GB355610A - Process for converting ferro-phosphorus rich in silicon into ferro-phosphorus of high phosphorus content free from or poor in silicon - Google Patents
Process for converting ferro-phosphorus rich in silicon into ferro-phosphorus of high phosphorus content free from or poor in siliconInfo
- Publication number
- GB355610A GB355610A GB35893/30A GB3589330A GB355610A GB 355610 A GB355610 A GB 355610A GB 35893/30 A GB35893/30 A GB 35893/30A GB 3589330 A GB3589330 A GB 3589330A GB 355610 A GB355610 A GB 355610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphorus
- ferro
- silicon
- free
- poor
- 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
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
Ferro-phosphorus rich in silicon is converted into ferro-phosphorus poor in or free from silicon and having a high phosphorus content by mixing it, preferably in a fluid state, with tricalcium or other raw phosphate, preferably in excess, say about 50 per cent above the theoretical, and fusing in a non-oxidizing atmosphere, for example in an electric furnace. The phosphate is reduced by the silicon, and the free phosphorus formed is partly taken up by the ferro-phosphorus and partly escapes, being condensed or burnt to phosphoric acid. The silica produced forms a slag with the lime. The reaction commences at about 1450 DEG C. and is completed at 1500-1600 DEG C. The product may contain up to 30 per cent of phosphorus.ALSO:Ferro-phosphorus rich in silicon is converted into ferro-phosphorus free from or poor in silicon and having a high phosphorus content by mixing it, preferably in a fluid state, with tricalcium or other raw phosphate, preferably in excess, say about 50 per cent above the theoretical, and fusing in a non-oxidizing atmosphere, for example in an electric furnace. The phosphate is reduced by the silicon, and the free phosphorus formed is partly taken up by the ferro-phosphorus and partly escapes. The silica produced forms a slag with the lime. The reaction commences at about 1450 DEG C. and is completed at 1500-1600 DEG C. The product may contain up to 30 per cent of phosphorus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE355610X | 1929-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB355610A true GB355610A (en) | 1931-08-27 |
Family
ID=6290046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35893/30A Expired GB355610A (en) | 1929-12-17 | 1930-11-28 | Process for converting ferro-phosphorus rich in silicon into ferro-phosphorus of high phosphorus content free from or poor in silicon |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB355610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2476418A (en) * | 1947-04-29 | 1949-07-19 | Monsanto Chemicals | Desiliconization of ferrophosphorus |
-
1930
- 1930-11-28 GB GB35893/30A patent/GB355610A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2476418A (en) * | 1947-04-29 | 1949-07-19 | Monsanto Chemicals | Desiliconization of ferrophosphorus |
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