DK2447213T3 - Fremstilling af præcipiteret calciumkarbonat med høj renhed - Google Patents
Fremstilling af præcipiteret calciumkarbonat med høj renhed Download PDFInfo
- Publication number
- DK2447213T3 DK2447213T3 DK10188840.2T DK10188840T DK2447213T3 DK 2447213 T3 DK2447213 T3 DK 2447213T3 DK 10188840 T DK10188840 T DK 10188840T DK 2447213 T3 DK2447213 T3 DK 2447213T3
- Authority
- DK
- Denmark
- Prior art keywords
- calcium carbonate
- process according
- precipitated calcium
- chloride solution
- weight
- Prior art date
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Classifications
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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
-
- 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
- C01F11/185—After-treatment, e.g. grinding, purification, conversion of crystal morphology
-
- 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
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- 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
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- 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
- C01P2006/12—Surface area
-
- 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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
Claims (13)
1. Fremgangsmåde til fremstilling af præcipiteret calciumkarbonat omfattende trinnene at: a) tilvejebringe og kalcinere calciumkarbonat-omfattende materiale; b) læske reaktionsproduktet opnået fra trin a) med en vandig ammoniumklorid-opløsning; c) separere uopløselige bestanddele fra calciumklorid-opløsningen opnået fra trin b); d) karbonisere calciumklorid-opløsningen opnået fra trin c); e) separere det præcipiterede calciumkarbonat opnået fra trin d), kendetegnet ved at kimkrystaller tilføjes til calciumklorid-opløsningen opnået fra trin c) før trin d).
2. Fremgangsmåden ifølge krav 1, kendetegnet ved at det calciumkarbonat-omfattende materiale af trin a) vælges fra gruppen omfattende præcipiteret calciumkarbonat; naturlige calciumkarbonatmineraler såsom marmor, kalksten og kridt, og blandet alkali jordkarbonatmineraler omfattende calciumkarbonat såsom dolomit.
3. Fremgangsmåden ifølge et hvilket som helst af kravene 1 eller 2, kendetegnet ved at det rå calciumkarbonatmateriale af trin a) har et minimum calciumkarbonatindhold på mindst 15 vægtprocent, mere fortrinsvis på mindst 50 vægtprocent, især på mindst 75 vægtprocent, og mest fortrinsvis på mindst 90 vægtprocent, f.eks. 98 vægtprocent baseret på den samlede vægt af det tilførte materiale.
4. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 3, kendetegnet ved at molforholdet mellem ammoniumklorid og calciumoxid er fra 1 : 1 til 8 : 1, mere fortrinsvis fra 1,5 : 1 til 4 : 1, f.eks. fra 2 : 1 til 3 : 1.
5. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 4, kendetegnet ved at, i trin c), adskillelse af uopløselige bestanddele udføres ved screening, bundfældning og dekantering, og/eller filtrering.
6. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 5, kendetegnet ved at, i trin c), de uopløselige bestanddele kan flokkuleres før de fjernes, ved tilføjelse af højmolekylære flokkulanter, hvor kationiske, anioniske flokkulanter, og/eller non-ion flokkulanter, fortrinsvis copolymerer baseret på polyakrylsyre kan anvendes.
7. Fremgangsmåden ifølge krav 6, kendetegnet ved at, i trin c), flokkulanten tilføjes i en mængde fra 1 til 50 ppm, fortrinsvis fra 2 til 40 ppm, mere fortrinsvis fra 3 til 25 ppm, og mest fortrinsvis fra 5 til 15 ppm, baseret på tørt CaO.
8. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 7, kendetegnet ved at, i trin d), karboniseringen udføres ved at føre ren gasformig kuldioxid eller tekniske gasser indeholdende mindst 10 vol.-% af kuldioxid til alkali calciumklorid-opløsningen.
9. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 8, kendetegnet ved at, i trin e), præcipiteret calciumkarbonat opnået fra trin d) separeres fra moderluden ved filtrering.
10. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 9, kendetegnet ved at, efter trin e), det præcipiterede calciumkarbonat vaskes med vand.
11. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 10, kendetegnet ved at, efter trin e), det præcipiterede calciumkarbonat opkoncentreres eller tørres.
12. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 11, kendetegnet ved at den udføres som lukket proces, hvor reaktanterne genbruges.
13. Fremgangsmåden ifølge et hvilket som helst af kravene 1 til 12, kendetegnet ved at den udføres som batches eller som en kontinuerlig proces.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20100188840 EP2447213B1 (en) | 2010-10-26 | 2010-10-26 | Production of high purity precipitated calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK2447213T3 true DK2447213T3 (da) | 2015-07-27 |
Family
ID=43498637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK10188840.2T DK2447213T3 (da) | 2010-10-26 | 2010-10-26 | Fremstilling af præcipiteret calciumkarbonat med høj renhed |
Country Status (23)
| Country | Link |
|---|---|
| US (2) | US8992875B2 (da) |
| EP (2) | EP2447213B1 (da) |
| JP (1) | JP5961617B2 (da) |
| KR (1) | KR101759765B1 (da) |
| CN (1) | CN103189315A (da) |
| AR (1) | AR083549A1 (da) |
| BR (1) | BR112013009985A2 (da) |
| CA (1) | CA2814435C (da) |
| CL (1) | CL2013001130A1 (da) |
| CO (1) | CO6680730A2 (da) |
| DK (1) | DK2447213T3 (da) |
| ES (1) | ES2540248T3 (da) |
| HR (1) | HRP20150757T1 (da) |
| JO (1) | JO3218B1 (da) |
| MX (1) | MX346118B (da) |
| PL (1) | PL2447213T3 (da) |
| PT (1) | PT2447213E (da) |
| RS (1) | RS54078B1 (da) |
| RU (1) | RU2602140C2 (da) |
| SI (1) | SI2447213T1 (da) |
| TW (1) | TWI545085B (da) |
| UY (1) | UY33682A (da) |
| WO (1) | WO2012055750A1 (da) |
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