GB794146A - Improvements in or relating to a process for the aluminothermic preparation of boron, borides and boron-containing alloys by reduction - Google Patents

Improvements in or relating to a process for the aluminothermic preparation of boron, borides and boron-containing alloys by reduction

Info

Publication number
GB794146A
GB794146A GB8734/56A GB873456A GB794146A GB 794146 A GB794146 A GB 794146A GB 8734/56 A GB8734/56 A GB 8734/56A GB 873456 A GB873456 A GB 873456A GB 794146 A GB794146 A GB 794146A
Authority
GB
United Kingdom
Prior art keywords
aluminium
boron
scorifying
oxygen
agent
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
GB8734/56A
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
Original Assignee
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
Publication of GB794146A publication Critical patent/GB794146A/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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/02—Boron; Borides
    • C01B35/04—Metal borides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/06—Dry methods smelting of sulfides or formation of mattes by carbides or the like

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Boron or borides are produced by aluminothermic reduction in a reaction charge containing an oxygen-containing boron compound, an oxygen-containing metal compound where a boride is to be produced, aluminium, and a scorifying agent which, in the quantity employed, is capable of combining with alumina and boric anhydride to form a complex slag readily soluble in mineral acid and/or caustic alkali. The scorifying agents referred to are the oxides of alkali metals and alkali earth metals and compounds derived from them such as the tungstates, molybdates and vanadates. The invention may also be applied in partially removing oxygen from oxygen-containing boron compounds to obtain products containing 75 per cent or more of boron. The aluminium used for reduction may be replaced by an aluminium alloy such as calcium-aluminium, magnesium - aluminium or silicon - aluminium. <PICT:0794146/III/1> The amount of scorifying agent to be used may be determined from ternary diagrams of the slag components showing the areas of soluble slags, an example of which for the system B2O3:CaO:Al2O3, is shown on the Figure, the area C,m,d,e,f,g,h,i,j,k,l,a,n representing the area of readily soluble slags with the area of preferred compositions shown hatched. The scorifying agent may be added in the form of a borate, e.g. borax or calcium borate.
GB8734/56A 1955-03-22 1956-03-20 Improvements in or relating to a process for the aluminothermic preparation of boron, borides and boron-containing alloys by reduction Expired GB794146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR794146X 1955-03-22

Publications (1)

Publication Number Publication Date
GB794146A true GB794146A (en) 1958-04-30

Family

ID=9233910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8734/56A Expired GB794146A (en) 1955-03-22 1956-03-20 Improvements in or relating to a process for the aluminothermic preparation of boron, borides and boron-containing alloys by reduction

Country Status (1)

Country Link
GB (1) GB794146A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317253A1 (en) * 1975-06-26 1977-02-04 Inst Khim Fiz PROCESS FOR THE PREPARATION OF CAST MINERAL REFRACTORY MATERIALS
US5587140A (en) * 1994-05-18 1996-12-24 Sumitomo Chemical Company, Limited Process for producing powders of transition metal boride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317253A1 (en) * 1975-06-26 1977-02-04 Inst Khim Fiz PROCESS FOR THE PREPARATION OF CAST MINERAL REFRACTORY MATERIALS
US5587140A (en) * 1994-05-18 1996-12-24 Sumitomo Chemical Company, Limited Process for producing powders of transition metal boride

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