GB627678A - Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent - Google Patents

Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent

Info

Publication number
GB627678A
GB627678A GB23028/47A GB2302847A GB627678A GB 627678 A GB627678 A GB 627678A GB 23028/47 A GB23028/47 A GB 23028/47A GB 2302847 A GB2302847 A GB 2302847A GB 627678 A GB627678 A GB 627678A
Authority
GB
United Kingdom
Prior art keywords
aluminium
mixture
fluoride
relating
sodium
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
GB23028/47A
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.)
RONALD FRERERICK BODDEY
Foundry Services Ltd
Original Assignee
RONALD FRERERICK BODDEY
Foundry Services 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 RONALD FRERERICK BODDEY, Foundry Services Ltd filed Critical RONALD FRERERICK BODDEY
Priority to GB23028/47A priority Critical patent/GB627678A/en
Publication of GB627678A publication Critical patent/GB627678A/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
    • C22B5/06—Dry methods smelting of sulfides or formation of mattes by carbides or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/06—Heating the top discard of ingots
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

A heat-producing agent comprises a mixture of aluminium and an amount of oxidizing agent below the amount needed to oxidize the aluminium completely and 1.5 per cent by weight of a fluoride to facilitate the burning of the aluminium and the lowering of the temperature at which the reaction starts. The fluoride may be sodium fluoride or sodium or potassium cryolite or a mixture of these. The mixture may be incorporated in a shaped body such as that described in Specification 606,119, [Group V], and may be bonded with gum and contain bentonite and granulated grog. The oxidizing agent may be sodium nitrate, manganese dioxide or iron oxides or a mixture of these. The aluminium may be in the form of sawings and preferably should pass through a 20-mesh sieve. Examples are given of mixtures suitable for use with steel, copper and aluminium castings.
GB23028/47A 1947-08-19 1947-08-19 Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent Expired GB627678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23028/47A GB627678A (en) 1947-08-19 1947-08-19 Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23028/47A GB627678A (en) 1947-08-19 1947-08-19 Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent

Publications (1)

Publication Number Publication Date
GB627678A true GB627678A (en) 1949-08-12

Family

ID=10188950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23028/47A Expired GB627678A (en) 1947-08-19 1947-08-19 Improvements in or relating to heat producing mixtures containing aluminium and an oxidising agent

Country Status (1)

Country Link
GB (1) GB627678A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778723A (en) * 1953-01-30 1957-01-22 Toshio Yoshida Method for eliminating the explosive reaction in a thermit process
US3144690A (en) * 1961-07-17 1964-08-18 Foseco Int Exothermically reacting shaped products for use in foundry practice
DE1271007B (en) * 1962-04-16 1968-06-20 Metalurgitschen Zd Lenin Process for protecting carbon materials from oxidation
US3470276A (en) * 1965-02-20 1969-09-30 Sekisui Suponji Kogyo Kk Method of manufacturing porous riser insulating sleeve
US4767800A (en) * 1986-05-01 1988-08-30 Foseco International Limited Exothermic compositions
US5180759A (en) * 1986-05-01 1993-01-19 Foseco International Limited Exothermic compositions
US5632326A (en) * 1993-04-22 1997-05-27 Foseco International Limited Mould and a method for the casting of metals and refractory compositions for use therein
EP0993889A1 (en) * 1998-10-09 2000-04-19 Masamitsu Miki Foundry exothermic assembly
EP1273369A2 (en) 1996-07-18 2003-01-08 Kemen Recupac, S.A. Procedure for the production of sleeves and other feeder head and supply elements for casting molds, and composition for preparing said sleeves and elements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778723A (en) * 1953-01-30 1957-01-22 Toshio Yoshida Method for eliminating the explosive reaction in a thermit process
US3144690A (en) * 1961-07-17 1964-08-18 Foseco Int Exothermically reacting shaped products for use in foundry practice
DE1271007B (en) * 1962-04-16 1968-06-20 Metalurgitschen Zd Lenin Process for protecting carbon materials from oxidation
US3470276A (en) * 1965-02-20 1969-09-30 Sekisui Suponji Kogyo Kk Method of manufacturing porous riser insulating sleeve
US4767800A (en) * 1986-05-01 1988-08-30 Foseco International Limited Exothermic compositions
US5180759A (en) * 1986-05-01 1993-01-19 Foseco International Limited Exothermic compositions
US5632326A (en) * 1993-04-22 1997-05-27 Foseco International Limited Mould and a method for the casting of metals and refractory compositions for use therein
EP1273369A2 (en) 1996-07-18 2003-01-08 Kemen Recupac, S.A. Procedure for the production of sleeves and other feeder head and supply elements for casting molds, and composition for preparing said sleeves and elements
EP0993889A1 (en) * 1998-10-09 2000-04-19 Masamitsu Miki Foundry exothermic assembly

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