DE647918C - Process for the production of crystallized zirconia from zircon - Google Patents

Process for the production of crystallized zirconia from zircon

Info

Publication number
DE647918C
DE647918C DES108725D DES0108725D DE647918C DE 647918 C DE647918 C DE 647918C DE S108725 D DES108725 D DE S108725D DE S0108725 D DES0108725 D DE S0108725D DE 647918 C DE647918 C DE 647918C
Authority
DE
Germany
Prior art keywords
zircon
production
zirconium
crystallized
silica
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
DES108725D
Other languages
German (de)
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
Manufactures des Glaces et Produits Chimiques de Saint Gobain SA
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 Compagnie de Saint Gobain SA, Manufactures des Glaces et Produits Chimiques de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Application granted granted Critical
Publication of DE647918C publication Critical patent/DE647918C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • 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)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Verfahren zur Herstellung von kristallisierter Zirkonerde aus Zirkon Die Erfindung betrifft die Herstellung von Zirkoniumoxyd in kristallisiertem Zustand aus Zirkon.Process for the production of crystallized zirconia from zircon The invention relates to the production of zirconium oxide in the crystallized state made of zircon.

Das Verfahren gemäß der Erfindung besteht darin, den Zirkon zu schmelzen und dann nach dem Abkühlen und Zerkleinern mit Fluorwasserstoffsäure zu behandeln, um die Kieselsäure zu entfernen.The method according to the invention consists in melting the zircon and then after cooling and crushing to treat with hydrofluoric acid, to remove the silica.

Es ist bereits bekannt, den Zirkon vor seiner Zersetzung mit Fluorwasserstoffsäure zu behandeln, um freie Kieselsäure zu entfernen und hierauf das hinterbleibende Zirkoniumsilicat, welches durch die Fluorwasserstoffsäure nicht angegriffen worden ist, zu glühen, um durch Schlämmen des geglühten und zerkleinerten Produktes die Zirkonerde von der Kieselsäure, die mit ihr vereinigt war, durch Abschlämmen zu trennen. Dieses Verfahren weist den Mangel auf, daß der erhaltenen Zirkonerde.noch Kieselsäure beigemischt ist.It is already known that the zirconium before its decomposition with hydrofluoric acid to be treated to remove free silica and then what remains Zirconium silicate, which has not been attacked by hydrofluoric acid is to anneal by slurrying the annealed and crushed product the Zirconia from the silica that was associated with it by blow-down separate. This method has the defect that the zirconia obtained still Silicic acid is added.

Es ist auch bekannt, Mineralien, welche Zirkonium enthalten, mit Oxyden und Chloriden zu schmelzen, welche die Schmelztemperatur herabsetzen, und das geschmolzene und zerkleinerte Produkt beispielsweise mit Schwefelsäure zu behandeln, wobei neben einem im wesentlichen aus Kieselsäure bestehenden Rückstand eine Lösung von Zirkoniumsulfat, also nicht unmittelbar Zirkoniumoxyd erhalten wird. Die hierbei angegebene Entfernung eines Teiles der Kieselsäure durch Überführung in Siliciumfiuorid erfolgt erst nach der Behandlung mit Schwefelsäure.It is also known to combine minerals, which contain zirconium, with oxides and to melt chlorides, which lower the melting temperature, and the melted and to treat crushed product for example with sulfuric acid, being besides a residue consisting essentially of silica a solution of zirconium sulfate, that is, zirconium oxide is not obtained directly. The distance specified here a part of the silicic acid by conversion in Siliciumfiuorid takes place only after treatment with sulfuric acid.

Es ist schließlich auch bekannt, den Zirkon zu schmelzen und die Kieselsäure durch Destillation in freier Luft auszuscheiden. Dieses Verfahren weist den Mangel auf, daß es eine sehr lange Aufrechterhaltung einer Temperatur von mindestens 2400' C erfordert und hierdurch erheblichen Wärmeaufwand verursacht.After all, it is also known to melt the zirconium and the silica to be separated by distillation in the open air. This procedure points out the shortcoming on that there is a very long maintenance of a temperature of at least 2400 ' C requires and thereby causes a considerable amount of heat.

Allen diesen Mängeln wird durch die vorliegende Erfindung abgeholfen.All of these deficiencies are remedied by the present invention.

Nachstehend wird ein Ausführungsbeispiel der Erfindung gegeben.An embodiment of the invention is given below.

Eine Probe von natürlich vorkommendem Zirkon, die 65,30 % Zirkon, 28,6o % gebundene und 3,40% freie Kieselsäure enthält, wurde geschmolzen, durch Gießen in Wasser granuliert, fein gemahlen und zwecks Ausscheidung des Eisens, das bei dem Zerkleinerungsprozeß hineingelangt ist, über einen Magnetscheider geschickt. Die Analyse des so erhaltenen pulverförmigen Materials ergab: 64,80 °% Zirkon und 3i,95°/"fieie Kieselsäure. i kg des in dieser Weise vorbereitetem Stoffes wurde mit 600%iger Fluorwasserstoffsäure mit dem dreifachen lumen Wasser in einem Bleibottich behau wobei sich nach dem Auswaschen, Trocknen Calcinieren ein Erzeugnis ergab, das zu 98,8o°/0 aus kristallisiertem Zirkon bestand.A sample of naturally occurring zirconium containing 65.30% zirconium, 28.6o% bound and 3.40% free silica was melted, granulated by pouring into water, finely ground and finely ground to remove the iron that got into the crushing process is sent via a magnetic separator. The analysis of the powdery material obtained in this way showed: 64.80% zirconium and 3% 95% silica. 1 kg of the material prepared in this way was given a 600% strength Hydrofluoric acid by three times lumen of water in a lead tub after washing, drying Calcination gave a product which was 98.8% crystallized zirconium.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von kristallisierter Zirkonerde aus Zirkon, dadurch gew#kennzeichnet, daB der Zirkon geschmolzen und die Schmelze nach dem Abkühlen und Zerkleinern mit Fluorwasserstoff behandelt wird.PATENT CLAIM: Process for the production of crystallized zirconia made of zircon, characterized in that the zircon has melted and the melt treated with hydrogen fluoride after cooling and crushing.
DES108725D 1932-12-23 1933-03-19 Process for the production of crystallized zirconia from zircon Expired DE647918C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR762066T 1932-12-23

Publications (1)

Publication Number Publication Date
DE647918C true DE647918C (en) 1937-07-16

Family

ID=9175326

Family Applications (1)

Application Number Title Priority Date Filing Date
DES108725D Expired DE647918C (en) 1932-12-23 1933-03-19 Process for the production of crystallized zirconia from zircon

Country Status (2)

Country Link
DE (1) DE647918C (en)
FR (1) FR762066A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975627C (en) * 1950-07-15 1962-03-08 Norton Ges M B H Deutsche Abrasive body with organic bond

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024071B (en) * 1952-01-05 1958-02-13 Norton Ges M B H Deutsche Process for the production of zirconium oxide from zirconium ores
AU577291B2 (en) * 1983-06-20 1988-09-22 Norton Company Stabilized zirconia body
ZA95482B (en) * 1994-01-31 1995-10-09 Atomic Energy South Africa Treatment of a chemical
EP0796226B1 (en) * 1994-12-02 1999-03-31 Atomic Energy Corporation Of South Africa Limited Treatment of a chemical
US5958355A (en) * 1994-12-02 1999-09-28 Atomic Energy Corporation Of South Africa Limited Process for reacting a zirconia based material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975627C (en) * 1950-07-15 1962-03-08 Norton Ges M B H Deutsche Abrasive body with organic bond

Also Published As

Publication number Publication date
FR762066A (en) 1934-04-03

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