US3203761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of lime
Assignee: Kimberly Clark Corp
•
Filing: 1962-02-05
•
Granted: 1965-08-31
•
Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Stewart M Neuville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:54
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN THE SULFATE PULPING PROCESS, AN IMPROVED METHOD FOR REPROCESING TO SLAKEABLE LIME THE LIME-BEARING SLUDGE OBTAINED FROM CAUSTICIZING GREEN LIQUOR WHICH COMPRISES STARTING WITH UNWASHED LIME-BEARING SLUDGE AS DISCHARGED FROM THE CLARIFIER AND CONTAINING AN APPRECIABLE AMOUNT OF SODA, ADJUSTING THE CONSISTENCY OF SAID SLUDGE TO A SOLIDS CONTENT OF ABOUT 75% TO 80% BY WEIGHT, PELLETIZING SAID THICKENED SLUDGE TO FORM PELLETS RANGING IN SIZE FROM ABOUT 1/4" TO 3/8" IN DIAMETER, FORMING A MOVING BED OF PELLETS THEREFROM, PASSING FIRST STREAM OF GAS HEATED TO ABOUT 600*F. TO 800*F. THROUGH SAID MOVING BED SUBSTANTIALLY TO DRY SAID PELLETS, THEN PASSING A SECOND STREAM OF GAS HEATED TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 2100*F. TO 2400*F. THROUGH SAID BED OF PELLETS, SAID SECOND STREAM OF GAS BEING SUFFICIENTLY HOT TO RAISE THE TEMPERATURE OF SAID PELLETS TO DISASSOCIATION TEMPERATURE WHEREBY THE PELLETS ARE CALCINED TO LIME SUITABLE FOR SLAKING.
Claim 2
Dependent Claim
153 words
IN THE SULFATE PULPING PROCESS, AN IMPROVED METHOD FOR REPROCESING TO SLAKEABLE LIME THE LIME-BEARING SLUDGE OBTAINED FROM CAUSTICIZING GREEN LIQUOR WHICH COMPRISES STARTING WITH UNWASHED LIME-BEARING SLUDGE AS DISCHARGED FROM THE CLARIFIER AND CONTAINING AN APPRECIABLE AMOUNT OF SODA, ADJUSTING THE CONSISTENCY OF SAID SLUDGE TO A SOLIDS CONTENT OF ABOUT 75% TO 80% BY WEIGHT, PELLETIZING SAID THICKENED SLUDGE TO FORM PELLETS RANGING IN SIZE FROM ABOUT 1/4" TO 3/8" IN DIAMETER, FORMING A MOVING BED OF PELLETS THEREFROM, PASSING FIRST STREAM OF GAS HEATED TO ABOUT 600*F. TO 800*F. THROUGH SAID MOVING BED SUBSTANTIALLY TO DRY SAID PELLETS, THEN PASSING A SECOND STREAM OF GAS HEATED TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 2100*F. TO 2400*F. THROUGH SAID BED OF PELLETS, SAID SECOND STREAM OF GAS BEING SUFFICIENTLY HOT TO RAISE THE TEMPERATURE OF SAID PELLETS TO DISASSOCIATION TEMPERATURE WHEREBY THE PELLETS ARE CALCINED TO LIME SUITABLE FOR SLAKING.
References Cited (Backward Citations)
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US2178586A
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US2167120A
Cited
US2214345A
Cited
US2283758A
Cited
US2465410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |