CN106957538A - A kind of preparation method of ultra-fine coating calcium carbonate slurry - Google Patents
A kind of preparation method of ultra-fine coating calcium carbonate slurry Download PDFInfo
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- CN106957538A CN106957538A CN201710247504.7A CN201710247504A CN106957538A CN 106957538 A CN106957538 A CN 106957538A CN 201710247504 A CN201710247504 A CN 201710247504A CN 106957538 A CN106957538 A CN 106957538A
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- slurry
- calcium carbonate
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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
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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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
- C09C3/10—Treatment with macromolecular organic compounds
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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)
- Paper (AREA)
Abstract
A kind of preparation method of ultra-fine coating calcium carbonate slurry, it is characterised in that：First by heavy calcium carbonate slurrying, Ultrafine Grinding is carried out, is ground to and is wherein less than 2 μm of contents 80~90%.It is 10% that heavy calcium carbonate slurry is diluted into weight content, then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, collect little particle slurry, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, ammonium carbonate is added into little particle slurry, ammonium carbonate addition is the 1.0% of ground whiting dry powder weight, after stirring, filtered in feeding filter, collect filter cake, filter cake is disperseed with sodium polyacrylate disperant, and sodium polyacrylate disperant addition is the 1.0% of ground whiting dry powder weight, obtains ultra-fine coating calcium carbonate slurry.
Description
Technical field
The present invention relates to a kind of preparation method of ultra-fine coating calcium carbonate slurry.
Background technology
Filler is added in papermaking can improve opacity and the brightness of paper, improve the smoothness and uniform shape of paper
State, increases the flexibility of paper, the hygroscopicity and deformation extent of paper is reduced, while also helping reduction production cost.Titanium white
Powder has high index of refraction and scattering coefficient, is good papermaking filler, but because its is expensive, is normally only used for high-grade thin page
Printing paper, to improve the opacity of paper；And calcium carbonate is cheap due to its, and it can equally improve the opaque of paper
The oil suction performance of ink of degree, increase paper, has certain cost advantage as papermaking filler.
As acid papermaking changes to Neutral Papermaking, calcium carbonate is increasingly becoming China paper industry and improves paper quality, drop
The important raw and processed materials of low papermaking cost.Coarse whiting has larger difference with application effect of the fine particle calcium carbonate in paper：Fine particle calcium carbonate and coarse whiting institute
Copy paper sample whiteness is more or less the same, and both whiteness are higher；But in terms of opacity, the opacity of fine particle calcium carbonate institute copy paper sample compared with
Height, the opacity of page can be improved after adding fine particle calcium carbonate.With its bulk of fine particle calcium carbonate institute copy paper sample apparently higher than coarse whiting；Fine particle calcium carbonate
Average grain diameter is small compared with coarse whiting, correspondingly with bigger specific surface area, and the suction-operated to AKD sizing agents is stronger than coarse whiting, thus
The amount ratio coarse whiting of AKD sizing agents is big.In identical amount of filler, fine particle calcium carbonate is higher than the ash content of coarse whiting, mainly due to coarse whiting
Particle diameter is small, in page drainage and formation, and fiber retains poor to fine particle；Although and the particle diameter of fine particle calcium carbonate also very little, fine particle calcium carbonate holds
Larger particle is easily agglomerated into, there is good bridging action to paper fibre, therefore fine particle calcium carbonate is better than coarse whiting in terms of ash content reservation；This
Outside, powdered whiting particle diameter is small and is in mostly cube like structure, for relative lightweight calcium carbonate, to the abrasion of net than light
Matter calcium carbonate is serious.But the stability of the pH value of powdered whiting is higher than precipitated calcium carbonate；Powdered whiting is cheap, processing
During energy resource consumption it is low, and precipitated calcium carbonate price is high, and energy resource consumption is big in process, is consumed in production process substantial amounts of
Anthracite.So powdered whiting and application of the precipitated calcium carbonate in papermaking respectively have an advantage and disadvantage, how by the advantage knot of the two
It is the key solved the problems, such as to be combined.
Pigment particles of the coated with precipitated calcium carbonate of Chinese patent CN 1217007 and preparation method thereof, are described kaolinite
Slurry is made of water for soil, natural whiting or titanium dioxide, and then the pH value of slurry is transferred to 6-11, and particle is added into slurry
Particle diameter is 30-100nm light calcium carbonate slurry, precipitated calcium carbonate particle is coated in kaolin, natural magnesium by absorption
Calcium or titanium dioxide surface, obtain coated with precipitated calcium carbonate pigment, can be used for papermaking filler and papermaking pigments.Chinese patent CN
1335874 new type of paper fillers or pigment or mineral matter through processing, the particularly pigment containing natural whiting, its manufacturer
Method and combinations thereof and application, describe marble, calcite, chalk or carbonate containing dolomite being prepared into aqueous suspension
Liquid, sulfuric acid, hydrochloric acid, phosphoric acid or oxalic acid are added into water slurry, carbon dioxide is then passed through into water slurry, is contained
The pigment of natural whiting, this pigment can reduce the paper weight of constant surface area.
The innovative point of the present invention is that the weight content of heavy calcium carbonate slurry is 50% first by heavy calcium carbonate slurrying,
Then Ultrafine Grinding is carried out to powdered whiting using the ultra-fine machine for cutting charge into pieces of wet type, heavy calcium carbonate slurry is made, wherein containing less than 2 μm
Amount 80~90%.For the ease of isolating bulky grain, weight content is diluted to weight content for 50% heavy calcium carbonate slurry
For 10%, then slurry is sent into classification processing is carried out in horizontal screw unloading centrifugal classifying, passes through and adjusts control overflow baffle
Highly, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and ammonium carbonate is added into little particle slurry, and ammonium carbonate addition is heavy
The 1.0% of calcium carbonate dry powder weight, after stirring, is filtered in feeding filter, collects filter cake, filter cake polyacrylic acid
Sodium dispersant is disperseed, and sodium polyacrylate disperant addition is the 1.0% of ground whiting dry powder weight, obtains ultra-fine painting
Cloth calcium carbonate slurry.
The content of the invention
To achieve these goals, technology of the invention is realized in：A kind of preparation of ultra-fine coating calcium carbonate slurry
Method, it is characterised in that：First by heavy calcium carbonate slurrying, heavy calcium carbonate is added to the water, and addition is poly- into water
PAA dispersant, sodium polyacrylate disperant addition is the 1.0% of ground whiting dry powder weight, stirs and is made into
Heavy calcium carbonate slurry, the weight content of heavy calcium carbonate slurry is 50%, then using the ultra-fine machine for cutting charge into pieces of wet type to heavy carbonic acid
Calcium carries out Ultrafine Grinding, heavy calcium carbonate slurry is made, wherein less than 2 μm contents 80~90%.By the heavy that weight content is 50%
It is 10% that calcium carbonate slurry, which is diluted to weight content, then sends into horizontal screw unloading centrifugal classifying slurry and is classified
Processing, by adjusting control overflow baffle height, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, little particle discharging
Volume flow is 95%, collects little particle slurry, and bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and is added into little particle slurry
Enter ammonium carbonate, ammonium carbonate addition is the 1.0% of ground whiting dry powder weight, after stirring, carried out in feeding filter
Filter, collects filter cake, and filter cake is disperseed with sodium polyacrylate disperant, and sodium polyacrylate disperant addition is powdered whiting
The 1.0% of dry powder weight, obtains ultra-fine coating calcium carbonate slurry；
Described heavy calcium carbonate is 100~600 mesh.
Embodiment：
Embodiment 1
4 ton of 100 mesh heavy calcium carbonate is added in 4 tons of deionized waters, slurry is made in stirring, and adds into slurry 40kg
Sodium polyacrylate disperant, is sufficiently stirred for, and slurry is obtained good mobility.Then with pump by slurry send into three series connection
300 liters of machine for cutting charge into pieces, are ground with machine for cutting charge into pieces to powdered whiting, heavy calcium carbonate slurry are made, wherein less than 2 μm contents
80%.Then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, it is high by adjusting control overflow baffle
Degree, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and 40kg ammonium carbonates are added into little particle slurry, after stirring, are sent
Enter in plate and frame filter press and filtered, filter cake is disperseed with 40kg sodium polyacrylate disperants, obtain solid content for 78% it is super
Thin 5.1 tons of calcium carbonate slurry of coating.
Embodiment 2
4 ton of 100 mesh heavy calcium carbonate is added in 4 tons of deionized waters, slurry is made in stirring, and adds into slurry 40kg
Sodium polyacrylate disperant, is sufficiently stirred for, and slurry is obtained good mobility.Then with pump by slurry send into three series connection
300 liters of machine for cutting charge into pieces, are ground with machine for cutting charge into pieces to powdered whiting, heavy calcium carbonate slurry are made, wherein less than 2 μm contents
90%.Then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, it is high by adjusting control overflow baffle
Degree, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and 40kg ammonium carbonates are added into little particle slurry, after stirring, are sent
Enter in plate and frame filter press and filtered, filter cake is disperseed with 40kg sodium polyacrylate disperants, obtain solid content for 75% it is super
Thin 5.3 tons of calcium carbonate slurry of coating.
Embodiment 3
4 ton of 100 mesh heavy calcium carbonate is added in 4 tons of deionized waters, slurry is made in stirring, and adds into slurry 40kg
Sodium polyacrylate disperant, is sufficiently stirred for, and slurry is obtained good mobility.Then with pump by slurry send into three series connection
300 liters of machine for cutting charge into pieces, are ground with machine for cutting charge into pieces to powdered whiting, heavy calcium carbonate slurry are made, wherein less than 2 μm contents
85%.Then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, it is high by adjusting control overflow baffle
Degree, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and 40kg ammonium carbonates are added into little particle slurry, after stirring, are sent
Enter in plate and frame filter press and filtered, filter cake is disperseed with 40kg sodium polyacrylate disperants, obtain solid content for 76% it is super
Thin 5.2 tons of calcium carbonate slurry of coating.
Embodiment 4
4 ton of 100 mesh heavy calcium carbonate is added in 4 tons of deionized waters, slurry is made in stirring, and adds into slurry 40kg
Sodium polyacrylate disperant, is sufficiently stirred for, and slurry is obtained good mobility.Then with pump by slurry send into three series connection
300 liters of machine for cutting charge into pieces, are ground with machine for cutting charge into pieces to powdered whiting, heavy calcium carbonate slurry are made, wherein less than 2 μm contents
88%.Then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, it is high by adjusting control overflow baffle
Degree, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and 40kg ammonium carbonates are added into little particle slurry, after stirring, are sent
Enter in plate and frame filter press and filtered, filter cake is disperseed with 40kg sodium polyacrylate disperants, obtain solid content for 80% it is super
Thin 5.0 tons of calcium carbonate slurry of coating.
Embodiment 5
4 ton of 100 mesh heavy calcium carbonate is added in 4 tons of deionized waters, slurry is made in stirring, and adds into slurry 40kg
Sodium polyacrylate disperant, is sufficiently stirred for, and slurry is obtained good mobility.Then with pump by slurry send into three series connection
300 liters of machine for cutting charge into pieces, are ground with machine for cutting charge into pieces to powdered whiting, heavy calcium carbonate slurry are made, wherein less than 2 μm contents
83%.Then slurry is sent into and classification processing is carried out in horizontal screw unloading centrifugal classifying, it is high by adjusting control overflow baffle
Degree, rotating speed and speed difference, it is 5% to make bulky grain discharging volume flow, and little particle discharging volume flow is 95%, collects little particle and starches
Material, bulky grain slurry, which is back to machine for cutting charge into pieces, to be continued to grind, and 40kg ammonium carbonates are added into little particle slurry, after stirring, are sent
Enter in plate and frame filter press and filtered, filter cake is disperseed with 40kg sodium polyacrylate disperants, obtain solid content for 79% it is super
Thin 5.1 tons of calcium carbonate slurry of coating.
Claims (1)
1. a kind of preparation method of ultra-fine coating calcium carbonate slurry, it is characterised in that：First by heavy calcium carbonate slurrying, by heavy
Paris white is added to the water, and adds sodium polyacrylate disperant into water, and sodium polyacrylate disperant addition is heavy carbon
The 1.0% of sour calcium dry powder weight, stirs and is made into heavy calcium carbonate slurry, and the weight content of heavy calcium carbonate slurry is 50%,
Then Ultrafine Grinding is carried out to powdered whiting using the ultra-fine machine for cutting charge into pieces of wet type, heavy calcium carbonate slurry is made, wherein containing less than 2 μm
Amount 80~90%；It is 10% that the heavy calcium carbonate slurry for being 50% by weight content, which is diluted to weight content, is then sent into slurry sleeping
Classification processing is carried out in formula screw unloading centrifugal classifying, by adjusting control overflow baffle height, rotating speed and speed difference, makes big
Grain discharging volume flow is 5%, and little particle discharging volume flow is 95%, collects little particle slurry, bulky grain slurry is back to stripping
Piece machine continues to grind, and ammonium carbonate is added into little particle slurry, and ammonium carbonate addition is the 1.0% of ground whiting dry powder weight,
After stirring, filtered in feeding filter, collect filter cake, filter cake is disperseed with sodium polyacrylate disperant, poly- third
Olefin(e) acid sodium dispersant addition is the 1.0% of ground whiting dry powder weight, obtains ultra-fine coating calcium carbonate slurry；
Described heavy calcium carbonate is 100~600 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710247504.7A CN106957538A (en) | 2017-04-17 | 2017-04-17 | A kind of preparation method of ultra-fine coating calcium carbonate slurry |
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| CN201710247504.7A CN106957538A (en) | 2017-04-17 | 2017-04-17 | A kind of preparation method of ultra-fine coating calcium carbonate slurry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902685A (en) * | 2017-11-20 | 2018-04-13 | 广西河池华泰新材料科技有限公司 | A kind of no grinding aid wet-milling, slurry grading system for superfine heavy calcium carbonate technique |
| CN112127211A (en) * | 2020-09-27 | 2020-12-25 | 山西宇皓环保纸业有限公司 | Stone paper, calcium carbonate slurry and preparation method thereof |
| CN112574598A (en) * | 2021-01-25 | 2021-03-30 | 广西华纳新材料科技有限公司 | Method for increasing specific surface area of heavy calcium carbonate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216002A2 (en) * | 1985-05-17 | 1987-04-01 | Georgia Kaolin Company, Inc. | Process for beneficiating natural calcite ores |
| CN101550290A (en) * | 2009-05-04 | 2009-10-07 | 广福建材（蕉岭）精化有限公司 | Production method of modified superfine dolomite dust |
| CN101875793A (en) * | 2010-05-20 | 2010-11-03 | 建德市兴隆钙粉有限公司 | Production method for superfine modified heavy calcium carbonate by wet grinding |
| 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 |
| CN104845411A (en) * | 2015-05-29 | 2015-08-19 | 四川石棉巨丰粉体有限公司 | Superfine ground calcium carbonate powder production method |
-
2017
- 2017-04-17 CN CN201710247504.7A patent/CN106957538A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216002A2 (en) * | 1985-05-17 | 1987-04-01 | Georgia Kaolin Company, Inc. | Process for beneficiating natural calcite ores |
| CN101550290A (en) * | 2009-05-04 | 2009-10-07 | 广福建材（蕉岭）精化有限公司 | Production method of modified superfine dolomite dust |
| CN101875793A (en) * | 2010-05-20 | 2010-11-03 | 建德市兴隆钙粉有限公司 | Production method for superfine modified heavy calcium carbonate by wet grinding |
| 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 |
| CN104845411A (en) * | 2015-05-29 | 2015-08-19 | 四川石棉巨丰粉体有限公司 | Superfine ground calcium carbonate powder production method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902685A (en) * | 2017-11-20 | 2018-04-13 | 广西河池华泰新材料科技有限公司 | A kind of no grinding aid wet-milling, slurry grading system for superfine heavy calcium carbonate technique |
| CN107902685B (en) * | 2017-11-20 | 2019-01-15 | 广西河池华泰新材料科技有限公司 | A kind of no grinding aid wet-milling, slurry grading system for superfine heavy calcium carbonate technique |
| CN112127211A (en) * | 2020-09-27 | 2020-12-25 | 山西宇皓环保纸业有限公司 | Stone paper, calcium carbonate slurry and preparation method thereof |
| CN112574598A (en) * | 2021-01-25 | 2021-03-30 | 广西华纳新材料科技有限公司 | Method for increasing specific surface area of heavy calcium carbonate |
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Application publication date: 20170718 |
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