WO2015150907A3 - High purity synthetic fluorite and process for preparing the same - Google Patents

High purity synthetic fluorite and process for preparing the same Download PDF

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Publication number
WO2015150907A3
WO2015150907A3 PCT/IB2015/000442 IB2015000442W WO2015150907A3 WO 2015150907 A3 WO2015150907 A3 WO 2015150907A3 IB 2015000442 W IB2015000442 W IB 2015000442W WO 2015150907 A3 WO2015150907 A3 WO 2015150907A3
Authority
WO
WIPO (PCT)
Prior art keywords
high purity
purity synthetic
synthetic fluorite
preparing
same
Prior art date
Application number
PCT/IB2015/000442
Other languages
French (fr)
Other versions
WO2015150907A2 (en
Inventor
Luca Pala
Michele LAVANGA
Original Assignee
Fluorsid S.P.A.
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 Fluorsid S.P.A. filed Critical Fluorsid S.P.A.
Priority to EP15771700.0A priority Critical patent/EP3126290A2/en
Publication of WO2015150907A2 publication Critical patent/WO2015150907A2/en
Publication of WO2015150907A3 publication Critical patent/WO2015150907A3/en

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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
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution

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

The present invention relates to a high purity synthetic fluorite (CaF2). Moreover, the present invention relates to a process for the preparation of said high purity synthetic fluorite (CaF2), classified as acid grade, starting from fluorosilicic acid H2S1F6 (FSA) and calcium carbonate (CaCO3). Finally, the present invention relates to the use of said high purity synthetic fluorite (CaF2) in the industrial production of hydrofluoric acid.
PCT/IB2015/000442 2014-04-04 2015-04-02 High purity synthetic fluorite and process for preparing the same WO2015150907A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15771700.0A EP3126290A2 (en) 2014-04-04 2015-04-02 High purity synthetic fluorite and process for preparing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2014A000607 2014-04-04
ITMI20140607 2014-04-04

Publications (2)

Publication Number Publication Date
WO2015150907A2 WO2015150907A2 (en) 2015-10-08
WO2015150907A3 true WO2015150907A3 (en) 2016-03-10

Family

ID=50897749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/000442 WO2015150907A2 (en) 2014-04-04 2015-04-02 High purity synthetic fluorite and process for preparing the same

Country Status (3)

Country Link
EP (1) EP3126290A2 (en)
MA (1) MA39797A (en)
WO (1) WO2015150907A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900015324A1 (en) * 2019-08-30 2021-03-02 Fluorsid S P A High purity amorphous silica and its preparation process
CN113683113A (en) * 2021-07-21 2021-11-23 嘉峪关宏晟电热有限责任公司 Process for purifying calcium fluoride from fluorite ore subjected to flotation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031193A (en) * 1974-02-15 1977-06-21 Kali-Chemie Aktiengesellschaft Process for preparing calcium fluoride from hexafluoro silicic acid
EP0002016A1 (en) * 1977-11-15 1979-05-30 Bayer Ag Method of purifying ammonium fluoride solutions
WO2013190139A2 (en) * 2012-06-21 2013-12-27 Nanofluor Gmbh Calcium fluoride sol and optically active surface coatings derived thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031193A (en) * 1974-02-15 1977-06-21 Kali-Chemie Aktiengesellschaft Process for preparing calcium fluoride from hexafluoro silicic acid
EP0002016A1 (en) * 1977-11-15 1979-05-30 Bayer Ag Method of purifying ammonium fluoride solutions
WO2013190139A2 (en) * 2012-06-21 2013-12-27 Nanofluor Gmbh Calcium fluoride sol and optically active surface coatings derived thereof

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
"Bureau of Mines Report of Investigations / April 1971", 1 January 1971, U.S. DEPARTMENT OF THE INTERIOR, article HENRY E. BLAKE ET AL: "Utilization of waste fluorosilicic acid. 1. Laboratory investigations.", pages: 1 - 15, XP055236372 *
"Ullmann's Encyclopedia of Industrial Chemistry", 15 June 2000, WILEY-VCH VERLAG GMBH & CO. KGAA, Weinheim, Germany, ISBN: 978-3-52-730673-2, article JEAN AIGUEPERSE ET AL: "Fluorine Compounds, Inorganic", XP055054753, DOI: 10.1002/14356007.a11_307 *
AUGUSTYN W ET AL: "Studies of the reaction of crystalline calcium carbonate with aqueous solutions of NH4F, KF and NaF", JOURNAL OF FLUORINE CHEMISTRY, ELSEVIER, NL, vol. 12, no. 4, 1 October 1978 (1978-10-01), pages 281 - 292, XP026619628, ISSN: 0022-1139, [retrieved on 19781001], DOI: 10.1016/S0022-1139(00)82845-6 *
LISA M. VRANA: "Calcium Fluoride", KIRK-OTHMER ENCYCLOPEDIA OF CHEMICAL TECHNOLOGY, 17 September 2010 (2010-09-17), USA, XP055236389, ISBN: 978-0-471-23896-6, Retrieved from the Internet <URL:http://onlinelibrary.wiley.com/store/10.1002/0471238961.0301120313010813.a01.pub3/asset/calcmahm.a01.pdf?v=1&t=ii76zdeu&s=21f89b4f6a14975b5d9a5ae586ba14f04514f8ba> [retrieved on 20151215], DOI: 10.1002/0471238961.0301120313010813.a01.pub3 *
See also references of EP3126290A2 *

Also Published As

Publication number Publication date
EP3126290A2 (en) 2017-02-08
WO2015150907A2 (en) 2015-10-08
MA39797A (en) 2017-02-08

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