GB861931A - Method for treating magnesia - Google Patents

Method for treating magnesia

Info

Publication number
GB861931A
GB861931A GB10576/58A GB1057658A GB861931A GB 861931 A GB861931 A GB 861931A GB 10576/58 A GB10576/58 A GB 10576/58A GB 1057658 A GB1057658 A GB 1057658A GB 861931 A GB861931 A GB 861931A
Authority
GB
United Kingdom
Prior art keywords
magnesia
solution
treatment
metal hydroxide
water
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
GB10576/58A
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.)
International Minerals and Chemical Corp
Original Assignee
International Minerals and Chemical Corp
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 International Minerals and Chemical Corp filed Critical International Minerals and Chemical Corp
Publication of GB861931A publication Critical patent/GB861931A/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
    • C01F5/00—Compounds of magnesium
    • C01F5/02—Magnesia

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 reactivity of magnesia is improved by contacting the magnesia with an aqueous solution of an alkali-metal hydroxide at elevated temperature, and then washing the treated magnesia. The solution preferably contains 5-10% by weight of the hydroxide, and the treatment therewith preferably lasts 2-25 hours and the temperature is preferably above 75 DEG C., especially at the boiling point of the solution. The magnesia may be a crude magnesia such as dead-burnt magnesia or that obtained by the pyrolysis of magnesium chloride hydrates, and prior to the treatment water-soluble impurities may be leached out by water or a dilute alkali metal hydroxide solution, which latter may be filtrate recycled from the subsequent magnesia treatment. The washed treated magnesia may be dried and calcined, for example at 550-750 DEG C.
GB10576/58A 1957-04-29 1958-04-02 Method for treating magnesia Expired GB861931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US861931XA 1957-04-29 1957-04-29

Publications (1)

Publication Number Publication Date
GB861931A true GB861931A (en) 1961-03-01

Family

ID=22196909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10576/58A Expired GB861931A (en) 1957-04-29 1958-04-02 Method for treating magnesia

Country Status (1)

Country Link
GB (1) GB861931A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376823A1 (en) * 1977-01-10 1978-08-04 Advanced Mineral Res PROCEDURE FOR RECOVERING MAGNESIA FROM COATING MATERIALS FROM THE REPAIR OF OVENS
US4113834A (en) * 1977-02-01 1978-09-12 Roger Show Process for converting waste dead-burned magnesium oxide-containing material into useful product
US20180134622A1 (en) * 2016-11-17 2018-05-17 Refractory Intellectual Property Gmbh & Co. Kg Method for treating refractory ceramic products, use of the treated products, and a refractory ceramic product

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376823A1 (en) * 1977-01-10 1978-08-04 Advanced Mineral Res PROCEDURE FOR RECOVERING MAGNESIA FROM COATING MATERIALS FROM THE REPAIR OF OVENS
US4140745A (en) * 1977-01-10 1979-02-20 Advanced Mineral Research Ab Method of recovering magnesia from scrap brick
US4113834A (en) * 1977-02-01 1978-09-12 Roger Show Process for converting waste dead-burned magnesium oxide-containing material into useful product
US20180134622A1 (en) * 2016-11-17 2018-05-17 Refractory Intellectual Property Gmbh & Co. Kg Method for treating refractory ceramic products, use of the treated products, and a refractory ceramic product
EP3323793A1 (en) * 2016-11-17 2018-05-23 Refractory Intellectual Property GmbH & Co. KG Method for treating refractory ceramic products, use of the treated articles, and a refractory ceramic product
US10759703B2 (en) * 2016-11-17 2020-09-01 Refractory Intellectual Property Gmbh & Co. Kg Method for treating refractory ceramic products, use of the treated products, and a refractory ceramic product

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