HCl electrolyte solution are a variety of；Wherein, Na2SO4Na in electrolyte solution2SO4Molar concentration is
1.17×10-2mol/L-1.06mol/L；NaCl molar concentration is 0.171mol/L-5.13mol/L in NaCl electrolyte solution；
CaCl2CaCl in electrolyte solution2Molar concentration is 9.0 × 10-2mol/L-1.35mol/L；HCl matter in HCl electrolyte solution
Amount score is 0.01%-5%.
Strong electrolytic solution, such as Na are added in calcium sulphate soln2SO4, the electrolyte such as NaCl, HCl, pass through same ion
Effect and salt effect directly affect heat evolution velocity, are embodied in change the solubility of calcium sulfate after the solubility of calcium sulfate increases
In the raising of aquation rate.
The II type anhydrous gypsum fast hydration method based on above-mentioned exciting agent that another object of the present invention is to provide a kind of,
Include the following steps:
Step 1: the grinding of 30min or more is carried out to anhydrite, until its specific surface area is not less than 500m2·kg-1；
Step 2: by anhydrite, activity excitant, dihydrate gypsum crystal seed, aqueous solution by feeding intake after formula metering, and in 0-
It is stirred for 24 hours at 42 DEG C；
Step 3: hydrated product dehydrated alcohol is terminated aquation after reaching the aquation terminal of setting, taken out with fast grade filter paper
Filter, and washed 2~3 times with dehydrated alcohol；
Step 4: the hydrated product after washing is dry to constant weight in 45~50 DEG C of vacuum ovens, survey its crystallization water
Corresponding aquation rate is calculated in content.
Anhydrite is carried out grinding by the present invention, makes the specific surface area of particle not less than 500m2·kg-1, can after particle refinement
Increase the solubility of particle, is conducive to hydration process.For example it selects at 700 DEG C and calcines the calcined ardealite after 1h, non-grinding
Preceding specific surface area is 174.7m2·kg-1, the specific surface area after thorough grinding is 588m2·kg-1, aquation rate after aquation one day
Respectively 0.3% and 4.9%, increase 4.6%.
A small amount of activity excitant is added again, and hydration rate is obviously accelerated.For example it selects at 700 DEG C and calcines the phosphorus stone after 1h
Cream selects 100 parts of gypsum, 5 parts of KAl (SO4)2·12H2O, water material mass ratio are 5.5 to feed intake reaction, and the aquation rate after one day is
73.3%, the aquation rate 0.3% than non-grinding increases 73%, and the aquation rate 4.9% than grinding increases 68.4%.
The hydration process of anhydrite is a dissolution-Crystallization Process, and dihydrate gypsum can accelerate crystal as crystal seed addition
Precipitation and molding, therefore the dihydrate gypsum crystal seed that centainly matches of addition can further speed up hydration process.For example select 100
The fluorgypsum that part grinding is crossed, 5 parts of calcining alum, 20 parts of dihydrate gypsum crystal seeds, the aquation rate after one day is 82.3%, than unused two
The aquation rate of water gypsum seed induction aquation increases 9.7%.
Calcium sulfate solubility is affected by other components concentration, in chemical analysis, usually toward the solution of weak electrolyte
When middle addition strong electrolyte, since effects of ion total concentration increases, the mutual restraining function enhancing of interionic, so that weak electrolyte
The anions and canons of dissociation combine the chance for forming molecule to reduce, so that weak electrolyte molecular concentration be made to reduce, ion concentration is corresponding
Increase, degree of dissociation increases, so that solubility increases, the solubility of calcium sulfate directly influences its hydration process, therefore selects
Suitable electrolyte is conducive to aquation.Such as 3.5 × 10-1The Na of mol/L2SO4After strong electrolytic solution replaces water to carry out aquation grinding
Fluorgypsum, one day aquation rate is 86.3%, higher than the aquation rate 82.3% after unused electrolyte aquation by 4%.
Aquation is carried out under this method low temperature, energy consumption is few, and required place is little, and the product after aquation is powdery granule, benefit
It is developed and used in subsequent product.
This method is environmentally protective, raw material recoverable, and the raw material that wherein NaCl can be used as electrolytic saltwater is returned
It receives, Na2SO4And CaCl2It may be recovered production bunt gypsum, HCl can be used to the hydrometallurgy etc. of rare metal.
Concrete application example is as follows: all numbers herein are parts by weight.
Embodiment one:
(the phosphorus stone of other temperature lower calcination different times can also be selected to the ardealite after calcining 1h at 700 DEG C first
Cream, the present embodiment are only wherein any one example) grinding that carries out 40min, until its specific surface area is not less than 500m2·kg-1,
(shape appearance figure that fluorgypsum before and after grinding is shown in Fig. 2-Fig. 3 respectively) the present embodiment grinding is to 581.5m2·kg-1, then take 93
The calcined ardealite of part, 5 parts of KAl (SO4)2·12H2O (Potassium aluminum sulfate dodecahydrate), 1 part of sodium bisulfate, 50 parts of dihydrate gypsums
Crystal seed (for the present embodiment using being synthetic gypsum, crystal seed shape appearance figure is as shown in Figure 4), the ratio for being 5.5 according to water material mass ratio
By deionized water, HCl electrolyte solution (mass fraction of HCl electrolyte solution be 0.01%-5%) investment reactor, 30 DEG C
Lower stirring for 24 hours, reaches and hydrated product dehydrated alcohol is terminated aquation after the aquation terminal of setting, filtered with fast grade filter paper, and
It is washed 2~3 times with dehydrated alcohol, it is dry to constant weight in 45~50 DEG C of vacuum ovens, the content of its crystallization water is surveyed, is calculated
Corresponding aquation rate is 73.3%.
Embodiment two:
The no less than grinding of 40min is carried out to fluorgypsum first, until its specific surface area is not less than 594.2m2·kg-1, take
103 parts of fluorgypsums, 20 parts of dihydrate gypsum crystal seeds, according to water material mass ratio are 7 at 4 parts of sodium oxalates (potassium bichromate also can be selected)
Tap water is put into reactor by ratio, is stirred for 24 hours at 25 DEG C (can also be in temperature between 0-25 DEG C), is reached setting
Hydrated product dehydrated alcohol is terminated into aquation after aquation terminal, is filtered with fast grade filter paper, and washed 2~3 times with dehydrated alcohol,
In 45~50 DEG C of vacuum ovens dryings to constant weight, the content of its crystallization water is surveyed, it is 82.3% that corresponding aquation rate, which is calculated,
The SEM of product schemes as shown in figure 8, XRD is as shown in Figure 6 after its aquation.
Embodiment three:
The grinding of 30min is carried out to calcined ardealite first, until its specific surface area is 572m2·kg-1, take 100 parts
Calcined ardealite, 5 parts of calcining alum, 40 parts of dihydrate gypsum crystal seeds, be 6 according to water material mass ratio ratio by 2.57mol/
The NaCl electrolyte solution of L puts into reactor, is stirred hydrated product nothing after the aquation terminal for reaching setting for 24 hours at 10 DEG C
Water-ethanol terminates aquation, is filtered with fast grade filter paper, and washed 2~3 times with dehydrated alcohol, dry in 45~50 DEG C of vacuum ovens
To constant weight, the content of its crystallization water is surveyed, it is 85.3% that corresponding aquation rate, which is calculated,.
Example IV:
The grinding of 60min is carried out to fluorgypsum first, until its specific surface area is 593.5m2·kg-1, take 100 parts of fluorgypsums,
1 part of calcining alum, 1 part of potassium acid sulfate, 2 parts of sodium oxalates, (it is bunt gypsum that the present embodiment uses to 50 parts of dihydrate gypsum crystal seeds, brilliant
Kind of shape appearance figure is as shown in Figure 5), the ratio for being 6 according to water material mass ratio is by the NaCl of 0.856mol/L and 7.04 × 10-2mol/L
Na2SO4Compound electrolyte solution puts into reactor, stirs hydrated product at 15 DEG C after the aquation terminal for reaching setting for 24 hours
Aquation is terminated with dehydrated alcohol, is filtered with fast grade filter paper, and washed 2~3 times with dehydrated alcohol, in 45~50 DEG C of vacuum ovens
Drying surveys the content of its crystallization water, it is 89.6% that corresponding aquation rate, which is calculated, to constant weight.The SEM figure of product after its aquation
As shown in figure 9, XRD is as shown in Figure 7.
Above-mentioned gained Examples 1 to 4 is carried out by GB/T 17669.2-1999 " measurement of building gypsum crystal water content "
The measurement of the crystallization water, aquation rate, that is, aquation account for the percentage composition of former anhydrite total amount at the anhydrite of dihydrate gypsum.
The above is only embodiments of the present invention, and the description thereof is more specific and detailed, and but it cannot be understood as right
The limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention
Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (9)
1. a kind of II type anhydrous gypsum fast hydration exciting agent, which is characterized in that including following each substance: activity excitant,
Dihydrate gypsum crystal seed, aqueous solution.
2. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 1, which is characterized in that in 98-103
In the anhydrite of parts by weight, the parts by weight of each substance of exciting agent are as follows: 4-6 parts of activity excitant, 20-50 parts of dihydrate gypsum crystal seed,
The additional amount of aqueous solution guarantees that water material mass ratio is 5-7.
3. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 2, which is characterized in that the admant
Cream is industry by-product gypsum, and specific surface area is not less than 500m2·kg-1。
4. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 2 or 3, which is characterized in that described
Anhydrite is calcined ardealite or fluorgypsum.
5. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 1 or 2, which is characterized in that described
Activity excitant includes one of 12 hydrazine aluminum sulfate potassium, sodium bisulfate, potassium bichromate, sodium oxalate, calcining alum or several
Kind.
6. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 5, which is characterized in that the calcining
Alum is to calcine 1h at 450 DEG C and grind into powder obtains using 12 hydrazine aluminum sulfate potassium.
7. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 1 or 2, which is characterized in that described
Dihydrate gypsum crystal seed is one of synthetic gypsum or bunt gypsum, and specific surface area is not more than 160m2·kg-1。
8. a kind of II type anhydrous gypsum fast hydration exciting agent according to claim 1 or 2, which is characterized in that described
Aqueous solution includes deionized water, tap water, Na2SO4Electrolyte solution, NaCl electrolyte solution, CaCl2Electrolyte solution, HCl
One of electrolyte solution is a variety of；Wherein, Na2SO4Na in electrolyte solution2SO4Molar concentration is 1.17 × 10-2mol/
L-1.06mol/L；NaCl molar concentration is 0.171mol/L-5.13mol/L in NaCl electrolyte solution；CaCl2Electrolyte is molten
CaCl in liquid2Molar concentration is 9.0 × 10-2mol/L-1.35mol/L；HCl mass fraction is in HCl electrolyte solution
0.01%-5%.
9. a kind of any II type anhydrous gypsum fast hydration method based on any exciting agent of claim 1-8,
It is characterized by comprising the following steps:
Step 1: the grinding of 30min or more is carried out to anhydrite, until its specific surface area is not less than 500m2·kg-1；
Step 2: by anhydrite, activity excitant, dihydrate gypsum crystal seed, aqueous solution by feeding intake after formula metering, and at 0-42 DEG C
Lower stirring is for 24 hours；
Step 3: hydrated product dehydrated alcohol is terminated aquation after reaching the aquation terminal of setting, filtered with fast grade filter paper, and
It is washed 2~3 times with dehydrated alcohol；
Step 4: the hydrated product after washing is surveyed into the content of its crystallization water in 45~50 DEG C of vacuum ovens dryings to constant weight,
Corresponding aquation rate is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361031.2A CN110128045A (en) | 2019-04-30 | 2019-04-30 | II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361031.2A CN110128045A (en) | 2019-04-30 | 2019-04-30 | II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110128045A true CN110128045A (en) | 2019-08-16 |
Family
ID=67575884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910361031.2A Pending CN110128045A (en) | 2019-04-30 | 2019-04-30 | II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110128045A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170667A (en) * | 2020-01-10 | 2020-05-19 | 江苏一夫科技股份有限公司 | Dihydrate gypsum and preparation method thereof |
| CN112194446A (en) * | 2020-09-27 | 2021-01-08 | 荆门千年健医疗保健科技有限公司 | Gypsum casting forming method, gypsum formed product and application |
| CN112939561A (en) * | 2021-03-31 | 2021-06-11 | 武汉三源特种建材有限责任公司 | Phosphogypsum-based light plastering gypsum and preparation method thereof |
| WO2021172974A1 (en) * | 2020-02-24 | 2021-09-02 | Daniel Davila Barrientos | Enhanced stable compositions based on synthetic anhydrite type ii, for the manufacture of construction units and mortars, methods for manufacturing same and uses thereof |
| CN115057639A (en) * | 2022-07-26 | 2022-09-16 | 一夫科技股份有限公司 | Method for preparing alpha semi-hydrated gypsum from fluorgypsum |
| CN115466065A (en) * | 2022-09-19 | 2022-12-13 | 一夫科技股份有限公司 | Phosphorus-based II-type anhydrous gypsum cementing material and activation method thereof |
| CN115947553A (en) * | 2023-02-15 | 2023-04-11 | 一夫科技股份有限公司 | Method for preparing alpha high-strength gypsum from natural anhydrite |
| CN116246722A (en) * | 2023-03-10 | 2023-06-09 | 一夫科技股份有限公司 | Intelligent control method and system for quick hydration of anhydrite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0520376B2 (en) * | 1984-11-21 | 1993-03-19 | Fuji Funen Kenzai Kogyo Kk | |
| CN1076678A (en) * | 1993-03-20 | 1993-09-29 | 东南大学 | Keene's cement |
| CN101423350A (en) * | 2008-11-21 | 2009-05-06 | 江苏省一夫新材料科技有限公司 | Anhydrite cement for building and method for producing the same |
| CN103408278A (en) * | 2013-08-19 | 2013-11-27 | 四川省建材工业科学研究院 | Method for preparing anhydrite cementing slurry with ardealite |
| CN109608078A (en) * | 2019-01-24 | 2019-04-12 | 长江师范学院 | Half water building gypsum coagulant of one kind and its preparation method and application |
-
2019
- 2019-04-30 CN CN201910361031.2A patent/CN110128045A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0520376B2 (en) * | 1984-11-21 | 1993-03-19 | Fuji Funen Kenzai Kogyo Kk | |
| CN1076678A (en) * | 1993-03-20 | 1993-09-29 | 东南大学 | Keene's cement |
| CN101423350A (en) * | 2008-11-21 | 2009-05-06 | 江苏省一夫新材料科技有限公司 | Anhydrite cement for building and method for producing the same |
| CN103408278A (en) * | 2013-08-19 | 2013-11-27 | 四川省建材工业科学研究院 | Method for preparing anhydrite cementing slurry with ardealite |
| CN109608078A (en) * | 2019-01-24 | 2019-04-12 | 长江师范学院 | Half water building gypsum coagulant of one kind and its preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| （苏）布德尼柯夫等: "《石膏的研究与应用 增订第三版》", 31 December 1963, 中国工业出版社 * |
| 董坚等: "磷石膏生产硬石膏的研究", 《山东建材》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170667A (en) * | 2020-01-10 | 2020-05-19 | 江苏一夫科技股份有限公司 | Dihydrate gypsum and preparation method thereof |
| WO2021172974A1 (en) * | 2020-02-24 | 2021-09-02 | Daniel Davila Barrientos | Enhanced stable compositions based on synthetic anhydrite type ii, for the manufacture of construction units and mortars, methods for manufacturing same and uses thereof |
| CN112194446A (en) * | 2020-09-27 | 2021-01-08 | 荆门千年健医疗保健科技有限公司 | Gypsum casting forming method, gypsum formed product and application |
| CN112194446B (en) * | 2020-09-27 | 2022-06-21 | 荆门千年健医疗保健科技有限公司 | Gypsum casting forming method, gypsum formed product and application |
| CN112939561A (en) * | 2021-03-31 | 2021-06-11 | 武汉三源特种建材有限责任公司 | Phosphogypsum-based light plastering gypsum and preparation method thereof |
| CN112939561B (en) * | 2021-03-31 | 2022-05-13 | 武汉三源特种建材有限责任公司 | Phosphogypsum-based light plastering gypsum and preparation method thereof |
| CN115057639A (en) * | 2022-07-26 | 2022-09-16 | 一夫科技股份有限公司 | Method for preparing alpha semi-hydrated gypsum from fluorgypsum |
| CN115466065A (en) * | 2022-09-19 | 2022-12-13 | 一夫科技股份有限公司 | Phosphorus-based II-type anhydrous gypsum cementing material and activation method thereof |
| CN115466065B (en) * | 2022-09-19 | 2023-08-29 | 一夫科技股份有限公司 | Phosphorus-based II type anhydrous gypsum cementing material and activation method thereof |
| CN115947553A (en) * | 2023-02-15 | 2023-04-11 | 一夫科技股份有限公司 | Method for preparing alpha high-strength gypsum from natural anhydrite |
| CN116246722A (en) * | 2023-03-10 | 2023-06-09 | 一夫科技股份有限公司 | Intelligent control method and system for quick hydration of anhydrite |
| CN116246722B (en) * | 2023-03-10 | 2023-11-28 | 一夫科技股份有限公司 | Intelligent control method and system for quick hydration of anhydrite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110128045A (en) | II type anhydrous gypsum fast hydration exciting agent of one kind and fast hydration method | |
| CN102603219B (en) | Process for preparing high-activity semi-hydrated gypsum cementing material and gypsum product by aid of phosphorous gypsum | |
| CN105174760B (en) | A kind of method that dihydrate gypsum prepares αsemiwatergypsum | |
| CN101565293B (en) | modified phosphogypsum and preparation method thereof | |
| EP3351506A1 (en) | Method for producing phosphoric acid and by-producing alpha-hemihydrate gypsum by wet-process | |
| CN101607741B (en) | Method for preparing iron oxide red by byproduct ferrous sulfate of titanium dioxide | |
| CN103011642B (en) | Method for preparing high-strength alpha-type hemihydrate gypsum by utilizing calcium carbide sludge modified phosphogypsum with normal pressure hydrothermal method | |
| CN105217590A (en) | A kind of method of producing phosphoric acid by wet process by-product αsemiwatergypsum and high purity high whiteness αsemiwatergypsum | |
| CN104876528B (en) | A kind of method that utilization lithium aluminium houghite prepares the early injection pulp material of dual liquid type | |
| CN104986789A (en) | Method for preparing alpha-semi-hydrated gypsum in controllable mode through acid wastewater produced by producing titanium dioxide | |
| CN103288118A (en) | Method for dissociating industrial by-product gypsum and crystallizing to grow calcium sulphate crystal whiskers | |
| CN101845132B (en) | Modified melamine high-efficiency water reducing agent with low cost | |
| CN104218270A (en) | Method for preparing tetrabasic lead sulfate by using acid leaching byproduct in production of lead acid storage battery positive electrode plate | |
| CN107082653A (en) | A kind of utilization calcium and magnesium mud is the method that raw material prepares moderate-element Liquid Fertilizer | |
| CN104928758A (en) | Mixed additives and method for producing anhydrous dead-burned type of calcium sulfate whisker | |
| CN103950957A (en) | Process method for preparing magnesium hydroxide from magnesium sulfate | |
| CN109502937A (en) | A kind of method of curing sludge and utilize the sludge curing agent for mentioning titanium slag | |
| CN101734878A (en) | Chlorine-free liquid cement grinding aid and production method thereof | |
| CN109721299A (en) | A kind of method that electrolytic manganese residues prepare baking-free ceramicite | |
| CN101486481A (en) | Method for coproduction of ammonia sulfate and superfine light calcium carbonate from fluorgypsum | |
| CN107059134A (en) | A kind of method that crystal whisker of gypsum is prepared under normal pressure | |
| CN107602004A (en) | A kind of multi-element, inorganic composite granule soil solidification additive | |
| CN102219964B (en) | Layered composite hydroxide used as polyvinyl chloride heat stabilizer and preparation method thereof | |
| CN105329907B (en) | A kind of vermiculite prepares the method and the discarded object method for preparing polysilicon acid magnalium flocculant using the preparation process of precipitated silica | |
| CN107382111A (en) | A kind of method that normal pressure salt solustion mehtod produces α super strong gypsums |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190816 |
|
| RJ01 | Rejection of invention patent application after publication |