GB774491A - Improvements in or relating to heat producing agents - Google Patents

Improvements in or relating to heat producing agents

Info

Publication number
GB774491A
GB774491A GB13598/54A GB1359854A GB774491A GB 774491 A GB774491 A GB 774491A GB 13598/54 A GB13598/54 A GB 13598/54A GB 1359854 A GB1359854 A GB 1359854A GB 774491 A GB774491 A GB 774491A
Authority
GB
United Kingdom
Prior art keywords
reducing agent
agent
sodium
per cent
heat producing
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
GB13598/54A
Inventor
Kossy Strauss
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.)
Foundry Services Ltd
Original Assignee
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 Foundry Services Ltd filed Critical Foundry Services Ltd
Priority to GB13598/54A priority Critical patent/GB774491A/en
Publication of GB774491A publication Critical patent/GB774491A/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
    • 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)
  • Cookers (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A heat producing agent comprises a mixture of a reducing agent, such as aluminium or ferro-silicon or mixtures thereof, an amount of oxidizing well below the amount needed to react with the reducing agent to oxidize it completely and above 5 per cent and up to 10 per cent by weight of fluoride selected from alkali metal fluorides and sodium and potassium cryolite to facilitate burning of the reducing agent and lowering of the temperature at which the reaction starts. The oxidizing agent may be selected from potassium, sodium, strontium and barium nitrates, iron oxide in the form of ore or pure synthesised material or by-product such as hammer or rolling mill scale, manganese dioxide or nickel oxide. An organic or inorganic bonding agent, e.g. gum arabic, and inert filler material such as sand may be added and the mixture formed as or embodied in a shaped article. Specification 774,490 is referred to.
GB13598/54A 1954-05-10 1954-05-10 Improvements in or relating to heat producing agents Expired GB774491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB13598/54A GB774491A (en) 1954-05-10 1954-05-10 Improvements in or relating to heat producing agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13598/54A GB774491A (en) 1954-05-10 1954-05-10 Improvements in or relating to heat producing agents

Publications (1)

Publication Number Publication Date
GB774491A true GB774491A (en) 1957-05-08

Family

ID=10025923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13598/54A Expired GB774491A (en) 1954-05-10 1954-05-10 Improvements in or relating to heat producing agents

Country Status (1)

Country Link
GB (1) GB774491A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244133A2 (en) * 1986-05-01 1987-11-04 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244133A2 (en) * 1986-05-01 1987-11-04 Foseco International Limited Exothermic compositions
EP0244133A3 (en) * 1986-05-01 1988-02-24 Foseco International Limited Exothermic compositions
US4767800A (en) * 1986-05-01 1988-08-30 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

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