US1539955A - Magnesium extraction - Google Patents

Magnesium extraction Download PDF

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Publication number
US1539955A
US1539955A US71299024A US1539955A US 1539955 A US1539955 A US 1539955A US 71299024 A US71299024 A US 71299024A US 1539955 A US1539955 A US 1539955A
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US
United States
Prior art keywords
magnesium
alkali
alloys
metal
zinc
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 - Lifetime
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Inventor
Brodde E F Rhodin
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to US71299024 priority Critical patent/US1539955A/en
Priority to GB1093025A priority patent/GB234074A/en
Priority to NL30091A priority patent/NL17331C/xx
Priority to FR597955D priority patent/FR597955A/en
Application granted granted Critical
Publication of US1539955A publication Critical patent/US1539955A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • 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
    • C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
    • C22B26/20—Obtaining alkaline earth metals or magnesium
    • C22B26/22—Obtaining magnesium
    • 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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C22B9/106—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents the refining being obtained by intimately mixing the molten metal with a molten salt or slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • This invention relates particularly to the extraction of magnesium from magnesium alloys.
  • the magnesium content of the alloy may be of more value or more in demand than the alloy itself.
  • the purpose of the invention therefore is toprovide an inexpensive and practical method for effecting the separation of the magnesium from other elements with which it has been combined.
  • Magnesium is one of the few metals that completely resists or is unaffected by the alkalis; metals as zinc, on the other hand, readily reactwith an alkali.
  • the invention involves the subjection of. the alloy to treatment in a molten alkali which causes the zinc orother metal in the treated alloy to react with the alkali and in the course of the same reaction the magnesium to separate'itself from the other metal or metals and remain dis-- associated from'the' alkali.
  • a bath of molten alkali whichmay be either sodium hydroxide or potassium hydroxide is prepared in a kettle of cast iron or other suitable material and brought to.
  • alkali reacts immediately with the alkali into zincate and hydrogen and the neu.
  • trality of the magnesium for the alkali results in the magnesium, in the presence ofi nascent hydrogen, separating in a practically' pure state and floating to the top, where it can be readily removed.
  • the process of extracting magnesium from magnesium containing allo s which ten alkaliand the introduction into such comprisesthe preparation of a bat of mol-f bath of the magnesium containing alloy in condition and quantity to; control the exothermic action resulting from such combination.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Patented June 2, 1925.
UNITED STATES PATENT OFFl-QE.
' BRODDE n r. nnonm, or cunwnLL, NEW JERSEY.
MAGNESIUM EXTRACT1011.
No Drawing.
is a specification.
This invention relates particularly to the extraction of magnesium from magnesium alloys.
Under certain circumstances, for instance in the case of an over-supply of magnesium alloys, it may be that the magnesium content of the alloy may be of more value or more in demand than the alloy itself. The purpose of the invention therefore is toprovide an inexpensive and practical method for effecting the separation of the magnesium from other elements with which it has been combined. v
The process has been found particularly practicable with the zinc, magnesium alloys and will therefore be described as applied to such alloys. i
Magnesium is one of the few metals that completely resists or is unaffected by the alkalis; metals as zinc, on the other hand, readily reactwith an alkali.
Briefly stated, the invention involves the subjection of. the alloy to treatment in a molten alkali which causes the zinc orother metal in the treated alloy to react with the alkali and in the course of the same reaction the magnesium to separate'itself from the other metal or metals and remain dis-- associated from'the' alkali. I
Considering apractical illustration: A bath of molten alkali, whichmay be either sodium hydroxide or potassium hydroxide is prepared in a kettle of cast iron or other suitable material and brought to.
a heat which need be only sufficient to initiate the reactions since the process becomes exothermic and sufiicient heat to com lete the operations is the reactions proc sgpplied automatica y as The'alloy may be' supplied to the molten alkali either in the solid or in the molten Application filed ma 13,
metal.
1924. Serial li'o. 712,980.
alkali, reacts immediately with the alkali into zincate and hydrogen and the neu. trality of the magnesium for the alkali results in the magnesium, in the presence ofi nascent hydrogen, separating in a practically' pure state and floating to the top, where it can be readily removed.
As all magnesium produced by electrolytic decomposition has to undergo purificaf tion before being sold as a-com-mercial proclnot or before being used for alloying purposes, it may prove advantageous to add a small percentage of zinc tosuch crude magnesium and then proceed with the alkali purification process as above disclosed.
Magnesium in an extremely pure state-can be produced by this process with very simple equipment.
What is claimed is:
1. The process of extracting magnesium from magnesium alloys which comprises treating such alloys ina bath of molten alkali having chemical aflinity for the metal or metals with which the magnesium' is alloyed and for which the magnesium has a natural chemical neutrality, V
2. The process of extracting magnesium from magnesium containing allo s which ten alkaliand the introduction into such comprisesthe preparation of a bat of mol-f bath of the magnesium containing alloy in condition and quantity to; control the exothermic action resulting from such combination.
3. The process of extracting magnesium from magnesium-zinc alloys which comprises introducing such-alloys at' a regulated rate into a molten alkali bathoof sodium or potassium hyd ro'xide and mechanically removing the metallic magnesium released In the ensuing reaction.
4. The process of from magnesium containing alloys which comprises treating such alloys exothermical- 1y with a molten alkali having a chemical aflinity for the metal or metals other than the magnesium in the alloy and a natural chemical neutrality for the "magnesium, thereby efi'ecting complete separation of the magnesium and floatation of the same and thereafter removing said separated floated 5. In the prepara ion of magnesium, the
extracting magnesium processwhich inclu les allo 'ng with magnesium a metal lving ,c emical aflinity form alkali which has a natural chemical,
' neutrality for magnesium and then treat-- from magnesium alloys which comprises treating such alloys in a bath of molten alkali having chemical aflinity for the metal or metals with which the magnesium is alloyed and for which the ma'gn'esium has a natural chemical neutrality and producing a combination of the alloying metal or metals with the'alkali and a separation of to ma process which includes the addition of zinc esium and the treatment in a bath of mo ten alkali to produce a combination of the zinc with the alkali and the separa-' BRODDE E. F. RHODIN.
US71299024 1924-05-13 1924-05-13 Magnesium extraction Expired - Lifetime US1539955A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US71299024 US1539955A (en) 1924-05-13 1924-05-13 Magnesium extraction
GB1093025A GB234074A (en) 1924-05-13 1925-04-27 An improved process for extracting or refining magnesium
NL30091A NL17331C (en) 1924-05-13 1925-05-01
FR597955D FR597955A (en) 1924-05-13 1925-05-08 Process for extracting magnesium from alloys or mixtures containing magnesium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71299024 US1539955A (en) 1924-05-13 1924-05-13 Magnesium extraction

Publications (1)

Publication Number Publication Date
US1539955A true US1539955A (en) 1925-06-02

Family

ID=24864338

Family Applications (1)

Application Number Title Priority Date Filing Date
US71299024 Expired - Lifetime US1539955A (en) 1924-05-13 1924-05-13 Magnesium extraction

Country Status (4)

Country Link
US (1) US1539955A (en)
FR (1) FR597955A (en)
GB (1) GB234074A (en)
NL (1) NL17331C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107586970A (en) * 2017-09-06 2018-01-16 长沙科力威蒸馏技术有限公司 A kind of method for purifying magnesium

Also Published As

Publication number Publication date
GB234074A (en) 1925-12-31
FR597955A (en) 1925-12-03
NL17331C (en) 1927-10-16

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