GB485163A - Process for the manufacture of calcium hydride - Google Patents

Process for the manufacture of calcium hydride

Info

Publication number
GB485163A
GB485163A GB30818/36A GB3081836A GB485163A GB 485163 A GB485163 A GB 485163A GB 30818/36 A GB30818/36 A GB 30818/36A GB 3081836 A GB3081836 A GB 3081836A GB 485163 A GB485163 A GB 485163A
Authority
GB
United Kingdom
Prior art keywords
retort
calcium oxide
hydrogen
magnesium
heated
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
GB30818/36A
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.)
VENTURES Ltd
Original Assignee
VENTURES 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 VENTURES Ltd filed Critical VENTURES Ltd
Publication of GB485163A publication Critical patent/GB485163A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
    • C01B6/04—Hydrides of alkali metals, alkaline earth metals, beryllium or magnesium; Addition complexes thereof

Abstract

Calcium hydride is obtained by reducing calcium oxide with magnesium in an atmosphere of hydrogen the mixture being maintained at a temperature below 1100 DEG C., until the reduction of the calcium oxide is complete. According to one example a mixture of magnesium filings and dry calcium oxide is placed in a steel crucible which is placed in a vacuum-tight cylindrical retort. The retort is evacuated, filled with hydrogen and heated in an electric furnace, the temperature being raised gradually to 700 DEG C. in order to avoid a too sudden evolution of adsorbed hydrogen at 651 DEG C. Hydrogen is then supplied until the reaction is complete. The retort is preferably then heated to 800-900 DEG C. the retort being rotated or oscillated. According to another example calcium oxide is placed in a horizontal cylindrical retort filled with hydrogen and heated to 800 DEG C. A magnesium ingot is fused in a steel pipe occupying the central axis of the retort, this pipe being provided with a row of small holes in its upper part. The retort is given a rotating on oscillating movement to distribute the molten magnesium with the calcium oxide. The speed of rotation of the retort determines the amount of magnesium which contacts with the calcium oxide and this provides a means of controlling the reaction.
GB30818/36A 1935-11-19 1936-11-11 Process for the manufacture of calcium hydride Expired GB485163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US485163XA 1935-11-19 1935-11-19

Publications (1)

Publication Number Publication Date
GB485163A true GB485163A (en) 1938-05-11

Family

ID=21954997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30818/36A Expired GB485163A (en) 1935-11-19 1936-11-11 Process for the manufacture of calcium hydride

Country Status (2)

Country Link
FR (1) FR819533A (en)
GB (1) GB485163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10611638B2 (en) 2014-03-21 2020-04-07 Höganäs Ab (Publ) Process for manufacturing a metal carbide, nitride, boride, or silicide in powder form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10611638B2 (en) 2014-03-21 2020-04-07 Höganäs Ab (Publ) Process for manufacturing a metal carbide, nitride, boride, or silicide in powder form

Also Published As

Publication number Publication date
FR819533A (en) 1937-10-20

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