GB1285891A - Improvements in or relating to the treatment of minerals - Google Patents

Improvements in or relating to the treatment of minerals

Info

Publication number
GB1285891A
GB1285891A GB4879868A GB4879868A GB1285891A GB 1285891 A GB1285891 A GB 1285891A GB 4879868 A GB4879868 A GB 4879868A GB 4879868 A GB4879868 A GB 4879868A GB 1285891 A GB1285891 A GB 1285891A
Authority
GB
United Kingdom
Prior art keywords
ozone
carbonate
oct
earth metal
alkaline earth
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.)
Expired
Application number
GB4879868A
Inventor
Peter James Malden
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.)
Imerys Minerals Ltd
Original Assignee
English Clays Lovering Pochin Co Ltd
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
Application filed by English Clays Lovering Pochin Co Ltd filed Critical English Clays Lovering Pochin Co Ltd
Priority to GB4879868A priority Critical patent/GB1285891A/en
Priority to DE19691951742 priority patent/DE1951742C3/en
Priority to BE740336D priority patent/BE740336A/xx
Priority to SE1414469A priority patent/SE353515B/xx
Priority to FR6935371A priority patent/FR2020771A7/fr
Publication of GB1285891A publication Critical patent/GB1285891A/en
Expired 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
    • 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
    • C09C1/022—Treatment with inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—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
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Detergent Compositions (AREA)

Abstract

1285891 Bleaching alkaline earth metal carbonates ENGLISH CLAYS LOVERING POCHIN & CO Ltd 9 Oct 1969 [15 Oct 1968] 48798/68 Heading C1A An alkaline earth metal carbonate is bleached by contacting with a gas comprising ozone at below 20‹ C. The carbonate may be ground, either before or during contact with the ozone, so that at least 60% of the particles by weight are smaller than 2 microns equivalent spherical diameter. The carbonate may be in the form of an aqueous suspension, preferably containing a dispersing agent, which may be a salt of a polyacrylic or a polymethacrylic acid. The gas comprising ozone may be ozonized air or oxygen containing from 0À1 to 15% ozone by weight. The required bleaching can usually be achieved by contact for from 1 minute to 5 hours. Starting materials referred to are limestone, chalk whiting, dolomite, strontianite and witherite.
GB4879868A 1968-10-15 1968-10-15 Improvements in or relating to the treatment of minerals Expired GB1285891A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4879868A GB1285891A (en) 1968-10-15 1968-10-15 Improvements in or relating to the treatment of minerals
DE19691951742 DE1951742C3 (en) 1968-10-15 1969-10-14 Process for bleaching alkaline earth carbonates
BE740336D BE740336A (en) 1968-10-15 1969-10-15
SE1414469A SE353515B (en) 1968-10-15 1969-10-15
FR6935371A FR2020771A7 (en) 1968-10-15 1969-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4879868A GB1285891A (en) 1968-10-15 1968-10-15 Improvements in or relating to the treatment of minerals

Publications (1)

Publication Number Publication Date
GB1285891A true GB1285891A (en) 1972-08-16

Family

ID=10449934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4879868A Expired GB1285891A (en) 1968-10-15 1968-10-15 Improvements in or relating to the treatment of minerals

Country Status (5)

Country Link
BE (1) BE740336A (en)
DE (1) DE1951742C3 (en)
FR (1) FR2020771A7 (en)
GB (1) GB1285891A (en)
SE (1) SE353515B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242318A (en) * 1977-07-11 1980-12-30 Solvay & Cie. Process for the preparation of aqueous suspensions containing at least 65% by weight of calcium carbonate
US4572825A (en) * 1981-06-04 1986-02-25 Peroxide-Chemie Gmbh Process for bleaching natural chalk
US4793985A (en) * 1982-08-23 1988-12-27 J. M. Huber Corporation Method of producing ultrafine ground calcium carbonate
US4824653A (en) * 1988-09-29 1989-04-25 Franklin Industries, Inc. Method of bleaching limestone
RU2757876C1 (en) * 2019-12-16 2021-10-22 Публичное акционерное общество "Саратовский электроприборостроительный завод имени Серго Орджоникидзе" Method for production of chemically deposited chalk

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570721B1 (en) * 1984-09-25 1988-01-08 Condat Papeteries PROCESS FOR ENHANCING LIME SLUDGE IN THE CAUSTIFICATION CYCLE OF THE KRAFT PROCESS
EP1149802A1 (en) * 2000-04-28 2001-10-31 AZIENDE CHIMICHE RIUNITE ANGELINI FRANCESCO - A.C.R.A.F. - S.p.A. Calcium carbonate substantially free of ammonium ions and process for the preparation thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242318A (en) * 1977-07-11 1980-12-30 Solvay & Cie. Process for the preparation of aqueous suspensions containing at least 65% by weight of calcium carbonate
US4572825A (en) * 1981-06-04 1986-02-25 Peroxide-Chemie Gmbh Process for bleaching natural chalk
US4793985A (en) * 1982-08-23 1988-12-27 J. M. Huber Corporation Method of producing ultrafine ground calcium carbonate
US4824653A (en) * 1988-09-29 1989-04-25 Franklin Industries, Inc. Method of bleaching limestone
RU2757876C1 (en) * 2019-12-16 2021-10-22 Публичное акционерное общество "Саратовский электроприборостроительный завод имени Серго Орджоникидзе" Method for production of chemically deposited chalk

Also Published As

Publication number Publication date
FR2020771A7 (en) 1970-07-17
DE1951742A1 (en) 1970-04-30
DE1951742C3 (en) 1981-01-29
DE1951742B2 (en) 1980-05-14
SE353515B (en) 1973-02-05
BE740336A (en) 1970-03-16

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
PS Patent sealed
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
PS Patent sealed
PE20 Patent expired after termination of 20 years