GB709882A - Process for extracting zirconia from zircon ores - Google Patents

Process for extracting zirconia from zircon ores

Info

Publication number
GB709882A
GB709882A GB23853/52A GB2385352A GB709882A GB 709882 A GB709882 A GB 709882A GB 23853/52 A GB23853/52 A GB 23853/52A GB 2385352 A GB2385352 A GB 2385352A GB 709882 A GB709882 A GB 709882A
Authority
GB
United Kingdom
Prior art keywords
zirconia
zircon
heated
temperature
glass
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
GB23853/52A
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.)
Norton Grinding Wheel Co Ltd
Original Assignee
Norton Grinding Wheel Co Ltd
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 Norton Grinding Wheel Co Ltd filed Critical Norton Grinding Wheel Co Ltd
Publication of GB709882A publication Critical patent/GB709882A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/14—Obtaining zirconium or hafnium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

A zircon ore is heated with or without an addition of alkali metal oxide-yielding material to a temperature sufficient to decompose it to zirconia and glass, and the product is heated at 75-250 DEG C. with a 10-15 per cent. solution of sodium or potassium hydroxide for 1-60 hours to separate the silicate from the zirconia. If the zircon is heated alone the temperature should be 1800 DEG C. and the product should be quenched to to prevent reformation of zirconium silicate; if glassforming constituents are added, e.g. in the proportion of 0.02 to 0.50 mols per mol of zircon, lower temperatures may be used and quenching is unnecessary. The glass-forming addition may contain up to 2 per cent. of borax. The grain size of the zirconia produced varies directly with the temperature and with the amount of alkali added, and particles of controlled sizes between 1 and 50 microns may be obtained. The process may be applied to hafnium-containing zirconium ores from which pure hafnia may be subsequently separated.
GB23853/52A 1952-01-05 1952-09-23 Process for extracting zirconia from zircon ores Expired GB709882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US709882XA 1952-01-05 1952-01-05

Publications (1)

Publication Number Publication Date
GB709882A true GB709882A (en) 1954-06-02

Family

ID=22098574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23853/52A Expired GB709882A (en) 1952-01-05 1952-09-23 Process for extracting zirconia from zircon ores

Country Status (1)

Country Link
GB (1) GB709882A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981594A (en) * 1956-01-11 1961-04-25 Burkin Alfred Richard Process for reducing the silica content of zircon
DE3527289A1 (en) * 1984-08-01 1986-02-13 Cookson Group Plc, London METHOD FOR TREATING DISSOCIATED ZIRCONIUM SILICATE
DE102004014374C5 (en) * 2004-03-24 2011-01-05 Schott Ag Use of zirconium oxide and hafnium oxide-containing refractory material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981594A (en) * 1956-01-11 1961-04-25 Burkin Alfred Richard Process for reducing the silica content of zircon
DE3527289A1 (en) * 1984-08-01 1986-02-13 Cookson Group Plc, London METHOD FOR TREATING DISSOCIATED ZIRCONIUM SILICATE
US4840774A (en) * 1984-08-01 1989-06-20 Tam Ceramics Inc. Process for the production of zirconium tetrachloride from dissociated zircon
DE102004014374C5 (en) * 2004-03-24 2011-01-05 Schott Ag Use of zirconium oxide and hafnium oxide-containing refractory material

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