GB650722A - Improvements relating to methods of decomposition of waste sulphuric acid to sulphurdioxide - Google Patents
Improvements relating to methods of decomposition of waste sulphuric acid to sulphurdioxideInfo
- Publication number
- GB650722A GB650722A GB17079/47A GB1707947A GB650722A GB 650722 A GB650722 A GB 650722A GB 17079/47 A GB17079/47 A GB 17079/47A GB 1707947 A GB1707947 A GB 1707947A GB 650722 A GB650722 A GB 650722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphuric acid
- ore
- sulphurdioxide
- decomposition
- pyrites
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
In decomposing into sulphur dioxide waste sulphuric acid and mixtures thereof, containing little or no organic substances, the waste acid or mixture is introduced in the cold into the uppermost cool or moderately warm zone, e.g. to the drying zone, of a rotary furnace where it is mixed with pyrites or other sulphidic ores to be roasted. Burnt pyrites may be added to the sulphidic ore in amount up to 30 per cent calculated on the weight of the ore. In a modification, the sulphidic ore is mixed with the waste acid and with the burnt pyrites, if the latter be present, in a separate mixing apparatus.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE650722X | 1943-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB650722A true GB650722A (en) | 1951-02-28 |
Family
ID=6581462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17079/47A Expired GB650722A (en) | 1943-09-29 | 1947-06-27 | Improvements relating to methods of decomposition of waste sulphuric acid to sulphurdioxide |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB650722A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1191344B (en) * | 1962-06-06 | 1965-04-22 | Metallgesellschaft Ag | Process for the production of sulfur dioxide from saline waste sulfuric acid |
US6170755B1 (en) * | 1995-03-24 | 2001-01-09 | Voest-Alpine Schienen Gmbh | Reduced radiated-noise rail |
-
1947
- 1947-06-27 GB GB17079/47A patent/GB650722A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1191344B (en) * | 1962-06-06 | 1965-04-22 | Metallgesellschaft Ag | Process for the production of sulfur dioxide from saline waste sulfuric acid |
US6170755B1 (en) * | 1995-03-24 | 2001-01-09 | Voest-Alpine Schienen Gmbh | Reduced radiated-noise rail |
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