US3226188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of aluminum sulfate melt
Assignee: BK Giulini Chemie GmbH
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Filing: 1961-10-10
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Granted: 1965-12-28
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Expires: 1981-10-10
Abstract
No abstract record available.
Inventors
- 👤 Ruter Hermann
- 👤 Cherdron Egon
- 👤 Fassle Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:07
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/68; C01F7/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
PROCESS FOR THE PRODUCTION OF ALUMINUM SULFATE MELT HAVING A CONTENT OF FROM ABOUT 14 TO 20% BY WEIGHT OF AL2O3 BY THE REACTION UNDER PRESSURE OF ALUMINUM HYDROXIDE WIH SULFURIC ACID HAVING A CONCENTRATION CORRESPONDING TO THE DESIRED AL2O3 CONTENT IN THE PRODUCED ALUMINUM SULFATE MELT WHICH COMPRISES COMBINING SULFURIC ACID, WHICH HAS A CONCENTRATIONN SORRESPONDING TO SUCH DESIRED AL2O3 CONTENT IN THE ALUMINUMSULFATE MELT TO BE PRODUCED, AT A TEMPERATURE OF BETWEN ABOUT 30 AND 50 DEGREES C. WITH ALUMINUM HYDROXIDE IN A REACTION ZONE OVER A PERIOD OF FROM ABOUT 30 TO 120 SECONDS, INTENSIVELY COMPLETELY INTERMIXING THE ALUMINUM HYDROXIDE WITHTEH SULFURIC ACID IMMEDIATELY AFTER SAID COMBINING FOR A PERIOD OF ABOUT 60 TO 300 SECONDS UNTIL THE EXOTHERMIC REACTION IS INITIATED, AND THEREFATER CARRYING OUT THE REACTION OF THE MIXTURE OF ALUMINUM HYDROXIDE AND SULFURIC ACID IN SAID REACTION ZONE UNDER AUTOGENOUS PRESSURE WHILE MAINTAINING THE TEMPERATURE OF THE REACTION MIXTURE WITHIN THE RANGE OF FROM ABOUT 150 TO 200 DEGREES C. AND CONTINUING THE INTENSIVE INTERMIXING, THE INTENSIVE INTERMIXING BEING CONTNUED THROUGHOUT THE REACTION AND BEING CARRIED OUT FOR A PERIOD OF ABOUT AT LEAST 10 AND AT MOST 60 MINUTES.
Claim 2
Dependent Claim
196 words
PROCESS FOR THE PRODUCTION OF ALUMINUM SULFATE MELT HAVING A CONTENT OF FROM ABOUT 14 TO 20% BY WEIGHT OF AL2O3 BY THE REACTION UNDER PRESSURE OF ALUMINUM HYDROXIDE WIH SULFURIC ACID HAVING A CONCENTRATION CORRESPONDING TO THE DESIRED AL2O3 CONTENT IN THE PRODUCED ALUMINUM SULFATE MELT WHICH COMPRISES COMBINING SULFURIC ACID, WHICH HAS A CONCENTRATIONN SORRESPONDING TO SUCH DESIRED AL2O3 CONTENT IN THE ALUMINUMSULFATE MELT TO BE PRODUCED, AT A TEMPERATURE OF BETWEN ABOUT 30 AND 50 DEGREES C. WITH ALUMINUM HYDROXIDE IN A REACTION ZONE OVER A PERIOD OF FROM ABOUT 30 TO 120 SECONDS, INTENSIVELY COMPLETELY INTERMIXING THE ALUMINUM HYDROXIDE WITHTEH SULFURIC ACID IMMEDIATELY AFTER SAID COMBINING FOR A PERIOD OF ABOUT 60 TO 300 SECONDS UNTIL THE EXOTHERMIC REACTION IS INITIATED, AND THEREFATER CARRYING OUT THE REACTION OF THE MIXTURE OF ALUMINUM HYDROXIDE AND SULFURIC ACID IN SAID REACTION ZONE UNDER AUTOGENOUS PRESSURE WHILE MAINTAINING THE TEMPERATURE OF THE REACTION MIXTURE WITHIN THE RANGE OF FROM ABOUT 150 TO 200 DEGREES C. AND CONTINUING THE INTENSIVE INTERMIXING, THE INTENSIVE INTERMIXING BEING CONTNUED THROUGHOUT THE REACTION AND BEING CARRIED OUT FOR A PERIOD OF ABOUT AT LEAST 10 AND AT MOST 60 MINUTES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |