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Patent US4087358A successfully refreshed from Google Patents.
US4087358A
Expired / Lapsed
US
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Augmenting and facilitating flushing in magnetic separation
Assignee: JM Huber Corp
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Filing: 1976-10-12
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Granted: 1978-05-02
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Expires: 1996-10-12
Abstract
Abstract Methods and apparatus for augmenting or facilitating flushing of impurities collected by a porous ferromagnetic matrix. The matrix is contained in a canister, through which an aqueous clay slurry is flowed as an applied field magnetizes the matrix to enable attraction of the discoloring magnetics. The periodic flushing of the matrix is rendered of increased efficacy, by applying auxiliary mechanical forces to dislodge the magnetics; or other disclosed means and methods may be used to facilitate the flushing operation.
Inventors
- 👤 Robin R. Oder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:57
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/032; B01; B01D; B01D35/00; B01D35/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein impurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscious flushing medium consisting of a clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
Claim 2
Dependent Claim
122 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein impurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscious flushing medium consisting of a clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
Claim 3
Dependent Claim
123 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein inpurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscous flushing medium consisting of a thickened clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
Claim 4
Dependent Claim
123 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein inpurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscous flushing medium consisting of a thickened clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
Claim 5
Dependent Claim
123 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein impurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscious flushing medium consisting of a reflocculated clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
Claim 6
Dependent Claim
123 words
In the method for effecting magnetic separation of magnetically attractable particles from a dispersion of said particles in a fluid carrier, by flowing said dispersion through a non-magnetic canister including a porous ferromagnetic matrix while applying a magnetic field to said matrix; and wherein said method includes at least one step wherein impurities collected by said matrix are flushed from the matrix to regenerate same; the improvement comprising: applying auxiliary mechanical forces to dislodge said collected magnetics, thereby augmenting the results achieved in accordance with said flushing step, wherein said auxiliary mechanical forces include augmented drag forces provided by utilizing a viscious flushing medium consisting of a reflocculated clay slurry to thereby increase the viscous forces acting on collected particles within said matrix.
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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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |