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(19)

(11)

2 526 075

(13)

(51)

IPC

C01G25/00(2006-01-01)

C01G25/04(2006-01-01)

(21) (22)

Application

2012107589/05, 2010-07-29

(24)

Start date

2010-07-29

(22)

Actual filing date

2010-07-29

(45)

Published

2014-08-20

(72)

Inventor

Retif Villem LibenbergNel Jokhannes ToodorusDju Plessis Vil'Gel'MinaKrus Filippus Loudvik

(73)

Holder

Zeh Saus Ehfrikan N'Juklieh Ehnerdzhi Korporehjshn Limitid

METHOD OF TREATING ZIRCONIUM DIOXIDE-BASED MATERIAL WITH AMMONIUM BIFLUORIDE Russian patent published in 2014 - IPC C01G25/00 C01G25/04

Abstract RU 2526075 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of treating zirconium dioxide-based material. The method includes reacting, at a reaction step (18) decomposed zircon ZrO₂·SiO₂ (16) with ammonium bifluoride NH₄F·HF (20) in accordance with the reaction equation 1.1: ZrO₂ ·SiO₂ + NH₄F·HF → (NH₄)₃ZrF₇ + (NH₄)₂SiF₆ + H₂O 1.1, to obtain (NH₄)₃ZrF₇ and (NH₄)₂SiF₆ as reaction products (22).

EFFECT: invention provides an anhydrous process of enriching zirconium-containing materials to obtain anhydrous ZrF₄, which is the preferred precursor for a plurality of applications unlike hydrous ZrF₄·H₂O.

10 cl, 2 dwg, 1 ex

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RU 2 526 075 C2

Authors

Retif Villem Libenberg

Nel Jokhannes Toodorus

Dju Plessis Vil'Gel'Mina

Krus Filippus Loudvik

Dates

2014-08-20—Published

2010-07-29—Filed