Patent US2999747A successfully refreshed from Google Patents.
US2999747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating refractory ores for the recovery of values therefrom
Assignee: RADIO LOGICAL RES INST Inc
•
Filing: 1958-10-28
•
Granted: 1961-09-12
•
Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Anthony R Ronzio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:26
CPC Classifications
C; C22; C22B; C22B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF RECOVERING METAL VALUES FROM REFRACTORY ORES WHICH COMPRISES THE STEPS OF REACTING TOGETHER A CARBONACEOUS REDUCING AGENT AND A STRONG OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES, ALKALI METAL PERSULPHATES AND ALKALI METAL PEROXIDES IN THE PRESENCE OF THE REFRACTORY ORE, THE OXIDIZING AGENT AND AMOUNT THEREOF BEING SELECTED TO REACT WITH THE CARBONACEOUS REDUCING AGENT TO FORM AN ALKALI METAL CARBONATE AND HEAT, THE HEAT OF REACTION BEING OPERATIVE TO FUSE THE ALKALI METAL CARBONATE, REACTING THE FUSED ALKALI METAL CARBONATE WITH THE ORE AT AN ELEVATED TEMPERATURE, THE ELEVATED TEMPERATURE BEING DUE TO THE HEAT OF REACTION, TO PRODUCE AN INSOLUBLE METALLIC CARBONATE AND SOLUBLE ALKALI COMPOUND, AND THEREAFTER LEACHING TO SEPARATE THE SOLUBLE ALKALI COMPOUND AND INSOLUBLE METALLIC CARBONATE.
Claim 2
Independent Claim
129 words
A METHOD OF RECOVERING METAL VALUES FROM REFRACTORY ORES WHICH COMPRISES THE STEPS OF REACTING TOGETHER A CARBONACEOUS REDUCING AGENT AND A STRONG OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES, ALKALI METAL PERSULPHATES AND ALKALI METAL PEROXIDES IN THE PRESENCE OF THE REFRACTORY ORE, THE OXIDIZING AGENT AND AMOUNT THEREOF BEING SELECTED TO REACT WITH THE CARBONACEOUS REDUCING AGENT TO FORM AN ALKALI METAL CARBONATE AND HEAT, THE HEAT OF REACTION BEING OPERATIVE TO FUSE THE ALKALI METAL CARBONATE, REACTING THE FUSED ALKALI METAL CARBONATE WITH THE ORE AT AN ELEVATED TEMPERATURE, THE ELEVATED TEMPERATURE BEING DUE TO THE HEAT OF REACTION, TO PRODUCE AN INSOLUBLE METALLIC CARBONATE AND SOLUBLE ALKALI COMPOUND, AND THEREAFTER LEACHING TO SEPARATE THE SOLUBLE ALKALI COMPOUND AND INSOLUBLE METALLIC CARBONATE.
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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |