GB755279A - An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloys - Google Patents
An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloysInfo
- Publication number
- GB755279A GB755279A GB1548154A GB1548154A GB755279A GB 755279 A GB755279 A GB 755279A GB 1548154 A GB1548154 A GB 1548154A GB 1548154 A GB1548154 A GB 1548154A GB 755279 A GB755279 A GB 755279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicon
- aluminium
- calcium
- ferro
- weight
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/037—Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Aluminium and calcium are removed from molten baths of silicon by adding to the bath gaseous chlorine to form and volatilize the chlorides of aluminium and calcium and to reduce the content of these metals to less than 0.05 per cent by weight in the case af aluminium and less than 0.01 per cent by weight in the case of calcium. The gas may be introduced through a refractory tube or by bottom blowing, the temperature of the metal being preferably 1500-1700 DEG C.ALSO:Al and Ca, present as impurities in ferro-silicon alloys are removed by adding gaseous chlorine to the molten ferro-silicon to form and volatilize the chlorides of Al and Ca and to reduce the contents of these impurities to less than 0,05 per cent by weight of Al and less than 0,01 per cent by weight of Ca. In an example of treatment of a ferro-silicon containing 65 per cent by weight of Si, from 28 to 45,8 lbs. of chlorine were employed per ton of metal treated. The gas may be introduced through a refractory tube or by bottom blowing, the temperature of the metal being preferably 1500 DEG -1700 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548154A GB755279A (en) | 1954-05-26 | 1954-05-26 | An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548154A GB755279A (en) | 1954-05-26 | 1954-05-26 | An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB755279A true GB755279A (en) | 1956-08-22 |
Family
ID=10059892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1548154A Expired GB755279A (en) | 1954-05-26 | 1954-05-26 | An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB755279A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735708A (en) * | 2022-04-29 | 2022-07-12 | 成都理工大学 | Method for preparing low-iron-aluminum-calcium-content silicon |
-
1954
- 1954-05-26 GB GB1548154A patent/GB755279A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735708A (en) * | 2022-04-29 | 2022-07-12 | 成都理工大学 | Method for preparing low-iron-aluminum-calcium-content silicon |
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