CN108929570A - A kind of method of wet production super fine calcium carbonate - Google Patents
A kind of method of wet production super fine calcium carbonate Download PDFInfo
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- CN108929570A CN108929570A CN201810444319.1A CN201810444319A CN108929570A CN 108929570 A CN108929570 A CN 108929570A CN 201810444319 A CN201810444319 A CN 201810444319A CN 108929570 A CN108929570 A CN 108929570A
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- calcium carbonate
- super fine
- fine calcium
- wet
- ultrafine powder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/041—Grinding
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of methods of wet production super fine calcium carbonate, include the following steps：It crushes；Micro mist flour mill milling；Coupling agent and dispersing agent is added in wet grinding；Sieving；It is dry.The dispersion performance that calcium carbonate can be improved well through the invention, prevents from reuniting during grinding and drying.
Description
Technical field
The present invention relates to a kind of preparation method of calcium carbonate, especially a kind of method of wet production super fine calcium carbonate.
Background technique
Powdered whiting is usually crushed by natural carbonate mineral such as calcite, marble and lime stone and is made, weight
Calcium has the characteristics that whiteness is high, purity is good, form and aspect are soft, therefore is widely used in artificial floor tile, rubber, plastics, papermaking, painting
The industries such as material, paint, ink, cable, building product, food, medicine, weaving, feed, toothpaste, are typically used as filler, or
It is reinforcing agent.
According to calcium carbonate powder average grain diameter（d）Size, calcium carbonate can be divided into particle calcium carbonate（d>5μm）, it is super
Fine calcium carbonate（1μm<d<5μm）, fine calcium carbonate（0.1μm<d≤1μm）, calcium carbonate superfine powder（0.02μm<d≤0.1μm）With
Super fine calcium carbonate（d≤0.02μm）.
Super fine calcium carbonate due to having the advantages that small partial size, epigranular, high surface activity, be widely used in coating,
The every profession and trades such as plastics, papermaking, ink.But the calcium carbonate of dry production can only achieve fine rank, and in wet production, how
Powder adhesion preferably is prevented, while how to be able to maintain the ultra tiny calcium carbonate of acquisition in slurry drying process after filtration to be
Extremely important problem.
Summary of the invention
The invention discloses a kind of methods of wet production super fine calcium carbonate, can improve the dispersibility of calcium carbonate well
Can, it prevents from reuniting during grinding and drying.
To achieve the above object, the technical scheme is that：
A kind of method of wet production super fine calcium carbonate, includes the following steps：
S1. coarse crushing and crushing are carried out to calcite raw material, obtains the calcite in powder body of 100 ~ 200 mesh；
S2. it is milled with micro mist flour mill, partial size is screened out after the completion of milling<5 μm of ultrafine powder；
S3. water is added to be made into slurry ultrafine powder, the weight ratio of water and ultrafine powder is 100 ~ 90：30 ~ 50, using wet grinding
Machine is ground, and zirconium oxide microballon, silane coupling agent, sodium pyrophosphate, friction-type titanium dioxide is added simultaneously in wet grinding mill
Silicon and phosphate diester salt are ground, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and Ultramicro-powder
The weight ratio of body is 0.2 ~ 0.5:0.05~0.1:0.03~0.05:0.05~0.1:30 ~ 50,40 ~ 50min of milling time, temperature 50
~60℃；
S4. the slurry obtained after wet grinding is crossed into vibrating screen, obtains super fine calcium carbonate slurry；
S5., it is 15 ~ 20% that super fine calcium carbonate slurry is dried to moisture content in advance, is then placed in drying in pneumatic drier,
Up to super fine calcium carbonate.
Preferably, in the step S3, the weight ratio of water and ultrafine powder is 100:45.
Preferably, in the step S3, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and super
The weight ratio of powder body is 0.3:0.08:0.04:0.08:45.
Preferably, in the step S3, milling time 45min, 56 DEG C of temperature
Preferably, in the step S5, the temperature of drying tube is 100 ~ 120 DEG C in pneumatic drier, air velocity is 20 ~ 30m/
s。
A kind of method of above-described wet production super fine calcium carbonate, has the following advantages that：
（1）Present invention adds dispersing agent, coupling agent, coupling agent can improve the surface property of calcium carbonate, reduce its viscosity, improve
The dispersion performance of calcium carbonate, joined dispersing agent can prevent from reuniting during grinding, improve the efficiency of wet grinding.
（2）The present invention is dried calcium carbonate by using pneumatic drier, accelerates dry speed, is also avoided that
The problem of secondary agglomeration occurs in drying process.
Specific embodiment
Below with reference to specific embodiment, the invention will be further described, but protection scope of the present invention be not limited to it is following
Embodiment.
Embodiment 1
A kind of method of wet production super fine calcium carbonate, includes the following steps：
S1. coarse crushing and crushing are carried out to calcite raw material, obtains the calcite in powder body of 100 ~ 200 mesh；
S2. it is milled with micro mist flour mill, partial size is screened out after the completion of milling<5 μm of ultrafine powder；
S3. water is added to be made into slurry ultrafine powder, the weight ratio of water and ultrafine powder is 100:45, it is carried out using wet grinding mill
Zirconium oxide microballon, silane coupling agent, sodium pyrophosphate, friction-type silica and phosphorus is added in grinding simultaneously in wet grinding mill
Acid diester salt is ground, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and ultrafine powder weight
Amount is than being 0.3:0.08:0.04:0.08:45, milling time 45min, 56 DEG C of temperature；
S4. the slurry obtained after wet grinding is crossed into vibrating screen, obtains super fine calcium carbonate slurry；
S5., it is 15 ~ 20% that super fine calcium carbonate slurry is dried to moisture content in advance, is then placed in drying in pneumatic drier,
The temperature of drying tube is 110 DEG C, air velocity 25m/s, it is dry after up to super fine calcium carbonate.
Embodiment 2
A kind of method of wet production super fine calcium carbonate, includes the following steps：
S1. coarse crushing and crushing are carried out to calcite raw material, obtains the calcite in powder body of 100 ~ 200 mesh；
S2. it is milled with micro mist flour mill, partial size is screened out after the completion of milling<5 μm of ultrafine powder；
S3. water is added to be made into slurry ultrafine powder, the weight ratio of water and ultrafine powder is 100:50, it is carried out using wet grinding mill
Zirconium oxide microballon, silane coupling agent, sodium pyrophosphate, friction-type silica and phosphorus is added in grinding simultaneously in wet grinding mill
Acid diester salt is ground, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and ultrafine powder weight
Amount is than being 0.2:0.05:0.05:0.1:50, milling time 50min, temperature 60 C；
S4. the slurry obtained after wet grinding is crossed into vibrating screen, obtains super fine calcium carbonate slurry；
S5., it is 15 ~ 20% that super fine calcium carbonate slurry is dried to moisture content in advance, is then placed in drying in pneumatic drier,
The temperature of drying tube is 100 DEG C, air velocity 20m/s, it is dry after up to super fine calcium carbonate.
Embodiment 3
A kind of method of wet production super fine calcium carbonate, includes the following steps：
S1. coarse crushing and crushing are carried out to calcite raw material, obtains the calcite in powder body of 100 ~ 200 mesh；
S2. it is milled with micro mist flour mill, partial size is screened out after the completion of milling<5 μm of ultrafine powder；
S3. water is added to be made into slurry ultrafine powder, the weight ratio of water and ultrafine powder is 90:30, it is carried out using wet grinding mill
Zirconium oxide microballon, silane coupling agent, sodium pyrophosphate, friction-type silica and phosphorus is added in grinding simultaneously in wet grinding mill
Acid diester salt is ground, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and ultrafine powder weight
Amount is than being 0.5:0.1:0.03:0.05:30, milling time 40min, temperature 50 C；
S4. the slurry obtained after wet grinding is crossed into vibrating screen, obtains super fine calcium carbonate slurry；
S5., it is 15 ~ 20% that super fine calcium carbonate slurry is dried to moisture content in advance, is then placed in drying in pneumatic drier,
The temperature of drying tube is 120 DEG C, air velocity 30m/s, it is dry after up to super fine calcium carbonate.
In above-described embodiment 1 ~ 3, it is dry after resulting super fine calcium carbonate through detection partial size between 0.02 ~ 0.1 μm,
Soilless sticking phenomenon.
Super fine calcium carbonate made from above-described embodiment 1 ~ 3, with the super fine calcium carbonate of certain brand bought in the market into
Row infiltration test, the super fine calcium carbonate of 1kg are added the water of the sorbierite of 1kg, 2kg, are put into reaction kettle and stir, testing result
It is as follows：
Claims (5)
1. a kind of method of wet production super fine calcium carbonate, it is characterised in that include the following steps：
S1. coarse crushing and crushing are carried out to calcite raw material, obtains the calcite in powder body of 100 ~ 200 mesh；
S2. it is milled with micro mist flour mill, partial size is screened out after the completion of milling<5 μm of ultrafine powder；
S3. water is added to be made into slurry ultrafine powder, the weight ratio of water and ultrafine powder is 100 ~ 90：30 ~ 50, using wet grinding
Machine is ground, and zirconium oxide microballon, silane coupling agent, sodium pyrophosphate, friction-type titanium dioxide is added simultaneously in wet grinding mill
Silicon and phosphate diester salt are ground, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and Ultramicro-powder
The weight ratio of body is 0.2 ~ 0.5:0.05~0.1:0.03~0.05:0.05~0.1:30 ~ 50,40 ~ 50min of milling time, temperature 50
~60℃；
S4. the slurry obtained after wet grinding is crossed into vibrating screen, obtains super fine calcium carbonate slurry；
S5., it is 15 ~ 20% that super fine calcium carbonate slurry is dried to moisture content in advance, is then placed in drying in pneumatic drier,
Up to super fine calcium carbonate.
2. a kind of method of wet production super fine calcium carbonate according to claim 1, it is characterised in that：The step S3
In, the weight ratio of water and ultrafine powder is 100:45.
3. a kind of method of wet production super fine calcium carbonate according to claim 1, it is characterised in that：The step S3
In, silane coupling agent, sodium pyrophosphate, friction-type silica, phosphate diester salt and ultrafine powder weight ratio be 0.3:0.08:
0.04:0.08:45。
4. a kind of method of wet production super fine calcium carbonate according to claim 1, it is characterised in that：The step S3
In, milling time 45min, 56 DEG C of temperature.
5. a kind of method of wet production super fine calcium carbonate according to claim 1, it is characterised in that：The step S5
In, the temperature of drying tube is 100 ~ 120 DEG C in pneumatic drier, air velocity is 20 ~ 30m/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810444319.1A CN108929570A (en) | 2018-05-10 | 2018-05-10 | A kind of method of wet production super fine calcium carbonate |
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| CN201810444319.1A CN108929570A (en) | 2018-05-10 | 2018-05-10 | A kind of method of wet production super fine calcium carbonate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256872A (en) * | 2019-07-19 | 2019-09-20 | 良德纳米粉体创新科技(安徽)有限公司 | Super fine calcium carbonate and its processing method |
| CN110358328A (en) * | 2019-07-19 | 2019-10-22 | 良德纳米粉体创新科技(安徽)有限公司 | Nano activated calcium carbonate and its processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063757A1 (en) * | 2008-12-04 | 2010-06-10 | Omya Development Ag | Process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties |
| CN104744971A (en) * | 2015-03-04 | 2015-07-01 | 江西科越科技有限公司 | Preparation process of wet-process superfine modified calcium carbonate |
| CN106433220A (en) * | 2016-08-22 | 2017-02-22 | 江西广源化工有限责任公司 | Preparation method of modified superfine calcium carbonate powder and product of preparation method |
-
2018
- 2018-05-10 CN CN201810444319.1A patent/CN108929570A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063757A1 (en) * | 2008-12-04 | 2010-06-10 | Omya Development Ag | Process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties |
| CN104744971A (en) * | 2015-03-04 | 2015-07-01 | 江西科越科技有限公司 | Preparation process of wet-process superfine modified calcium carbonate |
| CN106433220A (en) * | 2016-08-22 | 2017-02-22 | 江西广源化工有限责任公司 | Preparation method of modified superfine calcium carbonate powder and product of preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256872A (en) * | 2019-07-19 | 2019-09-20 | 良德纳米粉体创新科技(安徽)有限公司 | Super fine calcium carbonate and its processing method |
| CN110358328A (en) * | 2019-07-19 | 2019-10-22 | 良德纳米粉体创新科技(安徽)有限公司 | Nano activated calcium carbonate and its processing method |
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