Patent US2863395A successfully refreshed from Google Patents.
Patent US3096152A successfully refreshed from Google Patents.
US3096152A
Expired / Lapsed
US
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Process for removal of sulfate from magnesium chloride brines
Assignee: STANDARD MAGNESIUM CORP Inc
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Filing: 1961-01-10
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Granted: 1963-07-02
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Expires: 1981-01-10
Abstract
No abstract record available.
Inventors
- 👤 Hadzeriga Pablo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:05
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/26; C01F5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A PROCESS FOR REMOVING SULFATE IONS FROM MAGNESIUM CHLORIDE BRINES CONTAINING A SIGNIFICANT QUANTITY OF SAID IONS AS WELL AS IONS OF AT LEAST ONE ALKALI METAL SELECTED FROM THE GROUP OF ALKALI METALS CONSISTING OF POTASSIUM AND SODIUM, COMPRISING FIRST SAMPLING AND ANALYZING SUCH A BRINE TO DETERMINE THE MOLAR RATIO OF IONS OF SAID AT LEAST ONE ALKALI METAL TO SULFATE IONS, AND, IF SAID RATIO IS LESS THAN ONE, ADDING TO SAID BRINE A MATERIAL WHICH WILL SUPPLY A SUFFICIENT QUANTITY OF IONS OF THE ONE ALKALI METAL CONCERNED TO RAISE SAID RATIO TO AT LEAST ONE; THEN, WHILE AGITATING THE BRINE, GRADUALLY ADDING AT LEAST THE STIOCHIOMETIC AMOUNT OF AN UNSATURATED, AQUEOUS SOLUTION OF CALCIUM CHLORIDE TO REACT WITH THE SULFATE PRESENT TO PRODUCE CRYSTALS OF GYPSUM; SUBJECTING THE RESULTING BRINE AND TYPSUM CRYSTAL SLURRY, ESSENTIALLY WITHOUT SOLIDS SEPARATIONS, TO EVAPORATION UNTIL SATURATED WITH RESPECT TO A CHLORIDE OF SAID AT LEAST ONE ALKALI METAL, AND WITH RE-
Claim 2
Dependent Claim
162 words
A PROCESS FOR REMOVING SULFATE IONS FROM MAGNESIUM CHLORIDE BRINES CONTAINING A SIGNIFICANT QUANTITY OF SAID IONS AS WELL AS IONS OF AT LEAST ONE ALKALI METAL SELECTED FROM THE GROUP OF ALKALI METALS CONSISTING OF POTASSIUM AND SODIUM, COMPRISING FIRST SAMPLING AND ANALYZING SUCH A BRINE TO DETERMINE THE MOLAR RATIO OF IONS OF SAID AT LEAST ONE ALKALI METAL TO SULFATE IONS, AND, IF SAID RATIO IS LESS THAN ONE, ADDING TO SAID BRINE A MATERIAL WHICH WILL SUPPLY A SUFFICIENT QUANTITY OF IONS OF THE ONE ALKALI METAL CONCERNED TO RAISE SAID RATIO TO AT LEAST ONE; THEN, WHILE AGITATING THE BRINE, GRADUALLY ADDING AT LEAST THE STIOCHIOMETIC AMOUNT OF AN UNSATURATED, AQUEOUS SOLUTION OF CALCIUM CHLORIDE TO REACT WITH THE SULFATE PRESENT TO PRODUCE CRYSTALS OF GYPSUM; SUBJECTING THE RESULTING BRINE AND TYPSUM CRYSTAL SLURRY, ESSENTIALLY WITHOUT SOLIDS SEPARATIONS, TO EVAPORATION UNTIL SATURATED WITH RESPECT TO A CHLORIDE OF SAID AT LEAST ONE ALKALI METAL, AND WITH RE-
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) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |