GB891035A - Improvements in or relating to heat-producing mixtures - Google Patents
Improvements in or relating to heat-producing mixturesInfo
- Publication number
- GB891035A GB891035A GB229559A GB229559A GB891035A GB 891035 A GB891035 A GB 891035A GB 229559 A GB229559 A GB 229559A GB 229559 A GB229559 A GB 229559A GB 891035 A GB891035 A GB 891035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mesh sieve
- whole
- pass
- heat
- iron
- 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
- 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
- C22B5/06—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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A heat-producing composition comprises a mixture of finely-divided aluminium, finely-divided elemental silicon, at least one oxidising agent and a small proportion of iron powder. The silicon may be 2 to 12% of the whole, and at least 50% of it may pass a 200 mesh sieve. The aluminium may be 12 to 40% of the whole, and at least 6% of it may pass a 200 mesh sieve with at least 40% passing a 100 mesh sieve. The composition may contain 6 to 15% of an oxidising agent or agents, which may be selected from alkali metal nitrates and chlorates, iron oxides and manganese oxides. The iron may be at most 10% of the whole, and preferably at least 60% of it should pass a 200 mesh sieve. The composition may also contain an inert filler and further a binding agent so that slabs or sleeves may be formed. According to the Provisional Specification a fluoride may be included and examples are given in which a fluoride is used. Specifications 627,678, 785,984 and 805,823 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB229559A GB891035A (en) | 1959-01-21 | 1959-01-21 | Improvements in or relating to heat-producing mixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB229559A GB891035A (en) | 1959-01-21 | 1959-01-21 | Improvements in or relating to heat-producing mixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB891035A true GB891035A (en) | 1962-03-07 |
Family
ID=9737059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB229559A Expired GB891035A (en) | 1959-01-21 | 1959-01-21 | Improvements in or relating to heat-producing mixtures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB891035A (en) |
-
1959
- 1959-01-21 GB GB229559A patent/GB891035A/en not_active Expired
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