GB835981A - Production of hard burned agglomerates of fine magnetite ore - Google Patents
Production of hard burned agglomerates of fine magnetite oreInfo
- Publication number
- GB835981A GB835981A GB22690/58A GB2269058A GB835981A GB 835981 A GB835981 A GB 835981A GB 22690/58 A GB22690/58 A GB 22690/58A GB 2269058 A GB2269058 A GB 2269058A GB 835981 A GB835981 A GB 835981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pellets
- zone
- haematite
- preheating
- pass
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2413—Binding; Briquetting ; Granulating enduration of pellets
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)
- Manufacture And Refinement Of Metals (AREA)
Abstract
835,981. Agglomerating ores. ALLISCHALMERS MANUFACTURING CO. July 15, 1958 [July 22, 1957], No. 22690/58. Class 82(1) [Also in Group XII] A process for making hard, unsintered pellets of finely divided magnetite ore comprises forming the ore into moist green pellets, arranging the pellets as a movable body with individual pellets at rest within the body, heating the pellets to drive off moisture, preheating the dried pellets to oxidize magnetite to heamatite and to cause the grains of haematite within each pellet to bridge together to develop pellet strength and then tumbling the pellets in a highly oxidizing atmosphere to complete the growth of haematite grains and to provide a continuous network of haematite crystals throughout. each pellet without formation of slag. In the apparatus shown in Fig. 1, pellets are delivered from a hopper 12 to moving grate 13 on which they pass in the form of a layer of pellets through a drying zone 22, where drying is effected at a temperature in the range 500-900‹F., then to preheating zone 26, preheating being effected in the range 1600-1800‹F. The pellets then pass to inclined rotary kiln 32 in which final firing takes place in the range 2200- 2450‹F. The pellets fall into rotary cooler 50 where they preheat combustion air passing up to the furnace. Hot gases from fuel burner 41 pass through the rotary kiln, downwards through the layer of pellets in zone 26, through pipe 27, downwards through the layer of pellets in zone- 22 and are exhausted via the stack 20.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US835981XA | 1957-07-22 | 1957-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB835981A true GB835981A (en) | 1960-06-01 |
Family
ID=22179396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22690/58A Expired GB835981A (en) | 1957-07-22 | 1958-07-15 | Production of hard burned agglomerates of fine magnetite ore |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB835981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836618A (en) * | 2022-07-04 | 2022-08-02 | 华北理工大学 | Roasting method of fluxed magnetite pellets |
-
1958
- 1958-07-15 GB GB22690/58A patent/GB835981A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836618A (en) * | 2022-07-04 | 2022-08-02 | 华北理工大学 | Roasting method of fluxed magnetite pellets |
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