FR2292747A2 - Finely-divided calcium carbonate pigment - which is spray dried to obtain high apparent density and fine particle size - Google Patents

Finely-divided calcium carbonate pigment - which is spray dried to obtain high apparent density and fine particle size

Info

Publication number
FR2292747A2
FR2292747A2 FR7536131A FR7536131A FR2292747A2 FR 2292747 A2 FR2292747 A2 FR 2292747A2 FR 7536131 A FR7536131 A FR 7536131A FR 7536131 A FR7536131 A FR 7536131A FR 2292747 A2 FR2292747 A2 FR 2292747A2
Authority
FR
France
Prior art keywords
calcium carbonate
finely
particle size
caco3
apparent density
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
Application number
FR7536131A
Other languages
French (fr)
Other versions
FR2292747B2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEWERK VICTOR CHEM WERKE
Original Assignee
GEWERK VICTOR CHEM WERKE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2346269A external-priority patent/DE2346269C3/en
Priority claimed from DE2456463A external-priority patent/DE2456463C2/en
Application filed by GEWERK VICTOR CHEM WERKE filed Critical GEWERK VICTOR CHEM WERKE
Publication of FR2292747A2 publication Critical patent/FR2292747A2/en
Application granted granted Critical
Publication of FR2292747B2 publication Critical patent/FR2292747B2/fr
Granted legal-status Critical Current

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
    • C01F11/185—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
    • C09C1/021—Calcium carbonates
    • 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
    • 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
    • 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
    • C09C3/043—Drying, calcination
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/002—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/017—Mixtures of compounds
    • 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
    • C01P2004/02—Particle morphology depicted by an image obtained by optical microscopy
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density

Abstract

In the parent patent finely-divided dispersions of calcium carbonate are prepd. by homogenisation of coarse CaCO3 or coarse pptd. CaCO3, in a suspension contg. 15-25% water and a dispersant, followed by wet milling. In the addition, in order to obtain extremely fine calcium carbonate with a high density and which is easily dispersible, the dispersion is transformed by drying into a less fluid product. The drying is pref. applied to a dispersion contg. 60-80 wt.% calcium carbonate which includes 0.2-1.0% dispersant w.r.t. the dry wt. of CaCO3, and a spray dryer is pref. employed. Process is used e.g. in mfg. white pigments for the paper industry or dispersion paints. A high apparent density of 0.8-1 kg/l can be obtd. as compared with the low value of 0.25-0.3 kg/l obtd. by conventional processes starting from a raw material with the same particle size.
FR7536131A 1973-09-14 1975-11-26 Finely-divided calcium carbonate pigment - which is spray dried to obtain high apparent density and fine particle size Granted FR2292747A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2346269A DE2346269C3 (en) 1973-09-14 1973-09-14 Process for the production of finely divided calcium carbonate dispersions
DE2456463A DE2456463C2 (en) 1974-11-29 1974-11-29 Process for the production of a free-flowing calcium carbonate

Publications (2)

Publication Number Publication Date
FR2292747A2 true FR2292747A2 (en) 1976-06-25
FR2292747B2 FR2292747B2 (en) 1979-09-21

Family

ID=25765791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536131A Granted FR2292747A2 (en) 1973-09-14 1975-11-26 Finely-divided calcium carbonate pigment - which is spray dried to obtain high apparent density and fine particle size

Country Status (2)

Country Link
FR (1) FR2292747A2 (en)
NL (1) NL7513931A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386868A1 (en) * 1989-01-17 1990-09-12 Minerals Technologies Inc. Low-density calcium carbonate agglomerate
WO1995034291A1 (en) * 1994-06-15 1995-12-21 Dumex-Alpharma A/S Pellets

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386868A1 (en) * 1989-01-17 1990-09-12 Minerals Technologies Inc. Low-density calcium carbonate agglomerate
JPH02271912A (en) * 1989-01-17 1990-11-06 Pfizer Inc Aggregate containing low density calcium carbonate and production thereof
AU658648B2 (en) * 1989-01-17 1995-04-27 Minerals Technologies Inc. Low density agglomerate
JPH0829937B2 (en) * 1989-01-17 1996-03-27 ミネラルズ テクノロジーズ インコーポレイテッド Low-density calcium carbonate-containing aggregate and method for producing the same
WO1995034291A1 (en) * 1994-06-15 1995-12-21 Dumex-Alpharma A/S Pellets

Also Published As

Publication number Publication date
NL7513931A (en) 1976-06-01
FR2292747B2 (en) 1979-09-21

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