GB656146A - Improvements in treating iron-bearing materials - Google Patents
Improvements in treating iron-bearing materialsInfo
- Publication number
- GB656146A GB656146A GB31725/47A GB3172547A GB656146A GB 656146 A GB656146 A GB 656146A GB 31725/47 A GB31725/47 A GB 31725/47A GB 3172547 A GB3172547 A GB 3172547A GB 656146 A GB656146 A GB 656146A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrous sulphate
- iron
- bearing material
- sulphuric acid
- sulphur
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Removal Of Specific Substances (AREA)
- Compounds Of Iron (AREA)
Abstract
Ferric oxide is produced by subjecting iron-bearing material to the action of sulphuric acid and forming a concentrated aqueous solution of ferrous sulphate from which solid hydrated ferrous sulphate is obtained, e.g. by evaporation or cooling, heating the solid hydrated ferrous sulphate by hot gases passed in contact therewith for dehydration, heating the anhydrous product out of contact with the air and combustion gases for decomposition to substantially pure ferric oxide and a gaseous product consisting essentially of sulphur dioxide and sulphur trioxide, oxidizing the sulphur dioxide to sulphur trioxide, absorbing all the sulphur trioxide in concentrated sulphuric acid to regenerate the acid used in treating the iron-bearing material. Aqueous ferrous sulphate may be obtained by treating iron-bearing material with aqueous sulphuric acid or with water free acid at elevated temperature with subsequent water-leaching of the product. Dehydration may be effected in a rotary kiln at 400-450 DEG C. in a countercurrent of hot gas. The anhydrous product may be decomposed in a muffle furnace at 480-1300 DEG C. by hot combustion gases and the waste gases may be passed to the rotary kiln. Specification 656,142 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US656146XA | 1946-12-09 | 1946-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB656146A true GB656146A (en) | 1951-08-15 |
Family
ID=22063930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31725/47A Expired GB656146A (en) | 1946-12-09 | 1947-12-01 | Improvements in treating iron-bearing materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB656146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634751A1 (en) * | 1988-07-29 | 1990-02-02 | Metaleurop Sa |
-
1947
- 1947-12-01 GB GB31725/47A patent/GB656146A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634751A1 (en) * | 1988-07-29 | 1990-02-02 | Metaleurop Sa | |
| US4954322A (en) * | 1988-07-29 | 1990-09-04 | Metaleurop S.A. | Process for the recovery of metal values contained in a gangue |
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