GB820733A - Improvements in or relating to the vacuum melting of metals in a furnace, and to furnace linings for use therein - Google Patents
Improvements in or relating to the vacuum melting of metals in a furnace, and to furnace linings for use thereinInfo
- Publication number
- GB820733A GB820733A GB35293/55A GB3529355A GB820733A GB 820733 A GB820733 A GB 820733A GB 35293/55 A GB35293/55 A GB 35293/55A GB 3529355 A GB3529355 A GB 3529355A GB 820733 A GB820733 A GB 820733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- furnace
- granules
- lining
- dec
- 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
- C22B5/16—Dry methods smelting of sulfides or formation of mattes with volatilisation or condensation of the metal being produced
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Details (AREA)
Abstract
820,733. Refractory materials. STAHLWERKE SUDWESTFALEN A. G. Dec. 8, 1955 [Dec. 8, 1954(2)], No. 35293/55. Class 22. [Also in Group XII] A furnace for melting metals or alloys, e.g. iron or steel or steel alloys, at reduced pressure, is provided with a lining that gives up no oxygen to the melt, the lining being manufactured by tightly packing dry fused magnesia granules around a core, placing the granules and core in at atmosphere of low oxygen content produced by reduced pressure and/ or a protective gas, i.e. a gas which at higher temperatures does not contain free or available oxygen, and heating the core to sinter the layer of granules around it. In the form illustrated, the sintering core 4 is of graphite which is separated from the surrounding magnesia granules 5 by corrugated cardboard or paper 6. An induction furnace inside a water-cooled induction coil 1 heats the graphite core causing the corrugated cardboard or paper to burn thereby facilitating the escape of gases from the bottom of the core through the gap formed between the core and granules. Heating is increased to 2,000‹C.-2,500‹C., whilst the furnace is under vacuum, until sintering occurs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE820733X | 1954-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820733A true GB820733A (en) | 1959-09-23 |
Family
ID=6738064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35293/55A Expired GB820733A (en) | 1954-12-08 | 1955-12-03 | Improvements in or relating to the vacuum melting of metals in a furnace, and to furnace linings for use therein |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB820733A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049759A (en) * | 1974-03-23 | 1977-09-20 | Dorentruper Sand- Und Thonwerke Gmbh | Method and arrangement for use in lining articles, particularly melting ovens |
| CN102192649A (en) * | 2010-10-15 | 2011-09-21 | 中国南方航空工业(集团)有限公司 | Crucible basket for vacuum smelting furnace and manufacturing method of crucible basket |
-
1955
- 1955-12-03 GB GB35293/55A patent/GB820733A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049759A (en) * | 1974-03-23 | 1977-09-20 | Dorentruper Sand- Und Thonwerke Gmbh | Method and arrangement for use in lining articles, particularly melting ovens |
| CN102192649A (en) * | 2010-10-15 | 2011-09-21 | 中国南方航空工业(集团)有限公司 | Crucible basket for vacuum smelting furnace and manufacturing method of crucible basket |
| CN102192649B (en) * | 2010-10-15 | 2015-08-19 | 株洲中航动力精密铸造有限公司 | A kind of crucible basket for vacuum melting furnace and preparation method thereof |
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