GB769719A - Improvements in or relating to exothermic mixtures - Google Patents
Improvements in or relating to exothermic mixturesInfo
- Publication number
- GB769719A GB769719A GB30521/54A GB3052154A GB769719A GB 769719 A GB769719 A GB 769719A GB 30521/54 A GB30521/54 A GB 30521/54A GB 3052154 A GB3052154 A GB 3052154A GB 769719 A GB769719 A GB 769719A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- clay
- perchlorate
- chlorate
- sand
- 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
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
- B22D7/10—Hot tops therefor
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
An exothermic composition particularly for use in the casting of metals consists of a metal-preferably an alkali metal-chlorate or perchlorate, aluminium, colloidal clay e.g. Fontenay sand, bentonite or china clay, and at least one oxidizing agent. The chlorate or perchlorate and the colloidal clay, preferably form 8.-20 per cent by weight of the composition and the ratio of clay to chlorate or perchlorate is preferably between 1/10 and 5/6 . satisfactory compositions comprise: Aluminium (divided particles) 5-20 per cent: Manganese dioxide or other metal oxides or mixtures thereof, 10-30 per cent: Clay-bearing sand (Fontenay containing 15 per cent clay) 5-40 per cent: Alkali metal chlorate or perchlorate 3-15 per cent: Binder, such as dextrin or coregum 2-7 per cent: Granulated alumina or silica sand or other refractory material), remainder. The mixture may be made into a prefabricated shape for incorporation into a mould or a layer of the mixture may be applied to the mould where heating is required. Specification 627,678 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR769719X | 1954-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB769719A true GB769719A (en) | 1957-03-13 |
Family
ID=9184914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30521/54A Expired GB769719A (en) | 1954-01-26 | 1954-10-22 | Improvements in or relating to exothermic mixtures |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB769719A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103719A (en) * | 1961-03-29 | 1963-09-17 | Exomet | Exothermic welding apparatus |
US3198640A (en) * | 1962-05-31 | 1965-08-03 | Exomet | Exothermic composition |
DE1204595B (en) * | 1963-01-21 | 1965-11-04 | Standard Elektrik Lorenz Ag | Arrangement for a pneumatic conveyor system, for example a pneumatic tube system |
WO1980002811A1 (en) * | 1979-06-14 | 1980-12-24 | Foseco Int | Production of metal castings |
-
1954
- 1954-10-22 GB GB30521/54A patent/GB769719A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103719A (en) * | 1961-03-29 | 1963-09-17 | Exomet | Exothermic welding apparatus |
US3198640A (en) * | 1962-05-31 | 1965-08-03 | Exomet | Exothermic composition |
DE1204595B (en) * | 1963-01-21 | 1965-11-04 | Standard Elektrik Lorenz Ag | Arrangement for a pneumatic conveyor system, for example a pneumatic tube system |
WO1980002811A1 (en) * | 1979-06-14 | 1980-12-24 | Foseco Int | Production of metal castings |
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