US3244512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrometallurgical iron process
Assignee: Alberta Innovates
•
Filing: 1963-07-01
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Granted: 1966-04-05
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Gravenor Courad Percival
- 👤 Govett Gerald James
- 👤 Rigg Tson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:06
CPC Classifications
C; C01; C01G; C01G1/00; C01G1/06; C22; C22B; C22B3/00; C22B3/04; C22B3/06; C22B3/10; C22B3/20; C22B3/22; C22B3/44; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A HYDROMETALLURGICAL METHOD FOR SELECTIVELY REMOVING IRON FROM IRON COMPOUND CONTAINING SUBSTANCES COMPRISING: CONVERTING A PORTION OF AN IRON COMPOUND IN SAID SUBSTANCES TO METALLIC FORM; LEACHING SAID SUBSTANCES INCLUDING THE CONVERTED PORTION THEREOF IN AQUEOUS HYDROCHLORIC ACID TO DISSOLVE AT LEAST THE IRON OF SAID PORTION THEREOF AND THE CORRESPONDING COMPOUND OF SAID IRON ON SAID SUBSTANCES TO FORM IRON CHLORIDES IN SOLUTION; FILTERING SAID CHLORIDES IN SOLUTION TO SEPARATE THE SOLIDS NOT IN SOLUTION THEREFROM; SELECTIVELY CRYSTALLIZING FROM SAID CHLORIDES IN SOLUTION, CHLORIDE CRYSTALS OF THE THUS SELECTED IRON; WITHDRAWING THE LIQUOR CONTAINING ANY OTHER CHLORIDES IN SOLUTION FROM SAID CRYSTALS; AND CONVERTING SAID IRON CHLORIDE CRYSTALS TO METALLIC FORM IN THE PRESENCE OF HYDROGEN AT LESS THAN MELTING TEMPERATURE OF SAID METAL WHILE HEATING SAID CHLORIDE CRYSTALS TO LESS THAN MELTING TEMPERATURE THEREOF.
Claim 2
Dependent Claim
136 words
A HYDROMETALLURGICAL METHOD FOR SELECTIVELY REMOVING IRON FROM IRON COMPOUND CONTAINING SUBSTANCES COMPRISING: CONVERTING A PORTION OF AN IRON COMPOUND IN SAID SUBSTANCES TO METALLIC FORM; LEACHING SAID SUBSTANCES INCLUDING THE CONVERTED PORTION THEREOF IN AQUEOUS HYDROCHLORIC ACID TO DISSOLVE AT LEAST THE IRON OF SAID PORTION THEREOF AND THE CORRESPONDING COMPOUND OF SAID IRON ON SAID SUBSTANCES TO FORM IRON CHLORIDES IN SOLUTION; FILTERING SAID CHLORIDES IN SOLUTION TO SEPARATE THE SOLIDS NOT IN SOLUTION THEREFROM; SELECTIVELY CRYSTALLIZING FROM SAID CHLORIDES IN SOLUTION, CHLORIDE CRYSTALS OF THE THUS SELECTED IRON; WITHDRAWING THE LIQUOR CONTAINING ANY OTHER CHLORIDES IN SOLUTION FROM SAID CRYSTALS; AND CONVERTING SAID IRON CHLORIDE CRYSTALS TO METALLIC FORM IN THE PRESENCE OF HYDROGEN AT LESS THAN MELTING TEMPERATURE OF SAID METAL WHILE HEATING SAID CHLORIDE CRYSTALS TO LESS THAN MELTING TEMPERATURE THEREOF.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |