US485842A - Method of magnetic-ore separation - Google Patents
Method of magnetic-ore separation Download PDFInfo
- Publication number
- US485842A US485842A US485842DA US485842A US 485842 A US485842 A US 485842A US 485842D A US485842D A US 485842DA US 485842 A US485842 A US 485842A
- Authority
- US
- United States
- Prior art keywords
- magnetic
- pyrrhotite
- nickeliferous
- pyrites
- ore
- 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 - Lifetime
Links
- 238000000926 separation method Methods 0.000 title 2
- 229910052952 pyrrhotite Inorganic materials 0.000 description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- 239000012141 concentrate Substances 0.000 description 12
- 239000006148 magnetic separator Substances 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 229910052759 nickel Inorganic materials 0.000 description 10
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 8
- 229910052803 cobalt Inorganic materials 0.000 description 8
- 239000010941 cobalt Substances 0.000 description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- -1 blende Inorganic materials 0.000 description 2
- 229910052949 galena Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229910052904 quartz Inorganic materials 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
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
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
Definitions
- the object of this invention is to produce an effective and economical method for the treatment of low-grade nickeliferous pyritous ores, so as to recover the nickel therefrom and also the cobalt, gold, copper, and other metals or metallic ores that may be present.
- pyrrhotite is nickeliferous, as it usually is to a more or less extent, the nickel is not distributed generally throughout the Whole body of the pyrrhotite, but certain crystals are pure pyrrhotite or magnetic pyrites, while other crystals have some of the iron replaced by nickel and sometimes by cobalt, and that the crystals containing the nickel or cobalt are considerably-less magnetic than the pure pyrrhotite.
- This concentrate is then passed through a magnetic separator which is capable of working wet ores, or the concentrate isdried and passed through a magnetic separator adapted to work dry ores.
- the magnetism is so regulated that only the particles of magnetic pyrites which contain no nickel or cobalt are acted upon, the magnetism being too weak to draw away the less magnetic or nickeliferous pyrrhotite.
- the pure pyrrhotite has thus been separated the remainder of the concentrate is run through a more powerful magnetic separator, which withdraws the nickeliferous pyrrhotite, leaving all the other or non-magnetic materials.
- the remainder of the concentrate is then roasted in a closed cylinder with slight access of air, it desirable, to render the copper pyrites magnetic, when the magnetic copper pyrites may be withdrawn from the rest of the material by a magnetic separator, as explained in my patent, No.465,250. After the copper pyrites have been withdrawn from the concentrate the remainder, containing the gold, silver, zinc, lead, &c., of the original ore, is worked in the wet way or matted and worked electrolytically, as will be well understood.
- What I claim is- 1.
Description
UNITED STATES PATENT OFFICE.
THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY.
METHOD OF MAGNETIC-ORE SEPARATION.
SPECIFICATION forming part of Letters Patent No. 485,842, dated November 8, 1892.
Application filed July 20, 1892. Serial No. 4%,637. (N0 specimen.)
To all whom it may concern:
Be it known that I, THOMAS A. EDISON, a citizen of the United States, residing at Llewellyn Park, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Treating Ores,
(Case No. 958,) of which the following is a specification.
The object of this invention is to produce an effective and economical method for the treatment of low-grade nickeliferous pyritous ores, so as to recover the nickel therefrom and also the cobalt, gold, copper, and other metals or metallic ores that may be present.
I have discovered that where magnetic pyrites, called pyrrhotite, is nickeliferous, as it usually is to a more or less extent, the nickel is not distributed generally throughout the Whole body of the pyrrhotite, but certain crystals are pure pyrrhotite or magnetic pyrites, while other crystals have some of the iron replaced by nickel and sometimes by cobalt, and that the crystals containing the nickel or cobalt are considerably-less magnetic than the pure pyrrhotite.
In carryingout myinvention I proceed as follows,assuming the ore to contain nickeliferous pyrrhotite or magnetic pyrites, chalco-pyrites or copper pyrites, withgold, &c: I first grind the Whole of the crude ore, so as to eliminate the pyrrhotite, gold, &c., from the worthless gangue. The crushed ore is then concentrated by jigging orvanning orby anyotherappropriate concentrating method, thus giving a concentrate containing the nickeliferous pyrrhotite, gold, blende, and galena without any material quantity of quartz or other worthless matter. This concentrate is then passed through a magnetic separator which is capable of working wet ores, or the concentrate isdried and passed through a magnetic separator adapted to work dry ores. The magnetism is so regulated that only the particles of magnetic pyrites which contain no nickel or cobalt are acted upon, the magnetism being too weak to draw away the less magnetic or nickeliferous pyrrhotite. After the pure pyrrhotite has thus been separated the remainder of the concentrate is run through a more powerful magnetic separator, which withdraws the nickeliferous pyrrhotite, leaving all the other or non-magnetic materials. The nickeliferous pyrrhotite which is obtained in this way, although small in quantity compared with the whole amount of ore, will be sulficiently rich to be put into a matte by the regular methods. The remainder of the concentrate is then roasted in a closed cylinder with slight access of air, it desirable, to render the copper pyrites magnetic, when the magnetic copper pyrites may be withdrawn from the rest of the material by a magnetic separator, as explained in my patent, No.465,250. After the copper pyrites have been withdrawn from the concentrate the remainder, containing the gold, silver, zinc, lead, &c., of the original ore, is worked in the wet way or matted and worked electrolytically, as will be well understood.
What I claim is- 1. The process of separating nickeliferous from non-nickeliferous pyrrhotite where both occur in the same ore, consisting in subjecting the crushed material to a magnetic action of such strength that, due to the diiference in magnetic capacity of the nickeliferous and non-nickeliferous pyrrhotite, the non-nickeliferous pyrrhotite will be acted upon magnetically, while the nickeliferous pyrrhotite will not be thus acted upon, substantially as set forth.
2. The process of treating ores containing nickeliferous and non-nickeliferouspyrrhotite, consisting in first crushing the ore to free the particles ofipyrites from the gangue and other metals, passing the material through a magnetic separator of a sufficient strength to withdraw all the magnetic pyrites, and then passing the magnetic pyrites through another magnetic separator having a sufiicient strength to act upon the non-nickeliferous pyrrhotite, but not upon the nickeliferous pyrrhotite, substantially as set forth.
This specification signed and witnessed this 9th day of July, 1892.
THOS. A. EDISON.
Witnesses:
RICHARD N. DYER, EUGENE CONRAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US485842A true US485842A (en) | 1892-11-08 |
Family
ID=2554691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US485842D Expired - Lifetime US485842A (en) | Method of magnetic-ore separation |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US485842A (en) |
-
0
- US US485842D patent/US485842A/en not_active Expired - Lifetime
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