Patent US3759385A successfully refreshed from Google Patents.
US3759385A
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Method and apparatus for separating mixtures of fine grain materials
Assignee: Cribla SA
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Filing: 1970-06-17
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Granted: 1973-09-18
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Expires: 1990-06-17
Abstract
Abstract Installation for separating a mixture of particles of two different materials, one of which materials has an affinity for a gas into fractions in which with a cylindrical tank in one wall having a centrally positioned inlet stub for a mixture of the materials for separation, in the other end wall of the tank a centrally disposed outlet for part of the liquid together with one fraction of the mixture, a tangential liquid inlet stub near the central inlet stub and a tangential outlet stub near the other end wall thereof, said outlet stub adapted for discharging the part of the liquid together with the other fraction of the mixture and there being means for commingling the gas with the liquid introduced.
Inventors
- 👤 E Pouillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:45
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/32; B03B5/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A method of separating a mixture of particles of two different materials, only one of which materials has an affinity for a gas, which comprises the steps of: a. feeding the mixture into one end of an elongate chamber in axial direction; b. tangentially introducing liquid into said one end of the chamber; c. tangentially withdrawing liquid and material particles from the other end of said chamber; d. axially withdrawing liquid and material particles from said other end of said chamber; and e. during step (b), commingling said gas with the liquid introduced so that the material particles withdrawn in step (d) are of said one material and the material particles withdrawn in step (c) are of the other material.
Claim 2
Independent Claim
120 words
A method of separating a mixture of particles of two different materials, only one of which materials has an affinity for a gas, which comprises the steps of: a. feeding the mixture into one end of an elongate chamber in axial direction; b. tangentially introducing liquid into said one end of the chamber; c. tangentially withdrawing liquid and material particles from the other end of said chamber; d. axially withdrawing liquid and material particles from said other end of said chamber; and e. during step (b), commingling said gas with the liquid introduced so that the material particles withdrawn in step (d) are of said one material and the material particles withdrawn in step (c) are of the other material.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |