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DE923007C - Process for the production of pure white calcium carbonate - Google Patents

Process for the production of pure white calcium carbonate

Info

Publication number
DE923007C
DE923007C DESCH2856D DESC002856D DE923007C DE 923007 C DE923007 C DE 923007C DE SCH2856 D DESCH2856 D DE SCH2856D DE SC002856 D DESC002856 D DE SC002856D DE 923007 C DE923007 C DE 923007C
Authority
DE
Germany
Prior art keywords
production
calcium carbonate
precipitation
pure white
gen
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
DESCH2856D
Other languages
German (de)
Inventor
Karl Dr Kuespert
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.)
Blendax GmbH
Original Assignee
Blendax Werke R Schneider and Co GmbH
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 Blendax Werke R Schneider and Co GmbH filed Critical Blendax Werke R Schneider and Co GmbH
Priority to DESCH2856D priority Critical patent/DE923007C/en
Application granted granted Critical
Publication of DE923007C publication Critical patent/DE923007C/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
    • C01F11/182—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

Landscapes

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

Description

Verfahren zur Herstellung von reinweißem Calciumcarbonat iEs ist bekannt, Erd-alkalicarbonate durch Fällung mit Kohlendioxyd aus solchen Lauagen mimt weißer Farbe unter Verwendung- von Reduktionsmitteln, wie H2 S oder Hydrazin, zu gewinnen, die als Ver- iunrei'iniigu@ngen Eiisen oder Sdhwefelverhindungen enthalten (vgl. rd'ie USA.-Patentsclirift I 994 271 und die fran:zäsi!sche Patentschrift 622 486). Es wurde gefunden, d-aß M Verwendung von Laugen oder Aufsch-lämimungen von Cailcium- hydroxyd, die wesentliche Meinigen an: Maniganver- biindiungen enthalten, nur dann ein weißes CaiIcium- caribom,at zu erhalten ,iisit, falllis die: Fällung durch Kohlendioxyd in Gegenwart von Hydrazin oder Hydroxylamin durchgeführt wird. Die auftretende Entfärbung he-,ruht darauf, d:aß sich bei -der Reduktion und. der gleichzeitigem Car- boniis:ierung weißes Mangancarbonat bildet. Es können aber :auch die Verbindungen des zwei-#verti- gen Manganis zum mehr oder weniiger größten Teil in Lösiunggehen, so d aß dem Cailaiumcarb.oniat bei der TTeniniuing von Fläsisiigkeit und Niederischlag @diie löslichen Manganveribdndunigen entzogen werden und so, eine mehr oder weniiger weiitgeiheede Ent- maniganunng stattfindet. Vorteilhaft wind das Re- duktionsmiittel gegen Ende ;der Carbonislierung zu- gesetzt, d. h. wenn praktisch alles Hydmat in Car- bonat übergeführt ist und d!ie- vor@heir dluirch. gelöstes Hydrat ,alikalieche Lösung neutral, ja sdhil:ieß@liieh schwach kohlensauer wmrd. Dias Ver'fiahren ermöglicht die Herstellung von Ouaaütätsemzeuänrüsisem aus Rohstoffen, welche :in Deutschland .in großem Umfang zuz Verfügung stehen, twiie z. B. den Kalksteinen aus der Lahn geg.end, diie piraktüsch immer Mangan in größeren Mengen enthaltien, u nd :sitdllt,daher einen erheblichen tedhniisdhem ilnid wiritselhaftlichen Foir-tsdhriitt,diax. Process for the production of pure white calcium carbonate iIt is known to make alkaline earth carbonates by precipitation with carbon dioxide from such Lauagen mimics whiter Paint using - reducing agents, like H2 S or hydrazine, which are used as iunrei'iniigu @ ngen iron or sulfur preventions included (cf. rd'ie USA.-Patentsclirift I 994 271 and the French patent specification 622 486). It was found that d-aß M use of Caustic solutions or slurries of Cailcium hydroxyd, the essential mine to: Maniganver- contain bonds, only then a white calcium caribom, at to get, iisit, falllis die: precipitation by Carbon dioxide in the presence of hydrazine or Hydroxylamine is carried out. The discoloration that occurs is due to the fact that it is in -the reduction and. the simultaneous car bonus: formation of white manganese carbonate. It but can: also the connections of the two- # verti- gen Manganis to a greater or lesser extent for the most part go into solution, so that the calcium carbonate ate the teniniuing of liquidity and low impact @diie soluble manganese compounds are removed and so, a more or less consecrated discovery maniganunng takes place. Advantageously, the re- reducing agents towards the end; set, i.e. if practically everything Hydmat is in bonat is transferred and the! ie- vor @ heir dluirch. solved Hydrate, alikalieche solution neutral, yes sdhil: iess @ liieh weak carbonic acid wmrd. Dias Ver'fiahren enables the production of Ouaaütätsemzeuänrüsem from raw materials which: in Germany available on a large scale stand, twiie z. B. the limestones from the Lahn on the other hand, the piraktüsch always manganese in larger sizes Quantities contain, and: sitdllt, therefore a considerable tedhniisdhem ilnid wiritselhaftlichen Foir-tsdhriitt, diax.

Claims (1)

PATENTANSPRUCH: VeTfähren, zur Herstellung von reinweMem Calciumcarbonat, insbesondere @durdh Fällung von Ca-Hyd@roxydillaugen oder -iaufisdhlämnvun- gen nnit Kohlendiioxyd"dadu@rdh geikennzeidhnet, daB man solche Ga Hydrnxydlaugen oder -auf- sschlämrr_.ungan verwendet, die wesentliche Men-
gen 'an Manganverb !inidungen enthalten, und,die Fällung in (Gegenwart von Hydmazin oder Hydroxylamin durch führt.
Angezogene Dirucksohriften: USA.-Patentsdh ri'ften Nr. 1994271 und :2 o2o 132; bmitisdhe Patentschrift NT. 33'9 797; franzäsisdhe Patentschrift Nz. 622 q;86; Segeris- gesammelte Sdhniften, 2. Au-, rgo8, S. 85 Und 274 biiis 276.
PATENT CLAIM: VeT ferries, for the production of pure water Calcium carbonate, especially @durdh precipitation from Ca-Hyd @ roxydillaugen or -iaufisdhlämnvun- gen nnit carbon dioxide "dadu @ rdh geikennzeidhnet, that such a hydrogen oxide solution or sschlämrr_.ungan is used to describe the essential
gen 'contain manganese verb! inidungen, and, the Precipitation in (presence of hydmazine or Hydroxylamine performs.
Tightened Diruckso pins: U.S. Patent No. 1,994,271 and: 2,020,132; See the NT patent. 33,9797 ; French patent Nz. 622 q; 86; Segeris- collected Sdhnifte, 2. Au-, rgo8, p. 85 And 274 to 276.
DESCH2856D 1941-10-15 1941-10-15 Process for the production of pure white calcium carbonate Expired DE923007C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH2856D DE923007C (en) 1941-10-15 1941-10-15 Process for the production of pure white calcium carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH2856D DE923007C (en) 1941-10-15 1941-10-15 Process for the production of pure white calcium carbonate

Publications (1)

Publication Number Publication Date
DE923007C true DE923007C (en) 1955-01-31

Family

ID=7423485

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH2856D Expired DE923007C (en) 1941-10-15 1941-10-15 Process for the production of pure white calcium carbonate

Country Status (1)

Country Link
DE (1) DE923007C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063587B (en) * 1957-03-26 1959-08-20 Solvay Process for the production of precipitated calcium carbonate
DE3432756A1 (en) * 1984-09-06 1986-03-13 Deutsche Solvay-Werke Gmbh, 5650 Solingen Shaped bodies essentially composed of calcium carbonate and use thereof
EP2824086B1 (en) 2013-07-12 2016-11-09 Xella Baustoffe GmbH Hydrothermally hardened porous or foamed concrete material and process for its production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR622486A (en) * 1926-10-04 1927-05-31 Process for making sulfur-free barite carbonate
GB339797A (en) * 1928-12-18 1930-12-18 Rene Perdu
US1994271A (en) * 1933-02-23 1935-03-12 Pure Calcium Products Company Method of making an alkaline earth metal carbonate of improved color
US2020132A (en) * 1932-01-19 1935-11-05 Virginia Smelting Company Method of bleaching mineral matter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR622486A (en) * 1926-10-04 1927-05-31 Process for making sulfur-free barite carbonate
GB339797A (en) * 1928-12-18 1930-12-18 Rene Perdu
US2020132A (en) * 1932-01-19 1935-11-05 Virginia Smelting Company Method of bleaching mineral matter
US1994271A (en) * 1933-02-23 1935-03-12 Pure Calcium Products Company Method of making an alkaline earth metal carbonate of improved color

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063587B (en) * 1957-03-26 1959-08-20 Solvay Process for the production of precipitated calcium carbonate
DE3432756A1 (en) * 1984-09-06 1986-03-13 Deutsche Solvay-Werke Gmbh, 5650 Solingen Shaped bodies essentially composed of calcium carbonate and use thereof
EP2824086B1 (en) 2013-07-12 2016-11-09 Xella Baustoffe GmbH Hydrothermally hardened porous or foamed concrete material and process for its production
EP3100991B1 (en) 2013-07-12 2017-09-13 Xella Baustoffe GmbH Method of preparing a hydrothermally cured pore or foam concrete mould

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