US3595386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for beneficiation of nonmagnetic material
Assignee: Individual
•
Filing: 1969-01-27
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Granted: 1971-07-27
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Expires: 1989-01-27
Abstract
Abstract A novel process for beneficiating nonmagnetic ores and other source materials, particularly lean iron ores, wherein paramagnetic material in such ores is given a temporary positive magnetic susceptibility, passed within the field of a moving permanent magnet system before the material decays to its natural state, and the so activated paramagnetic substance separated by deflection toward the magnet system and recovered from nondeflected diamagnetic material in admixture therewith.
Inventors
- 👤 Joseph R Hradel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/26; B03C1/002; B03C1/005; B03C1/025; B03C1/10; B03C1/12; B03C2201/00; B03C2201/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A process for separating nonmagnetic paramagnetic material from diamagnetic material which comprises: a. providing a finely divided mixture of paramagnetic and diamagnetic material, said mixture being further characterized as being not naturally magnetic, b. passing said mixture within the effective range of an electrically energized upset coil thereby upsetting said mixture and imparting a temporary positive magnetic susceptibility to said paramagnetic material of said mixture and a negative magnetic susceptibility to said diamagnetic material of said mixture, said temporary positive and negative magnetic susceptibilities existing in said materials for a period of time of from less than 1 second up to about several minutes c. bringing the so upset mixture within the field of a moving permanent magnet system within the time interval that the paramagnetic material retains its temporary positive magnetic susceptibility and is attracted and deflected towards said magnet system, and d. recovering the so deflected paramagnetic material.
Claim 2
Dependent Claim
150 words
A process for separating nonmagnetic paramagnetic material from diamagnetic material which comprises: a. providing a finely divided mixture of paramagnetic and diamagnetic material, said mixture being further characterized as being not naturally magnetic, b. passing said mixture within the effective range of an electrically energized upset coil thereby upsetting said mixture and imparting a temporary positive magnetic susceptibility to said paramagnetic material of said mixture and a negative magnetic susceptibility to said diamagnetic material of said mixture, said temporary positive and negative magnetic susceptibilities existing in said materials for a period of time of from less than 1 second up to about several minutes c. bringing the so upset mixture within the field of a moving permanent magnet system within the time interval that the paramagnetic material retains its temporary positive magnetic susceptibility and is attracted and deflected towards said magnet system, and d. recovering the so deflected paramagnetic material.
Claim 3
Dependent Claim
19 words
The process as defined in claim 1 wherein the upSet material is passed through said electrically energized upset coil.
Claim 4
Dependent Claim
24 words
The process as defined in claim 2 wherein the upset mixture is passed adjacent to a rotating system of a plurality of permanent magnets.
Claim 5
Dependent Claim
41 words
The process as defined in claim 3 wherein the mixture comprises nonmagnetic iron source material and the time interval between upset and passage within the field of said moving magnet system ranges from less than one second to about one minute.
Claim 6
Dependent Claim
48 words
The process as defined in claim 4 wherein the iron source material is a lean iron ore or tailings resulting from conventional ore processing operations, said material being substantially free from naturally magnetic substances and said material ranging from about 60 to about 325 mesh U.S. Standard Sieve.
Claim 7
Dependent Claim
38 words
The process as defined in claim 5 wherein the iron source material is provided as an aqueous slurry and including the step of pumping said slurry through said energized coil and adjacent said rotating system of permanent magnets.
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |