GB1200633A - Process for forming hard oxide pellets and product thereof - Google Patents
Process for forming hard oxide pellets and product thereofInfo
- Publication number
- GB1200633A GB1200633A GB39519/67A GB3951967A GB1200633A GB 1200633 A GB1200633 A GB 1200633A GB 39519/67 A GB39519/67 A GB 39519/67A GB 3951967 A GB3951967 A GB 3951967A GB 1200633 A GB1200633 A GB 1200633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pellets
- ore
- air
- kiln
- fuel
- 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
- 239000008188 pellet Substances 0.000 title abstract 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 6
- 239000003638 chemical reducing agent Substances 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract 3
- 239000003921 oil Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000004939 coking Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000007323 disproportionation reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000002737 fuel gas Substances 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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)
- Catalysts (AREA)
Abstract
1,200,633. Agglomerating ores. LUMMUS CO. 29 Aug., 1967 [2 Sept., 1966], No. 39519/67. Heading ClA. [Also in Division C5] Metal oxide ore is partially reduced by (i) agglomerating with hydrocarbon oil of 5% boiling point at least 343‹ C., (ii) heating to coke the oil and bake the agglomerates, (iii) heating to harden and effect reduction by residual carbon. Preferably, taconite concentrate (an iron oxide ore) and the oil binder ore preheated to 200- 260‹ C. and pelletized. The pellets are then coked at 370-540‹ C. in an indirectly heated travelling grate kiln and reduced at 815-1205‹ C. in a non-oxidizing atmosphere in a directly heated rotary kiln or travelling grate kiln, e.g. by burning fuel with a deficiency of air. Reduced pellets are cooled in a non-oxidizing atmosphere to 315‹ C. and thereafter in air. In the continuous operation shown (wherein temperatures are given in ‹ F.) ore and recycled undersize material are preheated in a fluidized bed and pelletized. The pellets are heated prior to coking in an indirectly heated furnace which may be a separate portion of the coking kiln. Before reduction the coked pellets are calcined in an indirectly heated travelling grate kiln. Fuel gas and fuel oil fractions are recovered from the coker distillate and used as fuel for the reducer. The reducer effluent supplies heat to the calciner, coker and preheater, and then preheats air (which is mainly supplied to the reducer) and is further water cooled before use in cooling finished pellets. The reheated gas is burnt with cold air and used to generate steam and preheat incoming air in a boiler. In alternative embodiments, agglomerates are formed by briquetting or extruding. Limestone may be added during the mixing and the products may contain up to 5 wt. per cent CaO. The product pellets are porous and may contain at least 70% FeO, less than 1% free carbon and 0-5% metallic iron; if cooling is slow, disproportionation of FeO may yield a metallic iron content of 20%. The combined oxygen in the ore is preferably reduced by 15-40 wt. per cent and the preferred oxygen: iron weight ratio in the product is 0À15-0À34.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57705566A | 1966-09-02 | 1966-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1200633A true GB1200633A (en) | 1970-07-29 |
Family
ID=24307100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39519/67A Expired GB1200633A (en) | 1966-09-02 | 1967-08-29 | Process for forming hard oxide pellets and product thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3420656A (en) |
| BE (1) | BE745648Q (en) |
| DE (1) | DE1583183A1 (en) |
| GB (1) | GB1200633A (en) |
| SE (1) | SE319499B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2154223A (en) * | 1983-12-06 | 1985-09-04 | Laborlux Sa | Method of hot briquetting fine-grained substances and of further treating the hot briquettes |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3607217A (en) * | 1968-12-11 | 1971-09-21 | Exxon Research Engineering Co | Agglomeration of particulate metals |
| US3642465A (en) * | 1969-06-16 | 1972-02-15 | Lummus Co | Process for the production of highly prereduced oxide pellets |
| US3753683A (en) * | 1970-12-28 | 1973-08-21 | Dravo Corp | Method and apparatus for carbonizing and desulfurizing coal-iron compacts |
| US3844765A (en) * | 1971-03-01 | 1974-10-29 | J Baum | Direct reduction method using inductive heating |
| US3865574A (en) * | 1972-07-20 | 1975-02-11 | Lummus Co | Process for the production of low-sulfur prereduced iron pellets |
| JPS4964503A (en) * | 1972-10-25 | 1974-06-22 | ||
| BR0106149A (en) * | 2001-12-17 | 2003-09-23 | Samarco Mineracao Sa | Iron ore pellets with reduced abrasion, bonding, degradation and dust emission, and their manufacturing process |
| WO2007124781A1 (en) * | 2006-04-26 | 2007-11-08 | Thyssenkrupp Steel Ag | Hot dip coating process for a steel plate product made of high strengthheavy-duty steel |
| WO2007134725A2 (en) * | 2006-05-24 | 2007-11-29 | Saudi Basic Industries Corporation | Process for recycling of steel industry iron-bearing by-products by treating pellets in direct reduction furnaces |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2812249A (en) * | 1954-12-23 | 1957-11-05 | Gulf Research Development Co | Carbon impregnated solids and method of preparing the same |
| US2918364A (en) * | 1957-10-30 | 1959-12-22 | Lesher And Associates Inc | Method of forming pellets of finely divided coked carbonaceous material and finely divided non-fusing material |
| US3118757A (en) * | 1960-03-31 | 1964-01-21 | Renault | Method and means for preheating ferrous oxide |
| US3264092A (en) * | 1963-06-20 | 1966-08-02 | Mcdowell Wellman Eng Co | System for producing carbonized and metallized iron ore pellets |
| US3341322A (en) * | 1965-02-25 | 1967-09-12 | Exxon Research Engineering Co | Reduction of oxidic iron ores |
| US3351459A (en) * | 1965-08-16 | 1967-11-07 | Phillips Petroleum Co | Pelleting iron ore fines |
-
1966
- 1966-09-02 US US577055A patent/US3420656A/en not_active Expired - Lifetime
-
1967
- 1967-06-26 SE SE9134/67*A patent/SE319499B/xx unknown
- 1967-08-29 GB GB39519/67A patent/GB1200633A/en not_active Expired
- 1967-08-31 DE DE19671583183 patent/DE1583183A1/en active Pending
-
1970
- 1970-02-06 BE BE745648A patent/BE745648Q/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2154223A (en) * | 1983-12-06 | 1985-09-04 | Laborlux Sa | Method of hot briquetting fine-grained substances and of further treating the hot briquettes |
| FR2561257A1 (en) * | 1983-12-06 | 1985-09-20 | Laborlux Sa | PROCESS FOR HOT AGGLOMERATION OF FINE GRAIN SUBSTANCES, AND FOR SUBSEQUENT TREATMENT OF HOT AGGLOMERS |
Also Published As
| Publication number | Publication date |
|---|---|
| US3420656A (en) | 1969-01-07 |
| SE319499B (en) | 1970-01-19 |
| DE1583183A1 (en) | 1972-04-06 |
| BE745648Q (en) | 1970-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |