GB831240A - Electrostatic method and apparatus for concentrating minerals - Google Patents
Electrostatic method and apparatus for concentrating mineralsInfo
- Publication number
- GB831240A GB831240A GB26817/57A GB2681757A GB831240A GB 831240 A GB831240 A GB 831240A GB 26817/57 A GB26817/57 A GB 26817/57A GB 2681757 A GB2681757 A GB 2681757A GB 831240 A GB831240 A GB 831240A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- particles
- treated
- per inch
- porous member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000011707 mineral Substances 0.000 title abstract 2
- 239000002245 particle Substances 0.000 abstract 8
- 239000007789 gas Substances 0.000 abstract 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000010452 phosphate Substances 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 229910052734 helium Inorganic materials 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000012254 powdered material Substances 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/02—Separators
- B03C7/04—Separators with material carriers in the form of trays, troughs, or tables
Abstract
831,240. Electrostatic separation; concentrating ores. INTERNATIONAL MINERALS & CHEMICAL CORPORATION. Aug. 26, 1957 [Sept. 26, 1956], Nov. 26817/57. Classes 82(1) and 117 A method of separating relatively non- conducting materials such as ore particles, comprises suspending selectively charged particles of the materials in a gaseous stream flowing vertically upwards between electrodes so that particles of like electric charge accumulate adjacent the electrode of opposite charge and are there collected In the apparatus shown in Fig. 1 a circular duct 10 is provided with a porous member 11 above an air inlet 12. Powdered material to be treated is fed on to the porous member from a hopper 15 and is fluidized by air rising through the porous member. The suspended, charged particles come under the influence of the electric field between electrodes 13 and 14 and are thus separated according to their charge. The fluidizing gas stream is preferably heated, e.g. in the range 90F.-500F. for separating phosphate or silica or 850F. when treating sylvinite. The use of a heated gaseous stream is preferred when materials containing excess moisture are treated. The voltage acoss the electrodes may be such as to provide a field gradient of 1000-15,000 volts per inch. The concentration of phosphate ore having a particle size in the range 14-200 mesh is referred to using a field gradient of 3000- 15000 volts per inch, also the separation of sylvinite into its components, the ore having a particle size 28-150 mesh and being treated at a temperature above 200F. using a field gradient of 1500 volts per inch. Other gases such as nitrogen, carbon dioxide or helium may be used as fluidizing media instead of air. In the modification shown in Fig. 3 the treatment chamber is of rectangular horizontal crosssection and two opposite side walls diverge upwardly to give the chamber a larger cross-sectional area at its upper end reducing the speed of particles carried upwardly by the gas stream. Baffles 37, situated in the gas inlet, and 38 and 39, between the electrodes, serve to minimize turbulence of the gas stream Particles attracted to the electrodes 32 and 30 are diverted over wedge-shaped baffles 44 and 45 to their respective receptacles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US831240XA | 1956-09-26 | 1956-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB831240A true GB831240A (en) | 1960-03-23 |
Family
ID=22176331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26817/57A Expired GB831240A (en) | 1956-09-26 | 1957-08-26 | Electrostatic method and apparatus for concentrating minerals |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2899055A (en) |
| GB (1) | GB831240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130923A (en) * | 1982-11-17 | 1984-06-13 | Blue Circle Ind Plc | Electrostatic separation of particulate materials |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3097160A (en) * | 1959-11-30 | 1963-07-09 | Rosen Alfred H | Method of separating differentially heated particles |
| US3109806A (en) * | 1960-05-21 | 1963-11-05 | Kali Forschungsanstalt Gmbh | Electrostatic separator |
| FR1374392A (en) * | 1963-06-27 | 1964-10-09 | Sames Mach Electrostat | Electrostatic sorting process and means for implementing this process |
| FR1398172A (en) * | 1964-03-27 | 1965-05-07 | Sames Mach Electrostat | Electrostatic separation process and installations for implementing this process |
| FR87867E (en) * | 1964-05-21 | 1966-07-08 | Sames Mach Electrostat | Electrostatic sorting process and devices for implementing this process |
| US3493109A (en) * | 1967-08-04 | 1970-02-03 | Consiglio Nazionale Ricerche | Process and apparatus for electrostatically separating ores with charging of the particles by triboelectricity |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE21653E (en) * | 1940-12-10 | Device foe dry separation of pke- | ||
| US2687803A (en) * | 1950-04-17 | 1954-08-31 | Quaker Oats Co | Method and apparatus for the electrostatic separation of corn from its impurities |
| US2738875A (en) * | 1951-03-30 | 1956-03-20 | Int Minerals & Chem Corp | Method and apparatus for electrostatic separation |
| US2738067A (en) * | 1951-03-30 | 1956-03-13 | Int Minerals & Chem Corp | Beneficiating method and apparatus therefor |
| US2787334A (en) * | 1953-11-07 | 1957-04-02 | Linderoth Erik Torvald | Electrostatic dust separators |
-
0
- US US2899055D patent/US2899055A/en not_active Expired - Lifetime
-
1957
- 1957-08-26 GB GB26817/57A patent/GB831240A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130923A (en) * | 1982-11-17 | 1984-06-13 | Blue Circle Ind Plc | Electrostatic separation of particulate materials |
| US4556481A (en) * | 1982-11-17 | 1985-12-03 | Blue Circle Industries Plc | Apparatus for separating particulate materials |
Also Published As
| Publication number | Publication date |
|---|---|
| US2899055A (en) | 1959-08-11 |
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