GB1364150A - Pellets and their production - Google Patents
Pellets and their productionInfo
- Publication number
- GB1364150A GB1364150A GB4441872A GB4441872A GB1364150A GB 1364150 A GB1364150 A GB 1364150A GB 4441872 A GB4441872 A GB 4441872A GB 4441872 A GB4441872 A GB 4441872A GB 1364150 A GB1364150 A GB 1364150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pellets
- vibrator
- mixture
- carbon
- iron
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1364150 Ore pellets; silicon carbide F O WIENERT 26 Sept 1972 44418/72 Heading C1A [Also in Divisions B5 and C5] Rounded pellets, especially of carbon-reducible iron ores or of carbon, are formed from a mixture of particles and an aqueous liquid by vibrating the mixture whilst rolling it into a dense uniform layer, dividing this mass into equal pellet-sized bodies, rounding the bodies into pellets and drying them. The amount of liquid present in the mixture should exceed that held by the densely packed particles, the amount of the excess depending upon the particulate material. The mixture may be fed to a conveyer 13, having side plates (not shown), whereon it is doctored by a roll 21, and compacted by a pair of rolls 27 carrying a vibrator 31. The compacted layer is sliced into strips by slitting knives 33, the strips being cut transversely into cubes by a flying cutter 35. The cubes fall on to a sloping oscillating table 39 where they are rounded. This table may additionally be vibrated and provided over its surface with rounded protuberances. Other tumbling means such as a rotary drum may replace the oscillating table. Drying may be effected by hot gas, or by coating the pellets with powder which may remain thereon to form a shell either of the same or a different composition. In an alternative arrangement (Fig. 2, not shown) the compacting vibrator is below the conveyer and the two cutters are replaced by an endless belt mechanism comprising hinged sections of width equal to that of the compacted layer and each comprising a grid which is brought down on to the compacted layer to penetrate it, assisted by a vibrator, the cut out pieces then being discharged on to the shaking table as before, a further vibrator being used to assist in dislodging them from the grid. After partial drying the pellets may be impregnated, or the coating thereon impregnated with binder in a liquid, e.g. water and then completely dried. Examples 1 to 5 describe in detail the use of the method for producing pellets of various iron ores, the green pellets being dried and hardened by hot oxidizing gases. A small quantity of bentonite may be added and the ore-bentonite powder may be used to coat the pellets during tumbling. Bituminous coal may be used with coarse titaniferous magnetite ore, the proportions being such that upon heating the pellets in a kiln most of the oxide is reduced to metallic iron and sufficient carbon is left to reduce and combine with the titanium when the pellets are subsequently smelted. The dried pellets were cooled in an inert atmosphere. Partially pre-reduced iron oxides may be used and blast furnace dust, other waste ferrous material, and coke breeze may be included (Examples 6-7). Iron-oxide with carbon pellets may have limestone particles added to improve desulphurization during smelting (Example 11). Other oxides may be pelletized by the method, Example 12 describing pellets formed from silica, coal, pitch and tar.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4441872A GB1364150A (en) | 1972-09-26 | 1972-09-26 | Pellets and their production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4441872A GB1364150A (en) | 1972-09-26 | 1972-09-26 | Pellets and their production |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1364150A true GB1364150A (en) | 1974-08-21 |
Family
ID=10433206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4441872A Expired GB1364150A (en) | 1972-09-26 | 1972-09-26 | Pellets and their production |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1364150A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372779A (en) * | 1979-10-09 | 1983-02-08 | Kobe Steel, Ltd. | Iron ore pellets containing coarse ore particles |
EP0207654A1 (en) * | 1985-06-27 | 1987-01-07 | Nippon Kokan Kabushiki Kaisha | Method for continuously manufacturing fired pellets |
EP0916742A1 (en) * | 1997-10-30 | 1999-05-19 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets with low bentonite content |
US7438730B2 (en) | 1997-10-30 | 2008-10-21 | Kobe Steel, Ltd. | Method of producing iron oxide pellets |
WO2010028932A1 (en) * | 2008-09-11 | 2010-03-18 | Siemens Vai Metals Technologies Gmbh & Co | Process for producing agglomerates of finely particulate iron carriers |
RU2524604C1 (en) * | 2013-03-11 | 2014-07-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Device for compacting, mixing and graining of bulk materials |
US11932917B2 (en) | 2017-04-18 | 2024-03-19 | Binding Solutions Ltd | Iron ore pellets |
-
1972
- 1972-09-26 GB GB4441872A patent/GB1364150A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372779A (en) * | 1979-10-09 | 1983-02-08 | Kobe Steel, Ltd. | Iron ore pellets containing coarse ore particles |
EP0207654A1 (en) * | 1985-06-27 | 1987-01-07 | Nippon Kokan Kabushiki Kaisha | Method for continuously manufacturing fired pellets |
US4723995A (en) * | 1985-06-27 | 1988-02-09 | Nippon Kokan Kabushiki Kaisha | Method for continuously manufacturing fired pellets |
EP0916742A1 (en) * | 1997-10-30 | 1999-05-19 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets with low bentonite content |
US6579505B2 (en) | 1997-10-30 | 2003-06-17 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets |
US6811759B2 (en) | 1997-10-30 | 2004-11-02 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets |
US7438730B2 (en) | 1997-10-30 | 2008-10-21 | Kobe Steel, Ltd. | Method of producing iron oxide pellets |
WO2010028932A1 (en) * | 2008-09-11 | 2010-03-18 | Siemens Vai Metals Technologies Gmbh & Co | Process for producing agglomerates of finely particulate iron carriers |
US8641799B2 (en) | 2008-09-11 | 2014-02-04 | Siemens Vai Metals Technologies Gmbh | Process for producing agglomerates of finely particulate iron carriers |
RU2524604C1 (en) * | 2013-03-11 | 2014-07-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Device for compacting, mixing and graining of bulk materials |
US11932917B2 (en) | 2017-04-18 | 2024-03-19 | Binding Solutions Ltd | Iron ore pellets |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |