GB847623A - Process for roasting sulphide ores - Google Patents
Process for roasting sulphide oresInfo
- Publication number
- GB847623A GB847623A GB5948/57A GB594857A GB847623A GB 847623 A GB847623 A GB 847623A GB 5948/57 A GB5948/57 A GB 5948/57A GB 594857 A GB594857 A GB 594857A GB 847623 A GB847623 A GB 847623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- gas
- cooled
- roasting
- blown
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/10—Roasting processes in fluidised form
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/52—Preparation of sulfur dioxide by roasting sulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In the fluidised roasting of finely divided sulphide ores, cooled product gas from the roasting operation is blown substantially vertically downwards in a sharply limited and undiffused stream or streams on to the surface of the fluidised bed, in order to promote the settling of small particles suspended in the main upward gas stream. Such cooled product gas is preferably at 300-400 DEG C., and corresponds to 1/5 -\ba1/6 of the total quantity of air blown through the grate of the furnace. The downwardly moving gas stream also serves to prevent overheating in the bed and thus prevents slag formation. The cooled gas may be introduced by a plurality of nozzles, arranged in the top or inside the periphery of the furnace, and directed downwards towards the middle of the bed. Preferably the cooled gas is blown vertically downwards upon the middle of the bed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE847623X | 1956-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB847623A true GB847623A (en) | 1960-09-14 |
Family
ID=6775368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5948/57A Expired GB847623A (en) | 1956-02-22 | 1957-02-21 | Process for roasting sulphide ores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB847623A (en) |
-
1957
- 1957-02-21 GB GB5948/57A patent/GB847623A/en not_active Expired
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