Method for producing pellets
Abstract
Abstract THE INVENTION PROVIDES A METHOD FOR PRODUCING PELLETS FROM A FINELY DIVIDED MATERIAL, SUCH AS FINE IRON ORE. THE METHOD COMPRISES ROLLING NUCLEI OR SEEDS OF INORGANIC COLLOIDAL BINDER AND WATER ON A TUMBLING BED OF SAID MATERIAL, MOVING ALONG A CLOSED LOOP OR STRAIGHT PATH, WHEREBY PARTICLES OF THIS MATERIAL MAY AGGLOMERATE IN LAYERS ON THE NUCLEI TO FORM PELLETS OF GRADUALLY INCREASING SIZE, AND, WHILE THE PELLETS KEEP ROLLING ON THE BED, PERIODICALLY HARDENING THE BINDER IN A PERIPHERAL REGION OF EACH PELLET TO LIMIT OUTWARD DRIFT OF THE BINDER AS THE PELLETS BECOME LARGER, AND IMMEDIATELY AFTER EACH BINDER HARDENING OPERATION, MOISTENING THE PELLETS SO THAT THEY MAY AGGLOMERATE FURTHER LAYERS OF MATERIAL PARTICLES, AND UPON REACHING THE DESIRED SIZE, DISCHARGING THE PELLETS AND FULLY DRYING THEM TO CAUSE THE BINDER CONTAINED THEREIN TO SET THROUGHOUT. THE APPARATUS IS DESIGNED TO CARRY OUT THE ABOVE METHOD.
Inventors
- 👤 Claude Gentaz
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |