CN107285652A - For preparing the method that the ardealite of high strength gypsum is pre-processed - Google Patents
For preparing the method that the ardealite of high strength gypsum is pre-processed Download PDFInfo
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- CN107285652A CN107285652A CN201710657634.8A CN201710657634A CN107285652A CN 107285652 A CN107285652 A CN 107285652A CN 201710657634 A CN201710657634 A CN 201710657634A CN 107285652 A CN107285652 A CN 107285652A
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- ardealite
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- strength gypsum
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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
- C04B11/00—Calcium sulfate cements
- C04B11/005—Preparing or treating the raw materials
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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
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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Abstract
The present invention relates to a kind of method for the ardealite pretreatment for being used to prepare high strength gypsum, technical scheme being configured to slurry will to be added water in ardealite, adding progress first time ultrasonic vibration washing after builder is mixed evenly, obtaining a ultrasonic mixing liquid；After addition cleaning agent stirs into a ultrasonic mixing liquid, add after adsorbent stirs and carry out second of ultrasonic vibration washing, obtain twice ultrasonic mixed liquor；Twice ultrasonic mixed liquor is filtered by vacuum, filter cake ardealite after vacuum drying is pre-processed again.Present invention process is simple, production efficiency is high, production cost is low, good impurity removing effect, it is with short production cycle, suitable for industrial applications, the ardealite excellent performance of processing, it is adaptable to prepare high strength gypsum.
Description
Technical field
The present invention relates to a kind of phosphorous chemical industry field, the method for specifically planting ardealite pretreatment.
Background technology
High strength gypsum raw material is produced based on the natural gypsum and desulfurated plaster, ardealite prepares high strength gypsum for raw material and still existed
Experimental stage, its rarely seen industrialization report.
Ardealite is the accessory substance during sulfuric acid decomposition rock phosphate in powder preparing phosphoric acid, and building material industry is that the important of ardealite should
With field, ardealite can be widely applied in terms of binder materials, gypsum block, sheet material is prepared etc., especially prepare it is high
There is good application prospect in terms of strong gypsum, can effectively reduce cost.But it is many containing phosphorus, fluorine, organic matter etc. in ardealite
Objectionable impurities is to restrict ardealite as the wide variety of most important reason of construction material, and these objectionable impurities are produced to ardealite
The performance of product has large effect.At present, the traditional treatment method of ardealite mainly has WATER-WASHING METHOD, lime neutralisation treatment method, floated
Select facture and ball-milling method, Zhou Jie, Yang Chengjun et al. is " ardealite prepares the Primary Study of high strength gypsum powder pretreating process "
The different pretreatments process such as Primary Study washing, lime neutralization, flotation is to high strength gypsum powder sample strength and crystal in one text
The influence of pattern.As a result show:Lime neutralization pretreatment cost is low, simple to operate, non-secondary pollution, but sample strength can only
Reach 17.2MPa, it is impossible to meet the performance requirement of high strength gypsum.Your Xiao Hong " preparation of ardealite based cementitious material it is theoretical and
Also analyze emphatically and ardealite is turned by two aqueous phases to half aqueous phase in the text of application technical research " one from the preconditioning technique of raw material
Become and crystal habit regulation and control influence, mainly handle ardealite by way of washing and neutralizing, but the mode of WATER-WASHING METHOD
Water consumption is big, and the content of soluble sodium salt in slurry can be increased by neutralizing rule.The above method, which is deposited, to be deposited in ardealite after treatment
The problem of removing not good Deng impurity, and the slightly solubility phosphoric acid that phosphorus, fluorine impurity are formed during gypsum conversion reaction in ardealite
Calcium and calcirm-fluoride are deposited on the surface of dihydrate gypsum crystal, have a strong impact on the integrality of alpha semi-hydrated gypsum crystal development, cause height
The mechanical properties decrease of strong land plaster.When the αsemiwatergypsum of not preprocessed preparation does not reach the intensity of high strength gypsum far, condensed
Between, the performance requirement such as normal consistency, so can the pretreatment of early stage is ardealite prepare the standard compliant high strength gypsum of quality
Key point, this is also difficult point of the current ardealite as production high strength gypsum raw material.
Patent CN104628276A proposes a kind of ardealite processing method, and this method to ardealite first by carrying out base
To attachment water content to add modifying agent after 8%-10% combination reaction, drying calcining occur for this water-washing pre-treatment, then ageing.
The technique is using the modified ardealite of chemical combination, and the phosphorus plaster of Paris performance obtained after calcining is stable, reliable in quality, can consume
Substantial amounts of ardealite, mitigates the pollution to environment, but this method requires that drying temperature is 360-450 DEG C, drying to water content
For less than 2%, calcining heat is 200-240 DEG C, and the product that temperature requirement is higher and produces is primarily directed to build
Build gypsum, it is difficult to realize that a large amount of commercial introductions are used.
Patent CN102731001A provides a kind of Phosphogypsum composite pretreatment technique, and the invention is successively to chemical enterprise
The phosphogypsum slag being expelled directly out carries out sub-sieve, washing, neutralization, flotation and suction filtration operation, and the recirculated water of this processing mode comes from
The waste water that chemical fertilizer factory's phosphorus ore ball milling or phosphoric acid washing process are produced, wherein containing more titanium pigments and organic impurities so that
Ardealite Chen Xu in preprocessing process is cumbersome, and consumption alkali nertralizer increases, and the finished product after processing is impure to be increased, the finished product later stage
Setting time extension, short texture, intensity decreases, are not reaching to the purpose of pretreatment during use.
Describe and pre-processed with the method for ultrasonic wave in paper " phosphogypsum purification processing and its influence to cement performance "
Ardealite, the ardealite PH after this method is treated is 7.03, shows neutrality, content of organics is 0.0401mol/L, after treating
Ardealite be mainly used in make cement retarder.
The content of the invention
The invention aims to solve above-mentioned technical problem, there is provided a kind of technique is simple, production efficiency is high, be produced into
This low, good impurity removing effect, it is with short production cycle, suitable for industrial applications, the ardealite excellent performance of processing can be as preparing system
The method of the ardealite pretreatment of standby high strength gypsum raw material.
Preprocess method of the present invention comprises the following steps：
(1) added water in ardealite and be configured to slurry, added after builder is mixed evenly and carry out ultrasound shake for the first time
Washing is swung, a ultrasonic mixing liquid is obtained；
(2) after addition cleaning agent stirs into a ultrasonic mixing liquid, add after adsorbent stirs and carry out
Second of ultrasonic vibration washing, obtains twice ultrasonic mixed liquor；
(3) twice ultrasonic mixed liquor is filtered by vacuum, obtained filter cake again vacuum drying pretreatment after ardealite.
In the step (1), first time ultrasonic vibration wash time is 5-25min.
The builder is sodium citrate and/or potassium citrate, and addition is the 4%-8% of phosphogypsum quality.
In the step (2), second of ultrasonic vibration wash time is 5-35min.
In the step (2), the cleaning agent is quick lime and/or white lime, and addition is phosphogypsum quality
0.1%-0.5%.
In the step (2), when the cleaning agent is quick lime and white lime, the quality of the quick lime and white lime
Than less than or equal to 0.5.
In the step (2), the adsorbent is haydite and/or zeolite, and the addition of the haydite is phosphogypsum quality
10%-20%, the addition of the zeolite is the 10%-20% of phosphogypsum quality.
In the step (2), the particle diameter of the haydite is 5-10mm, and bulk density is in 500-800kg/m3；The zeolite
For at least one of clinoptilolite, chabasie, modenite and analcime, particle diameter is 5-10mm.
In the step (3), the temperature of vacuum drying is 50-80 DEG C, and the time is 24-48h.
In the step (3), ardealite PH is 4-5, content of organics after being pre-processed<0.03mol/L.
For there is problem in background technology, inventor has carried out following improvement：(1) using ultrasonic vibration twice:Invention
People's research is found, under the conditions of the sufficient ultrasonic vibration of water, when ultrasonic wave is produced in a liquid, can be formed compression and be expanded
Region, causes the formation and rupture of cavitation bubble, when cavitation follicular rupture, and height will be produced in very short time and little space
Temperature, high pressure, and with strong shock wave and jet, violent shock is carried out to the ardealite in liquid so that ardealite table
The titanium pigment and organic impurities in face are more readily pulled from, with good impurity-eliminating effect.The sufficient microwave time makes in ardealite
Organic and inorganic class impurity release, but then, inventor find the microwave time be not to be directly proportional to impurity-eliminating effect,
The long temperature that can make whole slurry of ultrasonic time is raised, and too high temperature can make the activity rise of partial impurities in slurry, table
The surface-active of ardealite crystal after the impurity release of face can adsorb the impurity in slurry again at a higher temperature, so as to drop
The effect of low ultrasonic pretreatment release impurity.In order to solve the above technical problems, inventor is by the way of the concussion of gradation microwave,
The concussion of first time microwave makes the builder of addition be substantially soluble in slurry, reacts, is reached just with phosphorus soluble in slurry and fluorine
The effect neutralized is walked, second of microwave concussion not only makes quick lime and/or white lime be dissolved in rapidly in slurry solution, reached secondary
The purpose of neutralization, and microwave concussion can make the organic impurities fast-falling of ardealite surface attachment, so as to make adsorbent more preferable
Absorbent solution in organic impurities, reach more preferable impurity-eliminating effect.By microwave process twice, once microwave is removed in short-term for solution
It is miscellaneous insufficient, the problem of removal of impurities slurry temperature is too high when long.It is preferred that control first time ultrasonic vibration wash time to be 5-25min,
Second of ultrasonic vibration wash time is 5-35min, and total time control twice is in 10-60min；Add and help before (2) microwaves
Lotion：Research finds that exclusive use ripple is micro- because the frequency of ultrasonic wave used in laboratory is not high and ultrasonic time should not cross original of waiting so long
Cause, independent ultrasonic vibration can only limited removal ardealite surface attachment impurity so that ardealite shows neutrality after processing, unfavorable
In as high strength gypsum raw material, and impurity-eliminating effect need further raising.Therefore applicant regard microwave treatment as nondominant hand
Section, first adds builder to carry out first time ultrasonic vibration washing, is reacted with the titanium pigment in ardealite slurry and fluorine, reduces slurry
PH, be subsequently used for playing a part of crystal polymorph control agent when constant pressure hydro-thermal method prepares high strength gypsum, the height for preparing the later stage
Strong gypsum crystal formation is good.The builder optimization citric acid sodium and/or potassium citrate, it has, and 1. safety non-toxic 2. can be biological
5. 3. degraded has a metal complexing capability 4. solubility property is fabulous has good PH regulations and shock-absorbing capacity 6. clean result
The multiple advantage such as become better and better with temperature rise, good cleaning action can be played when being used as builder will not introduce new miscellaneous again
Matter, and production is simple, it is economical and easily available.And sodium citrate and potassium citrate are the good crystal polymorph controls for preparing high strength gypsum
Agent.The addition of the builder is the 4%-8% of phosphogypsum quality, too high that solution environmental can be made to be alkalescence, should not prepare height
Strong gypsum, it is too low, do not reach and neutralize effect (3) the addition cleaning agent for adding crystal polymorph control and carried out again after adsorbent super for the second time
Acoustic shock is swung：Cleaning agent selects quick lime and/or white lime, can reach the purpose that lime is neutralized, and allows Leaching Properties of Soluble Phosphorus, the fluorine of harmful state
Inert difficulty soluble salt is converted into, so as to eliminate the adverse effect of Leaching Properties of Soluble Phosphorus, fluorine to ardealite agglutination material, coagulates ardealite agglutination material
Knot hardening tends to be normal, and the cleaning agent is quick lime and/or white lime, and addition is the 0.1%-0.5% of phosphogypsum quality,
It is too high that solution environmental can be made to be alkalescence, high strength gypsum should not be prepared, it is too low, it can not fully neutralize the solubility in ardealite
Phosphorus and fluorine；Quick lime and/or white lime and the sour and solubility in ardealite can be caused by carrying out ultrasonic vibration on this basis
Phosphorus fully react, realize making full use of for quick lime and/or white lime, compared to existing neutralisation, the pre- place of the present invention
Reason method can greatly reduce the consumption of quick lime and/or white lime, also greatly reduce ardealite in water-washing process
Water consumption, has both saved water resource, reduces secondary pollution.The adsorbent selection haydite and/or zeolite, its is distinctive porous
Structure, can not only effectively adsorb the organic impurities in ardealite, and the absorption of zeolite heavy metal in the basic conditions
Effect is fine, in addition, within the scope of the main component of haydite and zeolite belongs to ardealite main component, will not be to phosphorus stone
New impurity is reintroduced back in cream.It is aided with ultrasonic vibration on this basis, can fully adsorbs the organic impurities in ardealite.This
Outer inventor is had found to add after zeolite, and ultrasonic time is significantly reduced, and pretreated phosphorus semi-hydrated gypsum is in setting time, intensity
There is good improvement Deng aspect of performance.
Beneficial effect：
Present invention process is simple, with short production cycle, it is easy to operate, production cost is low, it is energy-saving, addition can be greatly decreased
The consumption of agent and water, good impurity removing effect.The organic matter in ardealite, Leaching Properties of Soluble Phosphorus and soluble fluorine after handled by the present invention etc. are miscellaneous
Matter is greatly decreased, obtained ardealite PH<6th, the content of organic matter<0.03mol/L, whiteness are high-strength to make up to more than 83
Gypsum provides necessary sour environment, and the high strength gypsum rupture strength prepared is up to more than 56.2mpa, and final setting time is obvious
Extension, can reach 30min, finished product ardealite acts not only as steam pressure or constant pressure hydro-thermal reaction prepares high strength gypsum, more
It can be used for calcining and prepare β plaster of Paris, excellent whiteness index preferably can be used in decorating and renovating material, expand product
Have a wide range of application, greatly promote the popularization and application of ardealite.
Embodiment
The present invention is described in further detail below by embodiment, ardealite used is Phosphate Fertilizer Industry in embodiment
Solid waste, from Sichuan Yin Shan chemical companies, each main constituents in the ardealite are：32.8%CaO,
2.76%SiO2, 0.69%Al2O3, 1.02%Fe2O3, 0.19%MgO, 46.4%SO3, 1.33%P2O5, 0.10% organic matter.
Quick lime and white lime are commercially available prod.Frequency during ultrasonic oscillation is 80 hertz.
Embodiment 1：
Step 1：300g ardealites and 300g water is taken to be put into container and make slurry；
Step 2：10g sodium citrate and 9g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 10min；
Step 4：Add into the container of step 3 1.5g slaked lime under agitation it is uniform after add 30g haydite and 30g
Zeolite, is finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is 25min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 65 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 87, PH is that the 4.53, content of organic matter is 0.020mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.7MPa, compression strength is 60.7MPa, and final setting time is 22min.Meet described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 2：
Step 1：300g ardealites and 350g water is taken to be put into container and make slurry；
Step 2：18g sodium citrate and 6g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 10min；
Step 4：White lime, the 0.5g quick lime that 1.0g is added in container into step 3 are added after stirring
50g haydite and 35g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
25min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 4 is placed in drying 24-48h in 55 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 88, PH is that the 4.62, content of organic matter is 0.012mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.5MPa, compression strength is 59.8MPa, and final setting time is that 24min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 3：
Step 1：300g ardealites and 350g water is taken to be put into container and make slurry；
Step 2：15g sodium citrate and 7g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 5min；
Step 4：White lime, the 0.2g quick lime that 1.0g is added in container into step 3 are added after stirring
45g haydite and 50g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
30min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 55 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 88, PH is that the 4.89, content of organic matter is 0.010mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.3MPa, compression strength is 58.9MPa, and final setting time is that 26min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 4：
Step 1：300g ardealites and 380g water is taken to be put into container and make slurry；
Step 2：12g sodium citrate and 8g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 5min；
Step 4：White lime, the 0.3g quick lime that 1.2g is added in container into step 3 are added after stirring
45g haydite and 50g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
10min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 60 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 89, PH is that the 5.00, content of organic matter is 0.023mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.3MPa, compression strength is 57.6MPa, and final setting time is that 25min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 5：
Step 1：300g ardealites and 400g water is taken to be put into container and make slurry；
Step 2：4g sodium citrate and 20g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 25min；
Step 4：White lime, the 0.2g quick lime that 0.8g is added in container into step 1 are added after stirring
60g haydite and 50g zeolite, finally it is placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, duration
For 35min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 60 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 87, PH is that the 4.32, content of organic matter is 0.018mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
7.3MPa, compression strength is 64.7MPa, and final setting time is that 27min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 6：
Step 1：300g ardealites and 400g water is taken to be put into container and make slurry；
Step 2：24g sodium citrate is added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 15min；
Step 4：55g haydite and 60g is added after addition 0.8g slaked lime under agitation is uniform in container into step 3
Zeolite, be finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, the duration is 32min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 65 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 90, PH is that the 4.00, content of organic matter is 0.009mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
7.5MPa, compression strength is 65.5MPa, and final setting time is that 30min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 7：
Step 1：300g ardealites and 450g water is taken to be put into container and make slurry；
Step 2：8g sodium citrate and 10g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 20min；
Step 4：White lime, the 0.1g quick lime that 0.6g is added in container into step 1 are added after stirring
40g haydite and 55g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
18min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 70 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 83, PH is that the 4.85, content of organic matter is 0.015mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.5MPa, compression strength is 56.2MPa, and final setting time is that 24min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 8：
Step 1：300g ardealites and 500g water is taken to be put into container and make slurry；
Step 2：6g sodium citrate and 15g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 10min；
Step 4：White lime, the 0.2g quick lime that 0.5g is added in container into step 1 are added after stirring
35g haydite and 40g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
28min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 70 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 87, PH is that the 4.56, content of organic matter is 0.013mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
7.1MPa, compression strength is 61.1MPa, and final setting time is that 25min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 9：
Step 1：300g ardealites and 550g water is taken to be put into container and make slurry；
Step 2：5g sodium citrate and 18g potassium citrate are added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 5min；
Step 4：White lime, the 0.1g quick lime that 0.4g is added in container into step 1 are added after stirring
40g haydite and 35g zeolite, are finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, and the duration is
25min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 75 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 85, PH is that the 4.93, content of organic matter is 0.025mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.7MPa, compression strength is 57.9MPa, and final setting time is that 27min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Embodiment 10：
Step 1：300g ardealites and 600g water is taken to be put into container and make slurry；
Step 2：24g potassium citrate is added into container, is mixed evenly；
Step 3：The container equipped with mixture slurry in step 2 is placed in the sufficient ultrasonic cleaner of water, ultrasound
Concussion washing, the duration is 15min；
Step 4：30g haydite and 30g is added after addition 0.3g slaked lime under agitation is uniform in container into step 1
Zeolite, be finally placed in the sufficient ultrasonic cleaner of water, ultrasonic vibration washing, the duration is 40min；
Step 5：Mixture slurry after ultrasound in step 4 is filtered by vacuum, take filter cake cleaned after ardealite；
Step 6：Ardealite in step 5 is placed in drying 24-48h in 80 DEG C of vacuum drying oven and obtains finished product ardealite.
Step 7：Ardealite after being handled in step 6 is prepared into high strength gypsum by way of constant pressure hydro-thermal.
Ardealite whiteness after the present embodiment processing is that 86, PH is that the 4.78, content of organic matter is 0.021mol/L, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares high strength gypsum, and the rupture strength that can obtain high strength gypsum is
6.9MPa, compression strength is 59.3MPa, and final setting time is that 23min. meets described in building material industry standard JC/T2038-2010
α -50 standard.
Comparative example 1：
Except shaking outer without microwave twice, builder addition is 20g sodium citrate and 15g potassium citrate, clearly
Lotion addition is 2.5g white lime, and adsorbent addition is 30g haydite and 30g zeolite, remaining be the same as Example 1.
Ardealite whiteness after the present embodiment processing is that 88, PH is that the 4.72, content of organic matter is 0.035mol/L, consumes water
Consumption be 875g, using pretreated ardealite finished product carry out constant pressure hydro-thermal reaction prepare gypsum, high strength gypsum can be obtained
Rupture strength is 6.1MPa, and compression strength is 56.0MPa, and final setting time is 20min.
Comparative example 2
Second of microwave concussion is only carried out, the time is 60min, remaining be the same as Example 1.
Ardealite whiteness after the present embodiment processing is that the 4.68, content of organic matter is 0.033mol/L for 78, PH, using pre-
Ardealite finished product after processing carries out constant pressure hydro-thermal reaction and prepares gypsum, and the rupture strength that can obtain high strength gypsum is 6.1MPa, is resisted
Compressive Strength is 55.5MPa, and final setting time is 20min.
Clearly draw to draw a conclusion by comparative example：1. directly add builder without ultrasonic vibration with comparative example 1, it is clear
The high strength gypsum that lotion, adsorbent and water are prepared after being pre-processed to ardealite, reaches the performance roughly the same with the application
Index needs to consume about 2 times of builder and 1.5 times of cleaning agent, considerably increases the consumption of builder and cleaning agent, together
Hourly water consumption is also greatly increased.2. a ultrasonic vibration is only carried out with comparative example 2 to compare, shake time lengthening, and prepare
High strength gypsum indices be below the index of the present patent application.In summary, pretreatment described in the present patent application
Method can effectively save resource, and the high strength gypsum prepared is suitable for being widely applied and applies.
Claims (10)
1. a kind of method for the ardealite pretreatment for being used to prepare high strength gypsum, it is characterised in that comprise the following steps：
(1) added water in ardealite and be configured to slurry, added progress first time ultrasonic vibration after builder is mixed evenly and wash
Wash, obtain a ultrasonic mixing liquid；
(2) after addition cleaning agent stirs into a ultrasonic mixing liquid, add and second is carried out after adsorbent stirs
Secondary ultrasonic vibration washing, obtains twice ultrasonic mixed liquor；
(3) twice ultrasonic mixed liquor is filtered by vacuum, obtained filter cake again vacuum drying pretreatment after ardealite.
2. the method for the ardealite pretreatment as claimed in claim 1 for being used to prepare high strength gypsum, it is characterised in that the step
Suddenly in (1), first time ultrasonic vibration wash time is 5-25min.
3. the method for the ardealite pretreatment as claimed in claim 1 for being used to prepare high strength gypsum, it is characterised in that described to help
Lotion is sodium citrate and/or potassium citrate, and addition is the 4%-8% of phosphogypsum quality.
4. the method that being used for as described in claim 1-3 is any prepares the ardealite pretreatment of high strength gypsum, it is characterised in that
In the step (2), second of ultrasonic vibration wash time is 5-35min.
