Potash granulation
Abstract
Abstract PARTICULATE POTASH IS GRANULATED IN A PAN GRANULATOR. THE MOIST GRANULES FROM THE PAN ARE MIXED WITH WARM RECYCLED DRY GRANULES AND TUMBLED IN A ROTATING DRUM WHEREBY THE GRANULES BECOME EQUILIBRATED IN BOTH MOISTURE CONTENT AND TEMPERATURE. THE EQUILIBRATED GRANULES ARE DRIED IN A FLUID BED DRYER AND SIZED BY SCREENING. THE OVERSIZE AND UNDERSIZE GRANULES ARE RECYCLED, VIA A PULVERIZER, TO THE PAN AND THE PRODUCT SIZE GRANULES GO TO STORAGE. THE RECYCLED DRY GRANULES ARE EITHER TAKEN FROM THE DRYER DISCHARGE OR FROM THE PRODUCT SIZE GRANULES GOING TO STORAGE. THE FINAL PRODUCT IS A GRANULATED POTASH OF IMPROVED BULK DENSITY, HARDNESS AND GRANULE SHAPE WHICH IS SUITABLE FOR USE IN BULK BLEND FERTILIZERS.
Inventors
- 👤 H Cormode
- 👤 Gowan J Mc
- 👤 C Kirby
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |