CN109160531A - A kind of environment-friendly preparation method thereof of nanometer calcium carbonate - Google Patents
A kind of environment-friendly preparation method thereof of nanometer calcium carbonate Download PDFInfo
- Publication number
- CN109160531A CN109160531A CN201811352215.4A CN201811352215A CN109160531A CN 109160531 A CN109160531 A CN 109160531A CN 201811352215 A CN201811352215 A CN 201811352215A CN 109160531 A CN109160531 A CN 109160531A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- nanometer calcium
- environment
- temperature
- friendly preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention belongs to technical field of chemical material preparation, and in particular to a kind of environment-friendly preparation method thereof of nanometer calcium carbonate includes the following steps: step 1, calcium chloride is dissolved in distilled water, and 10-20min is stirred by ultrasonic, obtains calcium chloride solution；Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 2-4h obtains crystallization suspension；Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion liquid；Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release cooling obtains nanometer calcium carbonate after filtering.The problem of present invention solves existing nanometer calcium carbonate and reunites seriously, bad dispersibility, by double spray systems, controls the formation and dispersion of nanometer calcium carbonate, solves agglomeration traits, while being effectively controlled the partial size of nanometer calcium carbonate.
Description
Technical field
The invention belongs to technical field of chemical material preparation, and in particular to a kind of environment-friendly preparation method thereof of nanometer calcium carbonate.
Background technique
Nanometer calcium carbonate is also known as super fine calcium carbonate, title, that is, calcium carbonate superfine powder of standard, nanometer calcium carbonate application most at
Ripe industry is that plastics industry is mainly used in high-grade plastic products.Nanometer calcium carbonate can improve the rheological characteristic of plastic matrix, mention
Its high mouldability, has the function of toughened and reinforced when being used as plastic filler, and can improve the bending strength of plastics, the elasticity of flexure
Modulus, heat distortion temperature and dimensional stability, while it is stagnant hot also to assign plastics.Nanometer calcium carbonate is when in ink product
Excellent dispersibility and the transparency, fabulous gloss and excellent ink absorption and high drying property are embodied.And nanometer
When calcium carbonate makees ink filler in resin type ink, there is the drying property that stability is good, glossiness is high, does not influence printing ink
Can, it is adaptable the advantages that.Specifically, nanometer calcium carbonate is solid as a kind of Novel super-thin to grow up the 1980s
Body dusty material, granularity is between 10~100nm.Due to the fine of Nano particles of calcium carbonate, crystal structure and table
Face electronic structure changes, and produces quantum size effect, small-size effect, skin effect that ordinary calcium carbonate does not have
And macroscopic quantum effect.The shape of nanometer calcium carbonate and the type of modified product are more, there is spindle, cube, aciculiform, chain
The shapes such as shape and spherical shape.
Since nanometer calcium carbonate partial size is small, surface ratio is big, and surface lacks the coordination atom closed on, thus has very high
Activity.But nanometer calcium carbonate is in heating power tuition fee stable state, thus there is strong attract each other and particle aggregation reaches
Steady tendency, so nanometer calcium carbonate is easy to precipitate and gather in water or organic solvent, improve nano-calcium carbonate height in water and
The dispersibility and suspension of organic solvent are required at present.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of environment-friendly preparation method thereof of nanometer calcium carbonate, solves existing
There is nanometer calcium carbonate to reunite serious, the problem of bad dispersibility, by double spray systems, control the formation of nanometer calcium carbonate with point
It dissipates, solves agglomeration traits, while being effectively controlled the partial size of nanometer calcium carbonate.
To realize the above technical purpose, the technical scheme is that
A kind of environment-friendly preparation method thereof of nanometer calcium carbonate, includes the following steps:
Step 1, calcium chloride is dissolved in distilled water, 10-20min is stirred by ultrasonic, obtains calcium chloride solution；
Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 2-4h obtains crystallization suspension；
Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion
Liquid；
Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release is cooling after filtering
Obtain nanometer calcium carbonate.
Concentration of the calcium chloride in distilled water in the step 1 is 10-30g/L, and the supersonic frequency of ultrasonic agitation is 30-
50kHz, temperature are 50-60 DEG C.
The concentration of sodium hydroxide solution in the step 2 is 1.5-3mol/L, and the additional amount of sodium hydroxide is calcium chloride
2.1-2.3 times of mole.
The temperature of constant temperature microwave reaction in the step 2 is 35-55 DEG C, microwave power 300-800W.
The spray rate of crystallization suspension in the step 3 is 2-5mL/min, and the spray temperature is 30-40 DEG C, institute
Stating dehydrated alcohol-CO 2 supercritical mixed liquor volume is 5-10 times for crystallizing suspension volume.
The dehydrated alcohol-dehydrated alcohol of CO 2 supercritical mixed liquor and the volume of Co 2 supercritical fluid
Than for 3-7:4, the dehydrated alcohol -- the pressure of CO 2 supercritical mixed liquor is 6-8MPa, temperature is 30-35 DEG C.
The temperature of constant temperature and pressure spray reaction in the step 4 is 60-70 DEG C, pressure 0.2-0.5MPa.
The temperature of cooling in the step 4 is 2-10 DEG C, and the speed of pressure release is 0.01-0.05MPa/min.
Calcium chloride is dissolved in distilled water by step 1, forms calcium chloride solution, and by chlorination under the conditions of ultrasonic agitation
Calcium is evenly dispersed into solution, forms homogeneity solution.
Sodium hydroxide solution is added into calcium chloride solution step 2, with calcium chloride reacts to obtain using sodium hydroxide micro-
The characteristic of molten object calcium hydroxide forms crystallization reaction；Become smaller based on the solubility of calcium hydroxide with the increase of temperature, it can
The solubility for substantially reducing calcium hydroxide facilitates the generation of crystallization；The oscillation of microwave is able to ascend sodium hydroxide and calcium chloride
Reaction efficiency, while calcium hydroxide can be broken and turn to bond energy in crystallization process by dissolution, it is outstanding to obtain crystallization for raising efficiency
Turbid；Microwave reaction can also play the role of vibrating dispersion, be able to ascend its dispersibility, form suspended system.
Suspension is sprayed in mixed liquor by step 3, and calcium hydroxide and carbon dioxide form quick dissolution, and replace shape
At calcium carbonate particle, the sodium chloride itself in suspension can be dissolved in dehydrated alcohol, achieve the effect that quickly to remove；Due to
The mode of spray is capable of forming good dispersibility, is aided with the dispersibility of solution itself, obtains calcium carbonate and reaches nanoscale, and receives
Rice titanium dioxide surface accumulates a large amount of ethyl alcohol particles, achievees the purpose that dispersion；So the suspension obtained after spray is to receive
Rice calcium carbonate is suspension particle, and dehydrated alcohol-CO 2 supercritical mixed liquor is solvent, miscellaneous containing sodium chloride, distilled water etc.
Matter.
Step 4 is removed Co 2 supercritical fluid by the way of constant temperature and pressure spray, obtains dehydrated alcohol system
Solution, and sodium chloride and distilled water can be dissolved in dehydrated alcohol, and the precipitating finally obtained is nanometer calcium carbonate, be passed through
Nano particles of calcium carbonate is obtained after filter, forms stable nano-scale particle after the second-time breakage of pressure release, and is led to overcooled
Low-surface-energy drops in mode, is stablized and finely dispersed Nano particles of calcium carbonate.
From the above, it can be seen that the present invention has following advantages:
1. the problem of present invention solves existing nanometer calcium carbonate reunion seriously, bad dispersibility, passes through double spray systems, control
The formation and dispersion of nanometer calcium carbonate processed, solve agglomeration traits, while being effectively controlled the partial size of nanometer calcium carbonate.
2, the present invention is reacted by Co 2 supercritical fluid with the calcium hydroxide drop formation after spray, not only quickly
It is converted into nanometer calcium carbonate, while also improving the dispersibility of nanometer calcium carbonate, continuous-flow type reaction is formed, by reducing unit plane
The mode of nano-calcium carbonate calcium content in product controls reunion.
3. the present invention uses dehydrated alcohol-CO 2 supercritical mixed liquor as solvent, and the nothing in late phase reaction
Water-ethanol can recycle, and Co 2 supercritical fluid can be directly discharged in air, non-environmental-pollution problem.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of nanometer calcium carbonate prepared by the embodiment of the present invention 1.
Specific embodiment
In conjunction with Fig. 1, the specific embodiment that the present invention will be described in detail, but any limit is not done to claim of the invention
It is fixed.
Embodiment 1
A kind of environment-friendly preparation method thereof of nanometer calcium carbonate, includes the following steps:
Step 1, calcium chloride is dissolved in distilled water, 10min is stirred by ultrasonic, obtains calcium chloride solution；
Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 2h obtains crystallization suspension；
Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion
Liquid；
Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release is cooling after filtering
Obtain nanometer calcium carbonate.
Concentration of the calcium chloride in distilled water in the step 1 is 10g/L, and the supersonic frequency of ultrasonic agitation is 30kHz,
Temperature is 50 DEG C.
The concentration of sodium hydroxide solution in the step 2 is 1.5mol/L, and the additional amount of sodium hydroxide is that calcium chloride rubs
2.1 times of that amount.
The temperature of constant temperature microwave reaction in the step 2 is 35 DEG C, microwave power 300W.
The spray rate of crystallization suspension in the step 3 is 2mL/min, and the spray temperature is 30 DEG C, the nothing
Water-ethanol-CO 2 supercritical mixed liquor volume is 5 times for crystallizing suspension volume.
The dehydrated alcohol-dehydrated alcohol of CO 2 supercritical mixed liquor and the volume of Co 2 supercritical fluid
Than for 3:4, the dehydrated alcohol -- the pressure of CO 2 supercritical mixed liquor is 6-8MPa, temperature is 30 DEG C.
The temperature of constant temperature and pressure spray reaction in the step 4 is 60 DEG C, pressure 0.2MPa.
The temperature of cooling in the step 4 is 2 DEG C, and the speed of pressure release is 0.01MPa/min.
Through detecting, the partial size of the nanometer calcium carbonate of preparation is 25nm, and scanning electron microscope (SEM) photograph is as shown in Figure 1.
Embodiment 2
A kind of environment-friendly preparation method thereof of nanometer calcium carbonate, includes the following steps:
Step 1, calcium chloride is dissolved in distilled water, 20min is stirred by ultrasonic, obtains calcium chloride solution；
Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 4h obtains crystallization suspension；
Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion
Liquid；
Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release is cooling after filtering
Obtain nanometer calcium carbonate.
Concentration of the calcium chloride in distilled water in the step 1 is 30g/L, and the supersonic frequency of ultrasonic agitation is 50kHz,
Temperature is 60 DEG C.
The concentration of sodium hydroxide solution in the step 2 is 3mol/L, and the additional amount of sodium hydroxide is calcium chloride mole
2.3 times of amount.
The temperature of constant temperature microwave reaction in the step 2 is 55 DEG C, microwave power 800W.
The spray rate of crystallization suspension in the step 3 is 5mL/min, and the spray temperature is 40 DEG C, the nothing
Water-ethanol-CO 2 supercritical mixed liquor volume is 10 times for crystallizing suspension volume.
The dehydrated alcohol-dehydrated alcohol of CO 2 supercritical mixed liquor and the volume of Co 2 supercritical fluid
Than for 7:4, the dehydrated alcohol -- the pressure of CO 2 supercritical mixed liquor is 8MPa, temperature is 35 DEG C.
The temperature of constant temperature and pressure spray reaction in the step 4 is 70 DEG C, pressure 0.5MPa.
The temperature of cooling in the step 4 is 10 DEG C, and the speed of pressure release is 0.05MPa/min.
Embodiment 3
A kind of environment-friendly preparation method thereof of nanometer calcium carbonate, includes the following steps:
Step 1, calcium chloride is dissolved in distilled water, 15min is stirred by ultrasonic, obtains calcium chloride solution；
Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 3h obtains crystallization suspension；
Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion
Liquid；
Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release is cooling after filtering
Obtain nanometer calcium carbonate.
Concentration of the calcium chloride in distilled water in the step 1 is 20g/L, and the supersonic frequency of ultrasonic agitation is 40kHz,
Temperature is 55 DEG C.
The concentration of sodium hydroxide solution in the step 2 is 2mol/L, and the additional amount of sodium hydroxide is calcium chloride mole
2.2 times of amount.
The temperature of constant temperature microwave reaction in the step 2 is 45 DEG C, microwave power 600W.
The spray rate of crystallization suspension in the step 3 is 4mL/min, and the spray temperature is 35 DEG C, the nothing
Water-ethanol-CO 2 supercritical mixed liquor volume is 8 times for crystallizing suspension volume.
The dehydrated alcohol-dehydrated alcohol of CO 2 supercritical mixed liquor and the volume of Co 2 supercritical fluid
Than for 5:4, the dehydrated alcohol -- the pressure of CO 2 supercritical mixed liquor is 7MPa, temperature is 33 DEG C.
The temperature of constant temperature and pressure spray reaction in the step 4 is 65 DEG C, pressure 0.4MPa.
The temperature of cooling in the step 4 is 6 DEG C, and the speed of pressure release is 0.03MPa/min.
Performance detection
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Partial size | 25nm | 40nm | 35nm |
| Particle diameter distribution rate | 78% | 85% | 88% |
In conclusion the invention has the following advantages that
1. the problem of present invention solves existing nanometer calcium carbonate reunion seriously, bad dispersibility, passes through double spray systems, control
The formation and dispersion of nanometer calcium carbonate processed, solve agglomeration traits, while being effectively controlled the partial size of nanometer calcium carbonate.
2, the present invention is reacted by Co 2 supercritical fluid with the calcium hydroxide drop formation after spray, not only quickly
It is converted into nanometer calcium carbonate, while also improving the dispersibility of nanometer calcium carbonate, continuous-flow type reaction is formed, by reducing unit plane
The mode of nano-calcium carbonate calcium content in product controls reunion.
3. the present invention uses dehydrated alcohol-CO 2 supercritical mixed liquor as solvent, and the nothing in late phase reaction
Water-ethanol can recycle, and Co 2 supercritical fluid can be directly discharged in air, non-environmental-pollution problem.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments.Those skilled in the art should understand that still can be carried out to the present invention
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate, characterized by the following steps:
Step 1, calcium chloride is dissolved in distilled water, 10-20min is stirred by ultrasonic, obtains calcium chloride solution；
Step 2, sodium hydroxide solution is added in calcium chloride solution, constant temperature microwave reaction 2-4h obtains crystallization suspension；
Step 3, crystallization suspension is sprayed in dehydrated alcohol-CO 2 supercritical mixed liquor, forms suspended dispersion liquid；
Step 4, suspended dispersion liquid is added into spray equipment and carries out constant temperature and pressure spray reaction, pressure release cooling obtains after filtering
Nanometer calcium carbonate.
2. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 1
Concentration of the calcium chloride in distilled water be 10-30g/L, the supersonic frequency of ultrasonic agitation is 30-50kHz, temperature 50-60
℃。
3. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 2
Sodium hydroxide solution concentration be 1.5-3mol/L, the additional amount of sodium hydroxide is 2.1-2.3 times of calcium chloride mole.
4. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 2
Constant temperature microwave reaction temperature be 35-55 DEG C, microwave power 300-800W.
5. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 3
Crystallization suspension spray rate be 2-5mL/min, the spray temperature be 30-40 DEG C, the dehydrated alcohol-carbon dioxide
The volume of overcritical mixed liquor is 5-10 times for crystallizing suspension volume.
6. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 5, it is characterised in that: the anhydrous second
The volume ratio of alcohol-CO 2 supercritical mixed liquor dehydrated alcohol and Co 2 supercritical fluid is 3-7:4, described anhydrous
Ethyl alcohol -- the pressure of CO 2 supercritical mixed liquor is 6-8MPa, and temperature is 30-35 DEG C.
7. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 4
Constant temperature and pressure spray reaction temperature be 60-70 DEG C, pressure 0.2-0.5MPa.
8. a kind of environment-friendly preparation method thereof of nanometer calcium carbonate according to claim 1, it is characterised in that: in the step 4
The temperature of cooling be 2-10 DEG C, the speed of pressure release is 0.01-0.05MPa/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352215.4A CN109160531B (en) | 2018-11-14 | 2018-11-14 | Green preparation method of nano calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352215.4A CN109160531B (en) | 2018-11-14 | 2018-11-14 | Green preparation method of nano calcium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109160531A true CN109160531A (en) | 2019-01-08 |
| CN109160531B CN109160531B (en) | 2020-11-24 |
Family
ID=64877083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811352215.4A Active CN109160531B (en) | 2018-11-14 | 2018-11-14 | Green preparation method of nano calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109160531B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574057A (en) * | 2019-01-14 | 2019-04-05 | 江油市万山矿业有限公司 | A kind of preparation method of calcium carbonate |
| CN110591415A (en) * | 2019-10-11 | 2019-12-20 | 常熟市宏宇钙化物有限公司 | Preparation method of anti-agglomeration modified nano calcium carbonate |
| CN115367778A (en) * | 2022-08-16 | 2022-11-22 | 枣阳锦江粉体科技材料有限公司 | Green preparation method of modified nano calcium carbonate with uniform particle size |
| EP4021619A4 (en) * | 2019-08-26 | 2023-05-24 | Petroliam Nasional Berhad (Petronas) | Method for sequestering carbon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092241A (en) * | 2007-07-27 | 2007-12-26 | 中国铝业股份有限公司 | Method for synthesizing flame retardant of magnesium hydroxide |
| CN105417566A (en) * | 2015-11-26 | 2016-03-23 | 恩平粤怡化工有限公司 | Method for preparing nano calcium carbonate through full-automatic rotating pressure jet-carbonation technology |
-
2018
- 2018-11-14 CN CN201811352215.4A patent/CN109160531B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092241A (en) * | 2007-07-27 | 2007-12-26 | 中国铝业股份有限公司 | Method for synthesizing flame retardant of magnesium hydroxide |
| CN105417566A (en) * | 2015-11-26 | 2016-03-23 | 恩平粤怡化工有限公司 | Method for preparing nano calcium carbonate through full-automatic rotating pressure jet-carbonation technology |
Non-Patent Citations (1)
| Title |
|---|
| G. MONTES-HERNANDEZ ET AL.: ""Calcite precipitation from CO2-H2O–Ca(OH)2 slurry under high pressure of CO2"", 《JOURNAL OF CRYSTAL GROWTH》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574057A (en) * | 2019-01-14 | 2019-04-05 | 江油市万山矿业有限公司 | A kind of preparation method of calcium carbonate |
| CN109574057B (en) * | 2019-01-14 | 2020-12-25 | 江油市万山矿业有限公司 | Preparation method of calcium carbonate |
| EP4021619A4 (en) * | 2019-08-26 | 2023-05-24 | Petroliam Nasional Berhad (Petronas) | Method for sequestering carbon |
| CN110591415A (en) * | 2019-10-11 | 2019-12-20 | 常熟市宏宇钙化物有限公司 | Preparation method of anti-agglomeration modified nano calcium carbonate |
| CN115367778A (en) * | 2022-08-16 | 2022-11-22 | 枣阳锦江粉体科技材料有限公司 | Green preparation method of modified nano calcium carbonate with uniform particle size |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109160531B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109160531A (en) | A kind of environment-friendly preparation method thereof of nanometer calcium carbonate | |
| CN109319815B (en) | Preparation method of nano calcium carbonate | |
| CN106317963B (en) | A kind of preparation method of modified calcium carbonate | |
| CN103663527A (en) | Preparation method of cubic ultra-fine calcium carbonate particles | |
| CN108821322B (en) | Preparation method of microsphere precipitated calcium carbonate with layered structure | |
| CN101280127B (en) | Preparation of deposited white carbon black for plastic film anti-block agent | |
| CN111777089A (en) | Preparation method of high-purity vaterite type calcium carbonate microspheres | |
| CN110372020A (en) | A kind of preparation method of high-efficiency oxy-hydrogen aluminium crystal seed | |
| WO2020140358A1 (en) | Method for preparing silica microspheres for acidifier carrier | |
| CN104549540B (en) | A kind of preparation method of macropore amorphous silicon alumina supporter | |
| CN102500299B (en) | Preparation method for nanoscale modified magnesium hydroxide | |
| CN109110769A (en) | A kind of high dispersive silica and preparation method thereof | |
| CN113666380A (en) | Preparation method of spherical silicon dioxide | |
| CN113104877A (en) | Preparation method and application of superfine dolomite | |
| CN105601757A (en) | Preparation method of drug carrier crosslinking-modified rice starch nanocrystals | |
| CN106698444A (en) | Hypergravity liquid precipitation method of preparing silicone dioxide nanometer granule based on rice hull ash | |
| CN106590052A (en) | Polydopamine polyethenoxy ether active agent modified shape-controllable nano calcium carbonate powder and preparation method thereof | |
| CN110065960A (en) | A kind of preparation method of the spherical calcium carbonate powder of nanometer | |
| CN110591415A (en) | Preparation method of anti-agglomeration modified nano calcium carbonate | |
| CN109181366A (en) | A kind of preparation method of modified calcium carbonate and its application in the plastic | |
| CN113121210B (en) | Nano-grade alumina ceramic powder, composite ceramic material and preparation method thereof | |
| CN106365191B (en) | A kind of method that high dispersion of nano-calcium carbonate is prepared using stalactite | |
| CN116947080A (en) | Method for preparing calcium carbonate based on ultrasonic pipeline reactor | |
| CN111533951B (en) | Preparation method of aluminum silicate-white carbon black composite filler | |
| CN205886888U (en) | Compound heat stabilizer's of fine calcium zinc synthesizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220126 Address after: 530000 floors 1-5, building A-2, Nanning bioengineering technology center, No. 18 Xinji Road, Nanning, Guangxi Zhuang Autonomous Region Patentee after: NANNING HARWORLD BIOTECHNOLOGY Co.,Ltd. Address before: No.1439, Wenchang Road, Lanting street, Keqiao District, Shaoxing City, Zhejiang Province, 312000 Patentee before: Shaoxing Xiuzhen New Energy Technology Co.,Ltd. Effective date of registration: 20220126 Address after: No.1439, Wenchang Road, Lanting street, Keqiao District, Shaoxing City, Zhejiang Province, 312000 Patentee after: Shaoxing Xiuzhen New Energy Technology Co.,Ltd. Address before: 312000 No. 508 West Ring Road, Zhejiang, Shaoxing Patentee before: SHAOXING University |