GB1367402A - Treatment of magnesite ores - Google Patents

Treatment of magnesite ores

Info

Publication number
GB1367402A
GB1367402A GB1868772A GB1868772A GB1367402A GB 1367402 A GB1367402 A GB 1367402A GB 1868772 A GB1868772 A GB 1868772A GB 1868772 A GB1868772 A GB 1868772A GB 1367402 A GB1367402 A GB 1367402A
Authority
GB
United Kingdom
Prior art keywords
magnesia
magnesium
salt
liquor
ore
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
GB1868772A
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.)
GOLD FIELDS MINING DEV Ltd
Original Assignee
GOLD FIELDS MINING DEV 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
Priority to ZA708296A priority Critical patent/ZA708296B/en
Priority to DE19712159973 priority patent/DE2159973B2/en
Application filed by GOLD FIELDS MINING DEV Ltd filed Critical GOLD FIELDS MINING DEV Ltd
Priority to GB1868772A priority patent/GB1367402A/en
Publication of GB1367402A publication Critical patent/GB1367402A/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
    • C01F5/06—Magnesia by thermal decomposition of magnesium compounds
    • 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
    • C01F5/06—Magnesia by thermal decomposition of magnesium compounds
    • C01F5/12—Magnesia by thermal decomposition of magnesium compounds by thermal decomposition of magnesium sulfate, with or without reduction
    • 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
    • C01F5/40—Magnesium sulfates

Abstract

1367402 Magnesia production GOLD FIELDS MINING & DEVELOPMENT Ltd 21 April 1972 18687/72 Heading C1A A method of producing magnesia from a magnesium carbonate ore comprising: digesting the ore in a leach solution consisting of a stoichiometric excess of strong, hob sulphuric acid such that the dissolved magnesium concentration becomes greater than 60% of saturated concentration, neutralizing any excess acid with commercial grade magnesia under oxidizing conditions such that iron is precipitated as the hydroxide, separating the leach liquor from the remaining solids, crystallizing a magnesium salt from the liquor and calcining the salt to form magnesia. The digestion preferably occurs at a temperature of above 70‹ C. and crystallization can be brought about by spray drying or by a freezing process.
GB1868772A 1970-12-08 1972-04-21 Treatment of magnesite ores Expired GB1367402A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ZA708296A ZA708296B (en) 1970-12-08 1970-12-08 Treatment of magnesite ores
DE19712159973 DE2159973B2 (en) 1970-12-08 1971-12-03 METHOD FOR MANUFACTURING MAGNESIA
GB1868772A GB1367402A (en) 1970-12-08 1972-04-21 Treatment of magnesite ores

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA708296A ZA708296B (en) 1970-12-08 1970-12-08 Treatment of magnesite ores
GB1868772A GB1367402A (en) 1970-12-08 1972-04-21 Treatment of magnesite ores

Publications (1)

Publication Number Publication Date
GB1367402A true GB1367402A (en) 1974-09-18

Family

ID=26253541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1868772A Expired GB1367402A (en) 1970-12-08 1972-04-21 Treatment of magnesite ores

Country Status (3)

Country Link
DE (1) DE2159973B2 (en)
GB (1) GB1367402A (en)
ZA (1) ZA708296B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112320826A (en) * 2020-10-29 2021-02-05 刘峰 Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408308C2 (en) * 1974-02-21 1985-01-31 Metallgesellschaft Ag, 6000 Frankfurt Process for the production of magnesium oxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112320826A (en) * 2020-10-29 2021-02-05 刘峰 Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite

Also Published As

Publication number Publication date
DE2159973B2 (en) 1976-04-15
DE2159973A1 (en) 1972-06-22
ZA708296B (en) 1972-07-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee