CN106430272B - A kind of preparation method of bar-shaped aragonite calcium carbonate - Google Patents
A kind of preparation method of bar-shaped aragonite calcium carbonate Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
Abstract
It is, by limestone crushing, to calcine the invention discloses a kind of preparation method of bar-shaped aragonite calcium carbonate, then with 1:3 ~ 8 buck mass ratio is digested, and obtains lime white；Sieving, filter cleaner, the solid content for the regulation lime white that adds water is to obtain refined lime slurry；The temperature for controlling refined lime to starch is 30 ~ 60 DEG C, it is incorporated as 0.5 ~ 2.0% compound chemical additives of calcium hydroxide quality in lime white, carbonators is delivered to again, open stirring, be passed through kiln gas carry out carbonation reaction to pH be 8.0 when, stop ventilation, terminate carbonation reaction, obtain winnofil suspension；Finally conventionally produce bar-shaped aragonite calcium carbonate after dehydration, drying.Calcium carbonate stable crystal form, the pattern of product are in bar-shaped made from this method, and specific surface area is big, and aragonite phase content is up to more than 85%；Have the advantages that the low, production efficiency of power consumption is high, cost is low, technique is simple, easily realizes industrialized production simultaneously.
Description
Technical field
The invention belongs to technical field of inorganic material, specifically a kind of preparation method of bar-shaped aragonite calcium carbonate.
Background technology
Aragonitic winnofil is a kind of metastable-state crystal material, with intensity height, high temperature resistant and modulus of elasticity height etc.
Feature.Bar-shaped aragonitic winnofil, because it has a shape characteristic of certain draw ratio and it is wide concerned.In plastics, rubber
Manufacture field, bar-shaped aragonitic winnofil can adapt to the process of complexity as strengthening and toughening filler, and improvement is filled out
System processing characteristics is filled, enhancing, toughened matrix material improve loading.Bar-shaped aragonitic winnofil as papermaking filler,
Paper strength and opacity can be improved.Bar-shaped aragonitic winnofil is as Paper Coating material, and it has preferably aobvious
Color effect and pigment retention.Therefore, bar-shaped aragonitic winnofil, which has, is substantially distinguished from common spindle precipitation carbonic acid
The excellent specific property of calcium, has a extensive future.
At present, it is using metathesis reaction method, ureal antigen, calcium bicarbonate heat mostly to prepare bar-shaped aragonite calcium carbonate
Solution and carbonation method, wherein first three preparation method cause to be difficult to industrialize due to defects such as big, the production cost height of power consumption, and
The features such as carbonation method has simple to operate and abundant raw material, it is easy to industrialized production.Aragonite phase carbon is prepared using carbonation method
Sour calcium, generally requires and appropriate chemical additives, aragonite phase crystal seed is added in lime white or in rod/column crystal seed, induction text
Stone is mutually produced, and controls the crystal habit of aragonite phase.Bar-shaped aragonite calcium carbonate is prepared using the method for addition crystal seed, to crystal seed
Crystal habit or aragonite content require high, so that the difficulty of crystal seed preparation is caused, in contrast to this using the side of chemical additives
Method is relatively easy.
Chinese patent CN 104790024A disclose a kind of preparation method for high length-diameter ratio Aragonite Style Calcium Carbonate Whiskers of knowing clearly,
With MgCl2For chemical additives, magnesium/calcium ratio in lime white, synthesis draw ratio 10-26 aragonite phase calcium carbonate crystal whisker are controlled.
But the solid content of calcium hydroxide is too low in lime white in this method, and production efficiency is not high, MgCl2Consumption is big and reclaims difficult, production
Product aftertreatment technology is complicated.
In summary, there is low production efficiency in the preparation of bar-shaped aragonite calcium carbonate at present, power consumption is big, cost is high, processing
The shortcomings of difficulty, product crystal formation and pattern are difficult to control to is reclaimed in agent.
The content of the invention
Present invention aims at provide a kind of preparation method of bar-shaped aragonite calcium carbonate.This method is using lime stone as original
Material, using the method for carbonating, using chemical additives induced synthesis aragonite calcium carbonate and regulates and controls its pattern.This method is not only
The crystal formation and pattern of calcium carbonate can be controlled, also has the advantages that the low, production efficiency of power consumption is high, cost is low, technique is simple.
In order to realize the above object the technical solution adopted by the present invention is as follows：
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 2 ~ 7h is calcined in the case where temperature is 900 ~ 1400 DEG C, then obtained lime stone will be fired with 1:
3 ~ 8 buck mass ratio is digested, and obtains lime white；
（2）By step（1）Obtained lime white crosses 80 ~ 100 mesh sieves, filter cleaner, the solid content for the regulation lime white that adds water
For 7 ~ 20%, refined lime slurry is obtained, it is standby；
（3）Control refined lime starch temperature be 30 ~ 60 DEG C, be incorporated as calcium hydroxide quality in lime white 0.5 ~
2.0% compound chemical additives, then be delivered to carbonators, open stirring, be passed through kiln gas carry out carbonation reaction to pH be 8.0
When, stop ventilation, terminate carbonation reaction, obtain winnofil suspension；The compound chemical additives are by three components
Composition, the first component is polybasic carboxylic acid and/or polybasic carboxylic acid soluble-salt, and the second component is the chlorine containing calcium, barium and zinc ion
One or more combinations in salt dissolving, nitrate and sulfate；Third component is polyethylene glycol, lauryl sodium sulfate, 12
One or more combinations in sodium alkyl benzene sulfonate, OP-10；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
It is preferred that, the temperature of calcining described above is 950 ~ 1150 DEG C.
It is preferred that, water temperature is 25 ~ 30 DEG C in above digestion process.
It is preferred that, the solid content of lime white described above is 12 ~ 15%.
It is preferred that, the content of carbon dioxide is 10 ~ 60% in kiln gas described above.
It is preferred that, the flow described above for being passed through kiln gas is 4 ~ 10m3/h。
It is preferred that, above step（3）The speed of the stirring is 200 ~ 700r/min.
It is preferred that, the first component in compound chemical additives described above：Second component：The mass ratio of third component is 1:
1.5~2:0.2~0.5。
It is preferred that, the first component described above is glutaric acid, oxalic acid, butanedioic acid, malonic acid, tartaric acid, malic acid, lemon
One or more compositions in sour sodium.
It is preferred that, the second component described above is in barium sulfate, zinc chloride, calcium nitrate, calcium sulfate, zinc sulfate, calcium chloride
One or more compositions.
Compared with prior art, advantages of the present invention and have the beneficial effect that：
1st, the present invention is lured using abundant ore resource lime stone as raw material by carbonation reaction and using chemical additives
Lead to form aragonite calcium carbonate and regulate and control its pattern and prepare the bar-shaped calcium carbonate of aragonitic.Calcium carbonate crystal formation is steady made from this method
The pattern of fixed, product is in bar-shaped, and specific surface area is big, and aragonite phase content is up to more than 85%；Have simultaneously intensity high, high temperature resistant and
The features such as modulus of elasticity is high, is excellent strengthening and toughening filler.
2nd, the compound chemical additives used in the present invention, can not only improve the content and Effective Regulation precipitation carbonic acid of aragonite phase
Calcium pattern, moreover it is possible to improve the mechanical property of calcium carbonate and strengthen it as filler and the compatibility of other components.
3rd, this method also has the advantages that the low, production efficiency of power consumption is high, cost is low, technique is simple, easily realizes industrialization
Production.
Brief description of the drawings
Fig. 1 (a) is the X ray diffracting spectrum of the product of embodiment 1；
Fig. 1 (b) is the X ray diffracting spectrum of the product of embodiment 2；
Fig. 1 (c) is the X ray diffracting spectrum of the product of embodiment 3；
Fig. 1 (d) is the X ray diffracting spectrum of the product of embodiment 4；
Fig. 1 (e) is the X ray diffracting spectrum of the product of embodiment 5；
Fig. 2 is the ESEM of the product of embodiment 1（SEM）Photo；
Fig. 3 is the surface sweeping Electronic Speculum of the product of embodiment 2（SEM）Photo；
Fig. 4 is the ESEM of the product of embodiment 3（SEM）Photo；
Fig. 5 is the ESEM of the product of embodiment 4（SEM）Photo；
Fig. 6 is the ESEM of the product of embodiment 5（SEM）Photo.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but is not limited to protection scope of the present invention.
Calcium carbonate product made from following examples carries out X-ray diffraction（XRD) characterize, aragonite phase content is calculated by formula 1.
... ... ... ... ... ... ... formula 1
In formula, y is the content of aragonite phase calcium carbonate in product, and Ia is the most strong diffractive features of aragonite phase in product X RD collection of illustrative plates
The integrated intensity at peak, Ic is the integrated intensity at the most strong diffractive features peak of calcite phase in product X RD collection of illustrative plates.
Embodiment 1
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 6h is calcined in the case where temperature is 900 DEG C, then obtained lime stone will be fired with 1:4 buck
Mass ratio is digested, and it is 28 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
10%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 55 ~ 60 DEG C, and it is 0.3% penta 2 to be incorporated as calcium hydroxide quality in lime white
Acid, 0.5% barium sulfate and 0.1% polyethylene glycol are as chemical additives, then are delivered in carbonators, and regulation stir speed (S.S.) is
400r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 20% carry out carbonation reaction to pH be 8.0 when, control the flow of kiln gas
For 4m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The product that the present embodiment is obtained is by XRD spectrum detection, testing result such as Fig. 1（A), calculated further according to formula 1, gained
Product aragonite phase content is 87.49%.The detection of Electronic Speculum instrument is scanned through, scanning electron microscope (SEM) photograph is as shown in figure 1, as can be seen from the figure
The pattern of product is in bar-shaped, and particle diameter distribution is uniform.
Embodiment 2
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 3h is calcined in the case where temperature is 1250 DEG C, then obtained lime stone will be fired with 1:6.5
Buck mass ratio is digested, and it is 28 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 100 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
12%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 30 ~ 35 DEG C, and it is 0.4% grass to be incorporated as calcium hydroxide quality in lime white
Acid, 0.6% zinc chloride and 0.2% lauryl sodium sulfate are as chemical additives, then are delivered in carbonators, adjust stir speed (S.S.)
For 350r/min, be passed through the kiln gas that the concentration of carbon of dioxy two is 25% carry out carbonation reaction to pH be 8.0 when, control the stream of kiln gas
Measure as 7m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The product that the present embodiment is obtained is by XRD spectrum detection, testing result such as Fig. 1（B), calculated further according to formula 1, gained
Product aragonite phase content is 87.95%.The detection of Electronic Speculum instrument is scanned through, scanning electron microscope (SEM) photograph is as shown in Fig. 2 as can be seen from the figure
The pattern of product is in bar-shaped, and particle diameter distribution is uniform.
Embodiment 3
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 4h is calcined in the case where temperature is 1200 DEG C, then obtained lime stone will be fired with 1:3 ash
Water quality is than being digested, and it is 30 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is 7%,
Refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 30 ~ 35 DEG C, and it is 0.5% amber to be incorporated as calcium hydroxide quality in lime white
Acid, 0.8% calcium nitrate and 0.1% lauryl sodium sulfate are as chemical additives, then are delivered in carbonators, adjust stir speed (S.S.)
For 300r/min, be passed through the kiln gas that the concentration of carbon of dioxy two is 15% carry out carbonation reaction to pH be 8.0 when, control the stream of kiln gas
Measure as 5m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The product that the present embodiment is obtained is by XRD spectrum detection, testing result such as Fig. 1（C), calculated further according to formula 1, gained
Product aragonite phase content is 89.63%.The detection of Electronic Speculum instrument is scanned through, scanning electron microscope (SEM) photograph is as shown in figure 3, as can be seen from the figure
The pattern of product is in bar-shaped, and particle diameter distribution is uniform.
Embodiment 4
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 7h is calcined in the case where temperature is 900 DEG C, then obtained lime stone will be fired with 1:5 buck
Mass ratio is digested, and it is 25 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 100 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
15%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 50 ~ 55 DEG C, and it is 0.2% the third two to be incorporated as in lime white calcium hydroxide quality
Acid, 0.3% butanedioic acid, 1.0% calcium sulfate and 0.1% polyethylene glycol are as chemical additives, then are delivered in carbonators, regulation
Stir speed (S.S.) is 500r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 34% carry out carbonation reaction to pH be 8.0 when, control
The flow of kiln gas is 5m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The product that the present embodiment is obtained is by XRD spectrum detection, testing result such as Fig. 1（D), calculated further according to formula 1, gained
Product aragonite phase content is 86.68%.The detection of Electronic Speculum instrument is scanned through, scanning electron microscope (SEM) photograph is as shown in figure 4, as can be seen from the figure
The pattern of product is in bar-shaped, and particle diameter distribution is uniform.
Embodiment 5
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 4h is calcined in the case where temperature is 1200 DEG C, then obtained lime stone will be fired with 1:7 ash
Water quality is than being digested, and it is 28 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
20%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.25% wine to be incorporated as calcium hydroxide quality in lime white
Stone acid, 0.3% zinc sulfate, 1% zinc chloride and 0.2%OP-10 are as chemical additives, then are delivered in carbonators, regulation stirring speed
Rate is 200r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 12% carry out carbonation reaction to pH be 8.0 when, control kiln gas
Flow is 6m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The product that the present embodiment is obtained is by XRD spectrum detection, testing result such as Fig. 1（E), calculated further according to formula 1, gained
Product aragonite phase content is 88.35%.The detection of Electronic Speculum instrument is scanned through, scanning electron microscope (SEM) photograph is as shown in figure 5, as can be seen from the figure
The pattern of product is in bar-shaped, and particle diameter distribution is uniform.
Embodiment 6
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 5h is calcined in the case where temperature is 1000 DEG C, then obtained lime stone will be fired with 1:6 ash
Water quality is than being digested, and it is 25 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 100 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
12%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.5% apple to be incorporated as calcium hydroxide quality in lime white
Acid, 1% zinc sulfate and 0.25% neopelex are as chemical additives, then are delivered in carbonators, regulation stirring speed
Rate is 600r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 10% carry out carbonation reaction to pH be 8.0 when, control kiln gas
Flow is 4m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The present embodiment products obtained therefrom aragonite phase content is 88.95%.
Embodiment 7
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 6h is calcined in the case where temperature is 950 DEG C, then obtained lime stone will be fired with 1:5 buck
Mass ratio is digested, and it is 25 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
15%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.6% lemon to be incorporated as calcium hydroxide quality in lime white
Sour sodium, 1.2% calcium nitrate and 0.2% neopelex are as chemical additives, then are delivered in carbonators, regulation stirring
Speed is 300r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 10% carry out carbonation reaction to pH be 8.0 when, control kiln gas
Flow be 6m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The present embodiment products obtained therefrom aragonite phase content is 86.25%.
Embodiment 8
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 3h is calcined in the case where temperature is 1300 DEG C, then obtained lime stone will be fired with 1:6 ash
Water quality is than being digested, and it is 30 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
10%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.6% penta 2 to be incorporated as calcium hydroxide quality in lime white
Acid, 1.0% calcium chloride and 0.1% and polyethylene glycol and 0.2% lauryl sodium sulfate are as chemical additives, then are delivered to carbonization
In tower, regulation stir speed (S.S.) is 700r/min, is passed through kiln gas that the concentration of carbon of dioxy two is 35% and carries out carbonation reaction to pH and is
When 8.0, the flow for controlling kiln gas is 5m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The present embodiment products obtained therefrom aragonite phase content is 85.17%.
Embodiment 9
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 4.5h is calcined in the case where temperature is 1000 DEG C, then obtained lime stone will be fired with 1:8
Buck mass ratio is digested, and it is 25 DEG C to control water temperature, obtains lime white；
（2）By step（1）Obtained lime white crosses 100 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
18%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.2% amber to be incorporated as calcium hydroxide quality in lime white
Acid, 0.3% barium sulfate and 0.1%OP-10 are as chemical additives, then are delivered in carbonators, and regulation stir speed (S.S.) is 250r/
Min, be passed through kiln gas that the concentration of carbon of dioxy two is 30% carry out carbonation reaction to pH be 8.0 when, control the flow of kiln gas for 5m3/
H, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The present embodiment products obtained therefrom aragonite phase content is 85.03%.
Embodiment 10
A kind of preparation method of bar-shaped aragonite calcium carbonate, comprises the following steps：
(1) by limestone crushing, 2.0h is calcined in the case where temperature is 1400 DEG C, then obtained lime stone will be fired with 1:7.5
Buck mass ratio digested, control water temperature be 30 DEG C, obtain lime white；
（2）By step（1）Obtained lime white crosses 80 mesh sieves, filter cleaner, and the solid content for the regulation lime white that adds water is
20%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 35 ~ 40 DEG C, and it is 0.2% grass to be incorporated as calcium hydroxide quality in lime white
Acid, 0.3% barium sulfate and 0.06% polyethylene glycol are as chemical additives, then are delivered in carbonators, and regulation stir speed (S.S.) is
300r/min, be passed through kiln gas that the concentration of carbon of dioxy two is 15% carry out carbonation reaction to pH be 8.0 when, control the flow of kiln gas
For 4m3/ h, stops ventilation, terminates carbonation reaction, obtains winnofil suspension；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, is produced bar-shaped
Aragonite calcium carbonate.
The present embodiment products obtained therefrom aragonite phase content is 90.16%.
Claims (9)
1. a kind of preparation method of bar-shaped aragonite calcium carbonate, it is characterised in that：Comprise the following steps：
(1) by limestone crushing, 2 ~ 7h is calcined in the case where temperature is 900 ~ 1400 DEG C, then obtained lime stone will be fired with 1:3~8
Buck mass ratio digested, obtain lime white；
（2）By step（1）Obtained lime white crosses 80 ~ 100 mesh sieves, filter cleaner, the solid content of the regulation lime white that adds water for 7 ~
20%, refined lime slurry is obtained, it is standby；
（3）The temperature for controlling refined lime to starch is 30 ~ 60 DEG C, is incorporated as 0.5 ~ 2.0% of calcium hydroxide quality in lime white
Compound chemical additives, then be delivered to carbonators, open stirring, be passed through kiln gas carry out carbonation reaction to pH be 8.0 when, stop
Ventilation, terminates carbonation reaction, obtains winnofil suspension；The compound chemical additives are made up of three components, the
One component be polybasic carboxylic acid and/or polybasic carboxylic acid soluble-salt, the second component be calcium chloride, barium chloride, zinc chloride, calcium nitrate,
One or more combinations in barium nitrate, zinc nitrate, calcium sulfate, barium sulfate and zinc sulfate；Third component is polyethylene glycol, 12
One or more combinations in sodium alkyl sulfate, neopelex, OP-10；First in the compound chemical additives
Component：Second component：The mass ratio of third component is 1:1.5~2:0.2~0.5；
（4）By step（3）Obtained winnofil suspension conventionally after dehydration, drying, produces bar-shaped aragonite
Type calcium carbonate.
2. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：The temperature of the calcining is
950~1150℃。
3. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：Water temperature is in digestion process
25~30℃。
4. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：The solid content of lime white is
12~15%。
5. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：Titanium dioxide in the kiln gas
The volume content of carbon is 10 ~ 60%.
6. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：The flow for being passed through kiln gas is
4~10m3/h。
7. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：Step（3）The stirring
Speed be 200 ~ 700r/min.
8. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：First component is penta
One or more compositions in diacid, oxalic acid, butanedioic acid, malonic acid, tartaric acid, malic acid, sodium citrate.
9. the preparation method of bar-shaped aragonite calcium carbonate according to claim 1, it is characterised in that：Second component is sulphur
One or more compositions in sour barium, zinc chloride, calcium nitrate, calcium sulfate, zinc sulfate, calcium chloride.
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| CN107445188B (en) * | 2017-09-18 | 2019-03-15 | 广西华纳新材料科技有限公司 | A kind of preparation method of rod-like precipitates calcium carbonate |
| CN107916452B (en) * | 2017-11-14 | 2020-03-03 | 浙江大学 | Preparation method of calcium carbonate whiskers with continuously controllable morphology |
| CN111268712A (en) * | 2018-12-04 | 2020-06-12 | 天津大学 | Method for preparing nano calcium carbonate by using crystal form control agent for regulation and control |
| CN109971036B (en) * | 2019-03-29 | 2023-02-21 | 桂林理工大学 | Preparation method of monodisperse ultra-narrow distributed calcium carbonate for PET transparent film |
| CN110980787B (en) * | 2019-12-25 | 2022-07-19 | 广西华纳新材料股份有限公司 | Preparation method of calcium carbonate-calcium sulfate nano composite chain material |
| CN111439769A (en) * | 2020-04-28 | 2020-07-24 | 广西夏阳环保科技有限公司 | Preparation method of high-purity and high-activity nano calcium oxide |
| CN113735155B (en) * | 2020-05-29 | 2023-04-18 | 广西夏阳环保科技有限公司 | Preparation method of special calcium oxide for plastic moisture-proof master batch |
| CN112010337A (en) * | 2020-08-31 | 2020-12-01 | 西南科技大学 | Large-size aragonite whisker prepared by carbonizing impurity-containing calcareous raw material and method thereof |
| CN112723403B (en) * | 2021-01-25 | 2023-04-07 | 连州市凯恩斯纳米材料有限公司 | Preparation method of calcium carbonate whisker |
| CN115072757B (en) * | 2022-06-27 | 2024-03-15 | 山西石器时代新材料科技有限公司 | Fine rod-shaped aragonite type calcium carbonate and preparation method thereof |
| CN115092948B (en) * | 2022-06-27 | 2024-03-15 | 山西石器时代新材料科技有限公司 | Fine rod-shaped aragonite calcium carbonate prepared by utilizing flue gas and preparation method thereof |
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| CN1303264C (en) * | 2004-01-13 | 2007-03-07 | 中国人民解放军国防科学技术大学 | Method for preparing aragonite type calcium carbonate whisker |
| JP2009067605A (en) * | 2007-09-10 | 2009-04-02 | Oita Univ | Method for producing aragonite type calcium carbonate with hexagonal plate form |
| CN101538059B (en) * | 2009-04-17 | 2011-06-15 | 北京工业大学 | Preparation method of superstructure aragonite calcium carbonate crystal |
| KR20120049990A (en) * | 2010-11-10 | 2012-05-18 | 한국지질자원연구원 | Method of preparing vaterite and vaterite prepared by using the method |
| CN104790024A (en) * | 2015-04-15 | 2015-07-22 | 广西大学 | Preparation method for aragonite calcium carbonate whisker with high length-diameter ratio |
| CN105543975A (en) * | 2015-12-30 | 2016-05-04 | 常州合肥工业大学研究院 | Method for synthesizing calcium carbonate nanocrystal whiskers on basis of sodium carboxymethyl cellulose and potassium chloride |
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Address after: 530103 No.29, Ganwei street, Ganwei Town, Wuming District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Warner New Material Co.,Ltd. Address before: 530103 No.29, Ganwei street, Ganwei Town, Wuming County, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI HUANA NEW MATERIALS TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A preparation method of rod aragonite calcium carbonate Effective date of registration: 20220715 Granted publication date: 20171031 Pledgee: Guangxi Guihui Financing Guarantee Co.,Ltd. Pledgor: Guangxi Warner New Material Co.,Ltd. Registration number: Y2022450000115 |