GB602062A - Production of calcium - Google Patents
Production of calciumInfo
- Publication number
- GB602062A GB602062A GB30026/45A GB3002645A GB602062A GB 602062 A GB602062 A GB 602062A GB 30026/45 A GB30026/45 A GB 30026/45A GB 3002645 A GB3002645 A GB 3002645A GB 602062 A GB602062 A GB 602062A
- Authority
- GB
- United Kingdom
- Prior art keywords
- retort
- aluminium
- calcium
- lime
- condenser
- 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Metallic calcium is produced in coherent form by thermal reduction of lime in one retort located in a furnace and condensation of calcium vapour in another zone of the retort located outside the furnace, the method being characterised in that lime-containing material mixed with aluminium as a reducing agent is charged into the reducing zone of the retort and the inner end of the condenser zone of the retort is maintained at a temperature of 740-680 DEG C. to condense calcium vapour. The condenser section may have a removable liner with insulating means for maintaining the inner end portion at a temperature not less than 740-680 DEG . The condenser lining may be coated with sodium silicate, kaolin or graphite. The charge may contain lime-containing material and aluminium in proportions to provide 105-120 per cent of the theoretical amount of aluminium for the reaction, and is preferably in the form of briquettes. Specification 270,060, [Class 82(i)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA602062X | 1945-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB602062A true GB602062A (en) | 1948-05-19 |
Family
ID=4171913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30026/45A Expired GB602062A (en) | 1945-09-06 | 1945-11-09 | Production of calcium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB602062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676459A1 (en) * | 1991-05-17 | 1992-11-20 | Pechiney Electrometallurgie | PROCESS FOR THE REFINING OF CALCIUM BY NITRIDE. |
-
1945
- 1945-11-09 GB GB30026/45A patent/GB602062A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676459A1 (en) * | 1991-05-17 | 1992-11-20 | Pechiney Electrometallurgie | PROCESS FOR THE REFINING OF CALCIUM BY NITRIDE. |
| EP0516558A1 (en) * | 1991-05-17 | 1992-12-02 | Pechiney Electrometallurgie | Method for refining calcium using nitride |
| US5226952A (en) * | 1991-05-17 | 1993-07-13 | Pechiney Electrometallurgie | Nitride process for refining calcium |
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