BR9813975A - Processo de fabricação de carbonato de cálcio - Google Patents

Processo de fabricação de carbonato de cálcio

Info

Publication number
BR9813975A
BR9813975A BR9813975-4A BR9813975A BR9813975A BR 9813975 A BR9813975 A BR 9813975A BR 9813975 A BR9813975 A BR 9813975A BR 9813975 A BR9813975 A BR 9813975A
Authority
BR
Brazil
Prior art keywords
calcium carbonate
calcium
manufacturing process
carbonate
carbonate manufacturing
Prior art date
Application number
BR9813975-4A
Other languages
English (en)
Inventor
Henri Rene Langelin
Alain Laudet
Original Assignee
Lhoist Rech Et Dev In Short L
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 Lhoist Rech Et Dev In Short L filed Critical Lhoist Rech Et Dev In Short L
Publication of BR9813975A publication Critical patent/BR9813975A/pt

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
    • C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • 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
    • C01P2006/80—Compositional purity

Landscapes

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

Abstract

Patente de Invenção: <B>"PROCESSO DE FABRICAçãO DE CARBONATO DE CáLCIO"<D>. A invenção refere-se a um processo de fabricação de partículas de carbonato de cálcio e/ou de carbonato de cálcio e de magnésio, que consiste em tratar um meio aquoso de pH básico e contendo Ca(OH)~ 2~ e/ou Ca(OH)~ 2~-Mg(OH)~ 2~, injetando-se no mesmo CO~ 2~ gasoso para formar carbonato de cálcio e/ou carbonato de cálcio e de magnésio, e recuperando-se as partículas de carbonato formadas. A invenção é caracterizada pelo fato de que o tratamento do meio aquoso é realizado na presença de pelo menos um aditivo selecionado do grupo que consiste em hidrazina, hidroxilamina, sais solúveis de hidroxilamina, e suas misturas.
BR9813975-4A 1997-11-06 1998-11-06 Processo de fabricação de carbonato de cálcio BR9813975A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9700894A BE1011538A4 (fr) 1997-11-06 1997-11-06 Procede de fabrication de carbonate de calcium.
PCT/BE1998/000171 WO1999024361A1 (fr) 1997-11-06 1998-11-06 Procede de fabrication de carbonate de calcium

Publications (1)

Publication Number Publication Date
BR9813975A true BR9813975A (pt) 2000-09-26

Family

ID=3890824

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9813975-4A BR9813975A (pt) 1997-11-06 1998-11-06 Processo de fabricação de carbonato de cálcio

Country Status (9)

Country Link
EP (1) EP1028916A1 (pt)
AR (1) AR017571A1 (pt)
AU (1) AU1015099A (pt)
BE (1) BE1011538A4 (pt)
BR (1) BR9813975A (pt)
PL (1) PL340094A1 (pt)
SK (1) SK6292000A3 (pt)
WO (1) WO1999024361A1 (pt)
ZA (1) ZA9810169B (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105139B2 (en) 2002-04-25 2006-09-12 Imerys Pigments, Inc. Stabilization of the viscosity of formamidine sulfinic acid bleached calcium carbonate slurries

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900533A (en) * 1981-02-24 1990-02-13 English Clays Lovering Pochin & Company Alkaline earth metal carbonates
DE3510695A1 (de) * 1985-03-23 1986-09-25 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von feinteiligem calciumcarbonat grosser reinheit und hohem weissgrad
CN85103821A (zh) * 1985-05-13 1986-11-12 陈学廉 增加轻质碳酸钙白度的方法
EP0257458A3 (en) * 1986-08-22 1989-03-29 Akira Matsuzaki Scrubbing agent and process for producing the same
RO105941B1 (ro) * 1990-04-20 1993-01-30 Centrul Chim Timisoara Procedeu de obținere a unui sortiment de carbonat de calciu de puritate ridicata si granulație fina
BE1003441A5 (fr) * 1990-07-24 1992-03-24 Lhoist Rech & Dev Sa Procede de fabrication de derives calciques, derives calciques et uti lisation de tels derives.
CA2090088C (en) * 1992-02-26 1995-07-25 Pierre Marc Fouche Production of purified calcium carbonate
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

Also Published As

Publication number Publication date
WO1999024361A1 (fr) 1999-05-20
SK6292000A3 (en) 2000-12-11
AU1015099A (en) 1999-05-31
BE1011538A4 (fr) 1999-10-05
PL340094A1 (en) 2001-01-15
EP1028916A1 (fr) 2000-08-23
AR017571A1 (es) 2001-09-12
ZA9810169B (en) 1999-05-07

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]