CN108101090A - A kind of preparation method of aciculiform winnofil - Google Patents
A kind of preparation method of aciculiform winnofil Download PDFInfo
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- CN108101090A CN108101090A CN201711449913.1A CN201711449913A CN108101090A CN 108101090 A CN108101090 A CN 108101090A CN 201711449913 A CN201711449913 A CN 201711449913A CN 108101090 A CN108101090 A CN 108101090A
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- filled
- calcium hydroxide
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- carbon dioxide
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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
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
Abstract
A kind of preparation method of aciculiform winnofil of the present invention, including：（1）Quick lime is added in warm water and is stirred, filtering is slagged tap, and obtains calcium hydroxide slurry；（2）Calcium hydroxide slurry is added in the reaction vessel equipped with scattered paddle；And be filled with carbon dioxide and add calcium hydroxide slurry in due course according to carbonization degree and adjust the rate for being filled with carbon dioxide, to obtain the water-soluble serous of aciculiform winnofil.The present invention when the carbonation rate of the last period reaction is less than 100%, begins to next section of reaction using multistage carbonizatin method, while adjust carbon dioxide is filled with rate, and aciculiform calcium carbonate is obtained with this；Preparation process is simple, at low cost, has a good application prospect.
Description
Technical field
The present invention relates to calcium carbonate field, more particularly to a kind of preparation method of aciculiform winnofil.
Background technology
Winnofil can be prepared by the way that carbon dioxide is filled with the reaction vessel equipped with calcium hydroxide slurry.It is heavy
Shallow lake calcium carbonate crystal shape has spindle, cube, aciculiform, chain, spherical shape, piece shape and corner cylindricality.These different crystal forms
Calcium carbonate can be made by control reaction condition.What general carbonizatin method obtained is spindle.If using multistage carbonizatin method, i.e., before
The carbonation rate of one section of reaction starts next section of reaction when being 100%, what is obtained is also spindle.
Spindle calcium carbonate nor very homogeneous, is mainly used for the industries such as papermaking since its pattern is not very regular.
The content of the invention
It is a primary object of the present invention to provide a kind of preparation method of aciculiform winnofil, this method uses multistage carbon
Change method when the carbonation rate of the last period reaction is less than 100%, begins to next section of reaction, while adjusts filling for carbon dioxide
Enter rate, aciculiform calcium carbonate is obtained with this；Preparation process is simple, at low cost, has a good application prospect.
A kind of preparation method of aciculiform winnofil of the present invention, including：
（1）Quick lime is added in warm water and is stirred, filtering is slagged tap, and obtains calcium hydroxide slurry；Calcium hydroxide slurry is divided into
Portion is added in the reaction vessel equipped with dispersion pulp by isometric five parts；
（2）Paragraph 1 is reacted：Dispersion pulp is opened, is filled with carbon dioxide；
2nd section of reaction：When the carbonization degree of slurry in reaction vessel is 20%-30%, then a calcium hydroxide slurry is added, second
It is secondary to be filled with carbon dioxide；
3rd section of reaction：When the carbonization degree of slurry in reaction vessel is 45%-65%, then a calcium hydroxide slurry is added, the 3rd
It is secondary to be filled with carbon dioxide；
4th section of reaction：When the carbonization degree of slurry in reaction vessel is 45%-65%, then a calcium hydroxide slurry is added, the 4th
It is secondary to be filled with carbon dioxide；
5th section of reaction：When the carbonization degree of slurry in reaction vessel is 45%-65%, then a calcium hydroxide slurry is added, the 5th
It is secondary to be filled with carbon dioxide；Until slurry carbonization degree is 100% in reaction vessel, reaction terminates, and obtains the water of aciculiform winnofil
Property slurries；
Wherein, the carbonization degree of-the 5 section of reaction paste of the 3rd section of reaction is sequentially increased.
Further, the step（1）In calcium hydroxide slurry concentration be 200 ~ 210 g/l.
Further, the step（2）In dispersion pulp open when linear velocity be 2-3 meter per seconds.
Further, the step（2）In be filled with for the first time carbon dioxide rate be with every gram of addition dry hydroxide
0.004 liter/min of calcium meter；Be filled with for the second time carbon dioxide rate be 0.008 liter in terms of every gram of addition dry calcium hydroxide/
Minute；The rate that third time is filled with carbon dioxide is 0.012 liter/min in terms of every gram of addition dry calcium hydroxide；4th time
The rate for being filled with carbon dioxide is 0.016 liter/min in terms of every gram of addition dry calcium hydroxide；It is filled with carbon dioxide 5th time
Rate be 0.020 liter/min in terms of every gram of addition dry calcium hydroxide.
Advantageous effect
The present invention, when the carbonation rate of the last period reaction is less than 100%, begins to next section of reaction, simultaneously using multistage carbonizatin method
Adjustment carbon dioxide is filled with rate, obtains aciculiform calcium carbonate with this, preparation process is simple, at low cost, have good
Application prospect；Needle-like nano calcium carbonate has many advantages, such as that whiteness is high, production cost is low, intensity is high, filling capacity is good, is expected to take
For the fibrous materials such as glass, asbestos and the potassium titanate of costliness, titanium carbide（TiC）Wait crystal whisker materials, papermaking, plastics, rubber and
The industrial circles such as coating largely use.
Description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 be in embodiment 1 after paragraph 1 reaction in reaction vessel slurries SEM micrograph；
Fig. 2 be in embodiment 1 after the 2nd section of reaction in reaction vessel slurries SEM micrograph；
Fig. 3 be in embodiment 1 after the 3rd section of reaction in reaction vessel slurries SEM micrograph；
Fig. 4 be in embodiment 1 after the 4th section of reaction in reaction vessel slurries SEM micrograph；
Fig. 5 be in embodiment 1 after the 5th section of reaction in reaction vessel slurries SEM micrograph.
Specific embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to which those skilled in the art is made to be better understood from the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, in ordinary skill
Personnel do not make all other embodiments obtained under the premise of creative work, should all belong to the protection model of the present invention
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, without being used to describe specific order or precedence.It should be appreciated that it so uses
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover non-exclusive include.
Embodiment 1
（1）It will be stirred 30 minutes in 10892 grams of water for adding in 40 liters 40 DEG C of quick lime, calcium hydroxide slurry be made；Calcium hydroxide
For slurries by 200 mesh standard sieves, the concentration of calcium hydroxide slurry is 200 g/l.Addition calcium hydroxide slurry 8, which rises to reaction, to be held
Device.
（2）Paragraph 1 is reacted：Open dispersion pulp（2.5 meter per second of linear velocity）, it is re-filled with carbon dioxide（6.4 liters/min of rate
Clock）, the microphoto of reaction product is as shown in Figure 1, as shown in Figure 1, obtained the blank of aciculiform calcium carbonate, but draw ratio is also
It is smaller；When the carbonization degree of slurry in reaction vessel is 26.1%,
2nd section of reaction：Calcium hydroxide slurry 8 is added again and rises to the reaction vessel, and the speed adjust for being filled with carbon dioxide is 12.8
Liter/min, the microphoto of reaction product is as shown in Fig. 2, as shown in Figure 2, there is needle-like calcium carbonate；Work as reaction vessel
When interior slurry carbonization degree is 47.4%,
3rd section of reaction：Calcium hydroxide slurry 8 is added again and rises to the reaction vessel, and the speed adjust for being filled with carbon dioxide is 19.2
Liter/min, the microphoto of reaction product has length can as shown in figure 3, from the figure 3, it may be seen that needle-like calcium carbonate draw ratio is very big
To reach several microns.When slurry carbonization degree is 59.5% in reaction vessel,
4th section of reaction：Calcium hydroxide slurry 8 is added again and rises to the reaction vessel, and the speed adjust for being filled with carbon dioxide is 25.6
Liter/min, the microphoto of reaction product is as shown in figure 4, as shown in Figure 4, needle-like calcium carbonate is gradually grown up.When in reaction vessel
When slurry carbonization degree is 62.21%,
5th section of reaction：Add calcium hydroxide slurry 8 again and rise to the reaction vessel, be filled with the speed adjust of carbon dioxide for 32 liters/
Minute；Until slurry carbonization degree is 100% in reaction vessel.Reaction terminates, and obtains the water-soluble serous of aciculiform winnofil, instead
The microphoto of product is answered as shown in figure 5, as shown in Figure 5, needle-like calcium carbonate draw ratio is very big, very homogeneous.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of preparation method of aciculiform winnofil, including：（1）Quick lime is added in warm water and is stirred, filtering is slagged tap,
Obtain calcium hydroxide slurry；Calcium hydroxide slurry is divided into isometric five parts, portion is added to the reaction equipped with dispersion pulp
In container；（2）Paragraph 1 is reacted：Dispersion pulp is opened, is filled with carbon dioxide；2nd section of reaction：When the charing of slurry in reaction vessel
When rate is 20%-30%, then a calcium hydroxide slurry is added, be filled with carbon dioxide for the second time；3rd section of reaction：Work as reaction vessel
When the carbonization degree of interior slurry is 45%-65%, then a calcium hydroxide slurry is added, be filled with carbon dioxide for the third time；4th section anti-
It should：When the carbonization degree of slurry in reaction vessel is 45%-65%, then a calcium hydroxide slurry is added, be filled with dioxy the 4th time
Change carbon；5th section of reaction：When the carbonization degree of slurry in reaction vessel is 45%-65%, then a calcium hydroxide slurry is added, the
It is filled with carbon dioxide five times；Until slurry carbonization degree is 100% in reaction vessel, reaction terminates, and obtains aciculiform winnofil
It is water-soluble serous；Wherein, the carbonization degree of-the 5 section of reaction paste of the 3rd section of reaction is sequentially increased.
2. a kind of preparation method of aciculiform winnofil according to claim 1, it is characterised in that：The step（1）
In calcium hydroxide slurry concentration be 200 ~ 210 g/l.
3. a kind of preparation method of aciculiform winnofil according to claim 1, it is characterised in that：The step（2）
In dispersion pulp open when linear velocity be 2-3 meter per seconds.
4. a kind of preparation method of aciculiform winnofil according to claim 1, it is characterised in that：The step（2）
In be filled with for the first time carbon dioxide rate be 0.004 liter/min in terms of every gram of addition dry calcium hydroxide；Two are filled with for the second time
The rate of carbonoxide is 0.008 liter/min in terms of every gram of addition dry calcium hydroxide；Third time is filled with the rate of carbon dioxide
For 0.012 liter/min in terms of every gram of addition dry calcium hydroxide；4th rate for being filled with carbon dioxide is with the every of addition
Gram dry 0.016 liter/min of calcium hydroxide meter；5th rate for being filled with carbon dioxide is with every gram of addition dry hydroxide
0.020 liter/min of calcium meter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449913.1A CN108101090B (en) | 2017-12-27 | 2017-12-27 | Preparation method of needle-shaped precipitated calcium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711449913.1A CN108101090B (en) | 2017-12-27 | 2017-12-27 | Preparation method of needle-shaped precipitated calcium carbonate |
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| CN108101090A true CN108101090A (en) | 2018-06-01 |
| CN108101090B CN108101090B (en) | 2020-04-28 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697782A (en) * | 2003-06-05 | 2005-11-16 | 奥多摩工业株式会社 | Light calcium carbonate, method for production thereof and loading material for loading into paper |
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2017
- 2017-12-27 CN CN201711449913.1A patent/CN108101090B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697782A (en) * | 2003-06-05 | 2005-11-16 | 奥多摩工业株式会社 | Light calcium carbonate, method for production thereof and loading material for loading into paper |
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| CN108101090B (en) | 2020-04-28 |
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