ATE422T1 - PROCESS FOR THE PREPARATION OF AN AQUEOUS SUSPENSION OF CALCIUM OR/AND MAGNESIUM CARBONATES FROM DOLOMITE. - Google Patents

PROCESS FOR THE PREPARATION OF AN AQUEOUS SUSPENSION OF CALCIUM OR/AND MAGNESIUM CARBONATES FROM DOLOMITE.

Info

Publication number
ATE422T1
ATE422T1 AT79103811T AT79103811T ATE422T1 AT E422 T1 ATE422 T1 AT E422T1 AT 79103811 T AT79103811 T AT 79103811T AT 79103811 T AT79103811 T AT 79103811T AT E422 T1 ATE422 T1 AT E422T1
Authority
AT
Austria
Prior art keywords
dolomite
calcium
carbonates
aqueous suspension
magnesium
Prior art date
Application number
AT79103811T
Other languages
German (de)
Inventor
Werner Dr. Schultze
Heinz Kendziora
Johann Nenner
Original Assignee
Vereinigte Aluminium-Werke Aktiengesellschaft
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 Vereinigte Aluminium-Werke Aktiengesellschaft filed Critical Vereinigte Aluminium-Werke Aktiengesellschaft
Application granted granted Critical
Publication of ATE422T1 publication Critical patent/ATE422T1/en

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
    • 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
    • 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
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • 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

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)
  • Paper (AREA)
  • Treating Waste Gases (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

1. A method of producing an aqueous suspension of carbonates of calcium or/and Magnesium from dolomite, wherein the dolomite is converted into a mixture of calcium oxide and magnesium oxide by heating to approx. 1000-1100 degrees C, whereafter the resultant oxide mixture is suspended in water in the proportion by weight of at least 20 parts of water to 1 part of the oxides and wherein the hydroxides which form in the suspension are converted back to the corresponding carbonates by the introduction of carbon dioxide according to DE-A-26 00 485 characterized by that the carbonate-containing suspension is heated to a temperature above 160 degrees C in a pressurized vessel suitable for hydrothermal treatment and maintained at such temperature until lamellar, basic magnesium carbonates of a Shape factor of less than 1 : 30 have formed.
AT79103811T 1978-10-30 1979-10-05 PROCESS FOR THE PREPARATION OF AN AQUEOUS SUSPENSION OF CALCIUM OR/AND MAGNESIUM CARBONATES FROM DOLOMITE. ATE422T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2847205A DE2847205C2 (en) 1978-10-30 1978-10-30 Process for the production of a paper filler and / or coating pigment
EP79103811A EP0010643B1 (en) 1978-10-30 1979-10-05 Process for producing an aquous suspension of calcium and/or magnesium carbonates from dolomite

Publications (1)

Publication Number Publication Date
ATE422T1 true ATE422T1 (en) 1981-12-15

Family

ID=6053490

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79103811T ATE422T1 (en) 1978-10-30 1979-10-05 PROCESS FOR THE PREPARATION OF AN AQUEOUS SUSPENSION OF CALCIUM OR/AND MAGNESIUM CARBONATES FROM DOLOMITE.

Country Status (8)

Country Link
EP (1) EP0010643B1 (en)
JP (1) JPS5560023A (en)
AT (1) ATE422T1 (en)
DE (1) DE2847205C2 (en)
ES (1) ES485481A2 (en)
FI (1) FI64119C (en)
NO (1) NO153170C (en)
PT (1) PT70207A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245103C2 (en) * 1982-12-07 1986-11-13 Rheinische Kalksteinwerke GmbH, 5603 Wülfrath Process for the production of a mixture of calcium and magnesium carbonates with predominantly platelet-shaped crystal form
JPS6086067A (en) * 1983-10-18 1985-05-15 奥多摩工業株式会社 Manufacture of plate-like calcium hydroxide
CS265971B1 (en) * 1987-08-06 1989-11-14 Bumbalek Vaclav Process for preparing anhydrous magnesium carbonate
US5269818A (en) * 1990-03-13 1993-12-14 Pfizer Inc Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
IT1275889B1 (en) * 1995-03-10 1997-10-24 L Ind Della Magnesia S P A Soc MAGNESIA DERIVATIVES PRODUCTION PROCESS
JP5194944B2 (en) * 2008-03-28 2013-05-08 東京電力株式会社 CO2 mineral fixation system
EP2418241B1 (en) 2010-08-12 2016-02-17 Bene_fit Systems GmbH & Co. KG Filling material for compound materials containing magnesium carbonate, method for its production and application

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE259627C (en) *
DE267543C (en) *
US2003208A (en) * 1932-07-12 1935-05-28 American Zinc Lead & Smelting Process for making magnesium carbonate
CH188612A (en) * 1934-05-19 1937-01-15 Ig Farbenindustrie Ag Process for the production of anhydrous, neutral magnesium carbonate from magnesium hydroxide.
AT145809B (en) * 1934-05-19 1936-05-25 Ig Farbenindustrie Ag Process for the extraction of anhydrous magnesium carbonate (magnesite) from dolomite or limestone.
DE2600485A1 (en) * 1976-01-08 1977-07-21 Vaw Ver Aluminium Werke Ag Calcium and magnesium carbonates suitable for paper mfr - made by feeding carbon dioxide into aq suspension of calcined dolomite

Also Published As

Publication number Publication date
DE2847205A1 (en) 1980-05-14
FI64119B (en) 1983-06-30
JPS5560023A (en) 1980-05-06
NO153170C (en) 1986-01-29
FI792881A (en) 1980-05-01
NO793298L (en) 1980-05-02
EP0010643B1 (en) 1981-11-25
ES485481A2 (en) 1980-05-16
PT70207A (en) 1979-10-01
FI64119C (en) 1983-10-10
DE2847205C2 (en) 1984-11-08
EP0010643A1 (en) 1980-05-14
NO153170B (en) 1985-10-21

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee