US5035365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thortveitite ore beneficiation process
Assignee: Boulder Scientific Co
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Filing: 1990-02-15
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Granted: 1991-07-30
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Expires: 2010-02-15
Abstract
Abstract A thorteveitite ore beneficiation process which comprises comminuting the ore by wet autogenuous grinding to substantially liberate the thortveitite contained therein, and passing the comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing, the concentrate containing a substantially greater percentage of thortveitite than the ore.
Inventors
- 👤 Scott D. Birmingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:42
CPC Classifications
C; C22; C22B; C22B1/00; B; B03; B03C; B03C1/00; B03C1/02; B03C1/035
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
47 words
A thortveitite ore beneficiation process which comprises (i) comminuting said ore to substantially liberate the thortveitite contained therein (ii) passing said comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing said concentrate containing a substantially greater percentage of thortveitite than said ore.
Claim 2
Dependent Claim
47 words
A thortveitite ore beneficiation process which comprises (i) comminuting said ore to substantially liberate the thortveitite contained therein (ii) passing said comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing said concentrate containing a substantially greater percentage of thortveitite than said ore.
Claim 3
Dependent Claim
23 words
A process as defined by claim 1 in which said ore is comminuted to an average particle size of less than 10 mesh.
Claim 4
Dependent Claim
26 words
A process as defined by claim 2 in which said ore is comminuted to an average particle size of from about 8 to about 30 mesh.
Claim 5
Dependent Claim
13 words
A process as defined by claim 1 in which the ore is deslimed.
Claim 6
Dependent Claim
17 words
A process as defined by claim 1 in which said ore is deslimed prior to step 1.
Claim 7
Dependent Claim
22 words
A process as defined by claim 1 in which said ore is deslimed after comminuting step (i) and prior to step (ii).
Claim 8
Dependent Claim
24 words
A process as defined by claim 1 in which said concentrate is recycled at least once through step (ii) to produce a second concentrate.
Claim 9
Dependent Claim
19 words
A process as defined by claim 1 in which said tailing is recycled at least once through step (ii).
Claim 10
Dependent Claim
31 words
A process for separating thortveitite from admixture with nonmagnetic impurities which comprises passing said admixture through a nonuniform magnetic field to produce a thortveitite concentrate and a tailing comprising said impurities.
Claim 11
Dependent Claim
31 words
A process for separating thortveitite from admixture with nonmagnetic impurities which comprises passing said admixture through a nonuniform magnetic field to produce a thortveitite concentrate and a tailing comprising said impurities.
Claim 12
Dependent Claim
18 words
A process as defined by claim 9 in which said admixture is a thortveitite ore froth flotation concentrate.
Claim 13
Dependent Claim
51 words
A thortveitite ore beneficiation process which comprises (i) comminuting said ore by wet autogenuous grinding to substantially liberate the thortveitite contained therein, (ii) passing said comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing, said concentrate containing a substantially greater percentage of thortveitite than said ore.
Claim 14
Dependent Claim
51 words
A thortveitite ore beneficiation process which comprises (i) comminuting said ore by wet autogenuous grinding to substantially liberate the thortveitite contained therein, (ii) passing said comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing, said concentrate containing a substantially greater percentage of thortveitite than said ore.
Claim 15
Dependent Claim
23 words
A process as defined by claim 11 in which said ore is comminuted to an average particle size of less than 10 mesh.
Claim 16
Dependent Claim
26 words
A process as defined by claim 12 in which said ore is comminuted to an average particle size of from about 8 to about 30 mesh.
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) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |