GB391462A - Process for manufacturing caustic soda - Google Patents
Process for manufacturing caustic sodaInfo
- Publication number
- GB391462A GB391462A GB29896/31A GB2989631A GB391462A GB 391462 A GB391462 A GB 391462A GB 29896/31 A GB29896/31 A GB 29896/31A GB 2989631 A GB2989631 A GB 2989631A GB 391462 A GB391462 A GB 391462A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- water
- reaction mixture
- gases
- sodium
- 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
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compounds Of Iron (AREA)
Abstract
In obtaining sodium hydroxide by the action of ferric oxide on sodium nitrate at elevated temperature and the subsequent decomposition of the sodium ferrite so formed by means of water, amorphous silicic acid is included in the reaction mixture for carrying out the first step of the process. Alternatively, natural limonite may be employed as a material containing both ferric oxide and amorphous silica. The first step of the process may be carried out at 600-750 DEG C. preferably under reduced pressure in an inclined revolving furnace, a furnace provided with a screw-conveyer, or a shaft furnace to which the material is supplied in a granular form. Air or other gases such as combustion gases may be supplied to the furnace and either the gases or the reaction mixture may contain water vapour or water. The air &c. may flow either in cocurrent with or in countercurrent to the reaction mixture. The decomposition of the sodium ferrite by water may be effected at temperatures above 100 DEG C. under pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT391462X | 1930-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB391462A true GB391462A (en) | 1933-04-28 |
Family
ID=3673347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29896/31A Expired GB391462A (en) | 1930-11-04 | 1931-10-28 | Process for manufacturing caustic soda |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB391462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835824B2 (en) † | 2004-12-23 | 2013-09-25 | Colgate-Palmolive Company | Oral care implement |
-
1931
- 1931-10-28 GB GB29896/31A patent/GB391462A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835824B2 (en) † | 2004-12-23 | 2013-09-25 | Colgate-Palmolive Company | Oral care implement |
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