CA2438039A1 - Procede de blanchiment reducteur de carbonates de metal alcalino-terreux - Google Patents

Procede de blanchiment reducteur de carbonates de metal alcalino-terreux Download PDF

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Publication number
CA2438039A1
CA2438039A1 CA002438039A CA2438039A CA2438039A1 CA 2438039 A1 CA2438039 A1 CA 2438039A1 CA 002438039 A CA002438039 A CA 002438039A CA 2438039 A CA2438039 A CA 2438039A CA 2438039 A1 CA2438039 A1 CA 2438039A1
Authority
CA
Canada
Prior art keywords
calcium carbonate
earth metal
alkaline earth
aqueous slurry
weight
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.)
Abandoned
Application number
CA002438039A
Other languages
English (en)
Inventor
Christopher R.L. Golley
Deborah Susan Thrale
Desmond Charles Payton
Florangel D. Perez
Mark Windebank
Mark Daniel Mortimer
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
Individual
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 Individual filed Critical Individual
Publication of CA2438039A1 publication Critical patent/CA2438039A1/fr
Abandoned 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
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/60—Preparation of carbonates or bicarbonates in general
    • 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
    • C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
    • C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
    • 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
    • C01F5/00—Compounds of magnesium
    • C01F5/24—Magnesium 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
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé permettant d'améliorer la brillance d'un carbonate de métal alcalino-terreux au moyen d'acide sulfinique de formamidine ou de dithionite de sodium comme agent de blanchiment réducteur. Si le carbonate de métal alcalino-terreux est un carbonate de calcium, on ajoute l'agent de blanchiment réducteur à une suspension aqueuse de carbonate de calcium avant, pendant ou après la formation du carbonate, choisi parmi au moins un carbonate de calcium précipité et un carbonate de calcium naturel.
CA002438039A 2001-02-13 2002-02-13 Procede de blanchiment reducteur de carbonates de metal alcalino-terreux Abandoned CA2438039A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0103500.5A GB0103500D0 (en) 2001-02-13 2001-02-13 Calcium carbonate products
GB0103500.5 2001-02-13
PCT/US2002/004168 WO2002064505A1 (fr) 2001-02-13 2002-02-13 Procede de blanchiment reducteur de carbonates de metal alcalino-terreux

Publications (1)

Publication Number Publication Date
CA2438039A1 true CA2438039A1 (fr) 2002-08-22

Family

ID=9908627

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002438039A Abandoned CA2438039A1 (fr) 2001-02-13 2002-02-13 Procede de blanchiment reducteur de carbonates de metal alcalino-terreux

Country Status (4)

Country Link
EP (1) EP1365993A1 (fr)
CA (1) CA2438039A1 (fr)
GB (1) GB0103500D0 (fr)
WO (1) WO2002064505A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10211292A1 (de) * 2002-03-14 2003-09-25 Basf Ag Verfahren zur Herstellung von gefälltem Calciumcarbonat mit hohem Weißgrad
US10590003B1 (en) 2017-08-24 2020-03-17 Mississippi Lime Company Method of brightening ground calcium carbonate
CN111017944A (zh) * 2019-12-31 2020-04-17 濮阳宏业环保新材料股份有限公司 一种水磨高岭土研磨漂白工艺

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520850A (en) 1944-02-12 1950-08-29 Minnick Leonard John Process of whitening alkaline earth carbonates
US4900533A (en) * 1981-02-24 1990-02-13 English Clays Lovering Pochin & Company Alkaline earth metal carbonates
JPS58151326A (ja) * 1982-02-25 1983-09-08 イングリツシユ・クレイズ・ラヴア−リング・ポチン・アンド・コムパニ−・リミテツド アルカリ土類金属炭酸塩に関する改良法
US4824653A (en) * 1988-09-29 1989-04-25 Franklin Industries, Inc. Method of bleaching limestone
JP3223589B2 (ja) * 1992-07-20 2001-10-29 王子製紙株式会社 軽質炭酸カルシウムの製造方法
DE19530062C2 (de) 1995-08-16 1998-10-15 Dorfner Gmbh & Co Kaolin Und K Verfahren zur Herstellung aufgehellter Mineralien
CA2237960A1 (fr) * 1997-06-18 1998-12-18 Goldcorp Inc. Production de carbonate de calcium precipite a couleur amelioree, sous forme cristallisee stable
DE19743759A1 (de) 1997-10-02 1999-04-08 Brueggemann L Kg Sulfinsäurederivate und deren Herstellung und Verwendung

Also Published As

Publication number Publication date
WO2002064505A1 (fr) 2002-08-22
GB0103500D0 (en) 2001-03-28
EP1365993A1 (fr) 2003-12-03

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead