DE682559C - Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both - Google Patents

Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both

Info

Publication number
DE682559C
DE682559C DEI56804D DEI0056804D DE682559C DE 682559 C DE682559 C DE 682559C DE I56804 D DEI56804 D DE I56804D DE I0056804 D DEI0056804 D DE I0056804D DE 682559 C DE682559 C DE 682559C
Authority
DE
Germany
Prior art keywords
alkaline earth
earth metal
silicon
strontium
barium
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
DEI56804D
Other languages
German (de)
Inventor
Dr Hellmuth Seliger
Dr Robert Suchy
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI56804D priority Critical patent/DE682559C/en
Application granted granted Critical
Publication of DE682559C publication Critical patent/DE682559C/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
    • C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
    • C22B26/20—Obtaining alkaline earth metals or magnesium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

Verfahren zur thermischen Gewinnung von Calcium, Strontium und Barium durch Reduktion von erdalkalimetalloxydhaltigen Rohstoffen mit Hilfe von Silicium und Aluminium oder beiden Gegenstand des Patents 666 353 ist ein Verfahren zur Gewinnung von Magnesium durch Reduktion von magnesiahaltigen Rohstoffen mit Hilfe von Silicium, dadurch gekennzeichnet, daß man dem Reaktionsgemisch Alkali-oder Erdalkalifluoride in Mengen zwischen etwa 0,5 und 501" vorzugsweise :2%, zusetzt. Durch den Fluoridzusatz wird eine erhebliche Beschleunigung der Reaktionsgeschwindigkeit erreicht. ` Es wurde nun gefunden, daß eine solche reaktionsbeschleunigende Wirkung auch bei der Gewinnung der Erdalkalimetalle Calcium, Strontium und Barium aus erdalkalioxydhaltigen Rohstoffen mit Hilfe von Silicium und Aluminium oder beiden durch Zusatz von Alkali- und Erdalkalifluoriden erreicht wird. Die Menge des Fluoridzusatzes kann sich ähnlich wie in dem Verfahren des Haupt= patents zwischen 0,5 und 5 % des eigentlichen Reaktionsgemisches bewegen, wobei die besten Ergebnisse mit einem Fluor idzusatz von etwa "°/o erzielt werden.Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both the subject of patent 666,353 is a method of extraction of magnesium by reducing magnesia-containing raw materials with the help of silicon, characterized in that alkali or alkaline earth fluorides are added to the reaction mixture in amounts between about 0.5 and 501 ", preferably: 2%, added. By the addition of fluoride a considerable acceleration of the reaction rate is achieved. `It has now been found that such a reaction accelerating effect also in the Extraction of the alkaline earth metals calcium, strontium and barium from alkaline earth oxides Raw materials with the help of silicon and aluminum or both by adding alkali and alkaline earth fluorides is achieved. The amount of fluoride added can be similar as in the process of the main patent between 0.5 and 5% of the actual reaction mixture move, with best results obtained with a fluoride addition of about "° / o will.

Zweckmäßig kommt jeweils als Zusatz das Fluorid des in dem Reaktionsgemisch auftretenden Erdalkalimetalls zur Anwendung.The fluoride is expediently added to the reaction mixture in each case occurring alkaline earth metal for application.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur thermischen Gewinnung von Calcium, Strontium und Barium durch Reduktion von erdalkalimetalloxydhaltigen Rohstoffen mit Hilfe von Silicium und Aluminium oder beiden nach Patent 666 353, dadurch gekennzeichnet, daß dem Reaktionsgemisch Alkali- oder Erdalkalifluoride in Mengen von 0,5 bis 5 °lo, vorzugsweise 2 %, zugesetzt werden. PATENT CLAIMS: i. Process for the thermal extraction of calcium, strontium and barium by reducing alkaline earth metal oxide-containing raw materials with the aid of silicon and aluminum or both according to Patent 666 353, characterized in that the reaction mixture contains alkali or alkaline earth fluorides in amounts of 0.5 to 5 ° lo, preferably 2 % , can be added. 2. Verfahren gemäß Anspruch i, dadurch gekennzeichnet, daß dem Reaktionsgemisch jeweils das Fluorid des- zu erzeugenden Erdalkalimetalls zugesetzt wird.2. Procedure according to Claim i, characterized in that the reaction mixture contains the fluoride of the alkaline earth metal to be produced is added.
DEI56804D 1937-01-08 1937-01-08 Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both Expired DE682559C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI56804D DE682559C (en) 1937-01-08 1937-01-08 Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI56804D DE682559C (en) 1937-01-08 1937-01-08 Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both

Publications (1)

Publication Number Publication Date
DE682559C true DE682559C (en) 1939-10-17

Family

ID=7194440

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI56804D Expired DE682559C (en) 1937-01-08 1937-01-08 Process for the thermal extraction of calcium, strontium and barium by reducing raw materials containing alkaline earth metal oxide with the aid of silicon and aluminum or both

Country Status (1)

Country Link
DE (1) DE682559C (en)

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