GB850675A - Improvements in or relating to multiple hearth furnaces and methods of operating thesame - Google Patents
Improvements in or relating to multiple hearth furnaces and methods of operating thesameInfo
- Publication number
- GB850675A GB850675A GB8478/59A GB847859A GB850675A GB 850675 A GB850675 A GB 850675A GB 8478/59 A GB8478/59 A GB 8478/59A GB 847859 A GB847859 A GB 847859A GB 850675 A GB850675 A GB 850675A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hearths
- multiple hearth
- relating
- methods
- hearth furnaces
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Incineration Of Waste (AREA)
Abstract
850,675. Multiple hearth furnaces. METALLGESELLSCHAFT A.G. March 11, 1959 [March 12, 1958], No. 8478/59. Class 51 (2). Even distribution of heat in a multiple hearth furnace 1 for roasting pyrites is assisted by extracting gases through valve-controlled pipes 10a, 10b, 10c from hearths below the top hearth, cooling them in a waste heat boiler 8, and recirculating them to lower-middle hearths through valve-controlled pipes 12a, 12b, 12c. Roasting gas is withdrawn as usual from the top hearth through a pipe 7 which also enters the waste heat boiler. Air used to cool the central rotary shaft 4 passes through an economiser 4a and pipe 5 to be introduced as primary air into the bottom hearths by branch pipes 5a, 5b.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE850675X | 1958-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB850675A true GB850675A (en) | 1960-10-05 |
Family
ID=6778366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8478/59A Expired GB850675A (en) | 1958-03-12 | 1959-03-11 | Improvements in or relating to multiple hearth furnaces and methods of operating thesame |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB850675A (en) |
-
1959
- 1959-03-11 GB GB8478/59A patent/GB850675A/en not_active Expired
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