5. the method that being used for as described in claim 1-3 is any prepares the ardealite pretreatment of high strength gypsum, it is characterised in that
In the step (2), the cleaning agent is quick lime and/or white lime, and addition is the 0.1%-0.5% of phosphogypsum quality.
6. the method for the ardealite pretreatment as claimed in claim 5 for being used to prepare high strength gypsum, it is characterised in that the step
(2) in, when the cleaning agent is quick lime and white lime, the mass ratio of the quick lime and white lime is less than or equal to 0.5.
7. the method that being used for as described in claim 1-3 is any prepares the ardealite pretreatment of high strength gypsum, it is characterised in that
In the step (2), the adsorbent is haydite and/or zeolite, and the addition of the haydite is phosphogypsum quality 10%-
20%, the addition of the zeolite is the 10%-20% of phosphogypsum quality.
8. as claim 7 is used to prepare the method that the ardealite of high strength gypsum is pre-processed, it is characterised in that the step (2)
In, the particle diameter of the haydite is 5-10mm, and bulk density is in 500-800kg/m3；The zeolite is clinoptilolite, chabasie, silk
At least one of geolyte and analcime, particle diameter are 5-10mm.
9. the method that being used for as described in claim any one of 1-3 prepares the ardealite pretreatment of high strength gypsum, its feature exists
In in the step (3), the temperature of vacuum drying is 50-80 DEG C, and the time is 24-48h.
10. the method that being used for as described in claim any one of 1-3 prepares the ardealite pretreatment of high strength gypsum, its feature exists
In in the step (3), ardealite PH is 4-5, content of organics after being pre-processed<0.03mol/L, whiteness is more than 83.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108558250A (en) * | 2018-02-05 | 2018-09-21 | 三峡大学 | A kind of technique that low temperature calcination ardealite prepares β-semi-hydrated gypsum |
| CN109734341A (en) * | 2019-03-13 | 2019-05-10 | 西南科技大学 | A kind of method that ardealite physical chemistry brightened and prepared cementitious material |
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| CN116425187A (en) * | 2023-04-20 | 2023-07-14 | 湖南科技大学 | Method for improving whiteness of phosphogypsum |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA200102866B (en) * | 2001-04-06 | 2003-09-11 | Dirk Guustaaf Mantel | Treatment of phospho gypsum. |
| CN102603219A (en) * | 2012-03-16 | 2012-07-25 | 武汉理工大学 | Process for preparing high-activity semi-hydrated gypsum cementing material and gypsum product by aid of phosphorous gypsum |
| CN106977123A (en) * | 2017-03-31 | 2017-07-25 | 合肥学院 | A kind of citric acid for being used to remove impurity fluorine in ardealite adds water the process washed |
-
2017
- 2017-08-03 CN CN201710657634.8A patent/CN107285652B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA200102866B (en) * | 2001-04-06 | 2003-09-11 | Dirk Guustaaf Mantel | Treatment of phospho gypsum. |
| CN102603219A (en) * | 2012-03-16 | 2012-07-25 | 武汉理工大学 | Process for preparing high-activity semi-hydrated gypsum cementing material and gypsum product by aid of phosphorous gypsum |
| CN106977123A (en) * | 2017-03-31 | 2017-07-25 | 合肥学院 | A kind of citric acid for being used to remove impurity fluorine in ardealite adds water the process washed |
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| CN108558250A (en) * | 2018-02-05 | 2018-09-21 | 三峡大学 | A kind of technique that low temperature calcination ardealite prepares β-semi-hydrated gypsum |
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| CN111606349A (en) * | 2019-07-03 | 2020-09-01 | 中建材创新科技研究院有限公司 | Impurity removal method for gypsum with high impurity ion content |
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| CN111777347B (en) * | 2020-07-13 | 2021-12-17 | 扬州工业职业技术学院 | Industrial solid waste desulfurization gypsum pretreatment method |
| CN116425187A (en) * | 2023-04-20 | 2023-07-14 | 湖南科技大学 | Method for improving whiteness of phosphogypsum |
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