US1831808A - Preparing oxidized minerals for concentration by froth flotation - Google Patents
Preparing oxidized minerals for concentration by froth flotation Download PDFInfo
- Publication number
- US1831808A US1831808A US440621A US44062130A US1831808A US 1831808 A US1831808 A US 1831808A US 440621 A US440621 A US 440621A US 44062130 A US44062130 A US 44062130A US 1831808 A US1831808 A US 1831808A
- Authority
- US
- United States
- Prior art keywords
- concentration
- froth flotation
- sodium
- preparing oxidized
- pulp
- 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
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/901—Froth flotation; copper
Definitions
- copper carbonate, copper silicate, metallic copper, and other non-sulfide copper'mi'nerals may be so conditioned that they are often amenable to concentration by froth flotation, whereas, without the' use of some thiocarbonic acid compound, such minerals cannot be so -concentrated', or else present A xidi d ore f A i carrydifficulties to such concentration.
- actual flotation being accomplished by means of one or more actual flotation agents, such as an oil, amyl xanthate,,and so on.
- actual flotation agents such as an oil, amyl xanthate,,and so on.
- thiocarbonic acid itself is unstable and diflicult to manufacture, its most convenient form is either as a metallic salt, such as sodium thiocarbonate, potassium thiocarbonate, and so on, or an organic salt, such as ethyl 'thiocarbonate, amyl thiocarbonate, and so on.
- sodium tri-thiocarbonate a reaction product between sodium sulfide and carbon bisulfide, as indicated by the following equa tion: Na S plus CS equals Na cs Sulfur may be dissolved in the sodium sulfide, thus making a sodium polysulfide, which gives a better reaction with the carbon Chanel-concentrates acid radical is the agent which creates the Application filed March. 31, 1930. Serial No. 440,621.
- the flotation pulp may be prepared in any usual manner, and be aerated or agitated in any suitable flotation machine.
- the thiocarbonic acid compound maybe added to the fi0tatron pulp at an suitable stage of the ordinary process of otation, that is to say, either before, at the beginning of, or during agitation or aeration of the pulp.
- Tails tails Reagents used per ton of are 1.0 lb. sodium trithiocarbonate. 0.5 lb. amyl xanthate. 0.1 lb. frothing agent.
- Reagents per ton of are 1.0 lb. sodium trithiocarbonate. 1.0 lb. amyl xanthate. 0.2 lb. frothing agent.
- Reagents used per ton of are 3.0 lbs. sodium silicate.
- Example (a) the results obtained by means of the present process, indicate a recovery of 81.8 per cent; in Example (6), a recovery of 95.5%; and in Example (0), a recovery of 97.1%.
- the improvement which comprises subjecting the ore in the form of a pulp to the action of sodium trithiocarbonate.
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- Paper (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Patented Nov. 17, 1931 V UNITED STATES PATENT OFFICE LOCKWOOD W. FERRIS, OF SALT LAKE CITY, UTAH No Drawing.
copper carbonate, copper silicate, metallic copper, and other non-sulfide copper'mi'nerals, may be so conditioned that they are often amenable to concentration by froth flotation, whereas, without the' use of some thiocarbonic acid compound, such minerals cannot be so -concentrated', or else present A xidi d ore f A i carrydifficulties to such concentration.
It is to be clearly understood that the-pres.
actual flotation being accomplished by means of one or more actual flotation agents, such as an oil, amyl xanthate,,and so on.
It should be clear that the thiocarbonic desired condition. Inasmuch as thiocarbonic acid itself is unstable and diflicult to manufacture, its most convenient form is either as a metallic salt, such as sodium thiocarbonate, potassium thiocarbonate, and so on, or an organic salt, such as ethyl 'thiocarbonate, amyl thiocarbonate, and so on. Owing to its convenience, I have preferred to use sodium tri-thiocarbonate, a reaction product between sodium sulfide and carbon bisulfide, as indicated by the following equa tion: Na S plus CS equals Na cs Sulfur may be dissolved in the sodium sulfide, thus making a sodium polysulfide, which gives a better reaction with the carbon Chanel-concentrates acid radical is the agent which creates the Application filed March. 31, 1930. Serial No. 440,621.
bisulfide than does the normal sodium sulfide.
In practicing my improved method, the flotation pulp may be prepared in any usual manner, and be aerated or agitated in any suitable flotation machine. The thiocarbonic acid compound maybe added to the fi0tatron pulp at an suitable stage of the ordinary process of otation, that is to say, either before, at the beginning of, or during agitation or aeration of the pulp.
The amount of thiocarbonic acid and/or compounds thereofl used in my process, depends upon the nature of the particular ore being treated. The relative quantities that may be used, are best illustrated by examples from actual practice. Therefore, I give below the results obtained in the treatment of three ores of different character. These examples are: r
ing about two per cent copper, mostly in the form of silicate: 1
Per cent total copper Tails tails Reagents used per ton of are 1.0 lb. sodium trithiocarbonate. 0.5 lb. amyl xanthate. 0.1 lb. frothing agent.
Assay per cent copper Tails O. 025 Gleaner tails 0. 10 Cleaner concentrates 20. 6
Reagents per ton of are 1.0 lb. sodium trithiocarbonate. 1.0 lb. amyl xanthate. 0.2 lb. frothing agent.
0) An oxidized ore from the Yellow Pine mine at Goodsprings, Nevada:
Assay Per cent per cent tots lead. lead Tails 0. 17 2. 9 Cleaner tails 11. 9 31. 6 Cleaner concentrates 40. 3 65. 5
Reagents used per ton of are 3.0 lbs. sodium silicate.
2.0 lbs. sodium trithiocarbonate. 2.0 lbs. amyl xanthate.
0.1 lb. frothing agent.
In Example (a), the results obtained by means of the present process, indicate a recovery of 81.8 per cent; in Example (6), a recovery of 95.5%; and in Example (0), a recovery of 97.1%.
Having fully described my invention, what I claim is:
1. In the concentration of oxidized ores by froth flotation, the improvement which comprises subjecting the ore in the form of a pulp to the action of an alkali-metal trithiocarbonate.
2. In the concentration of oxidized ores by froth flotation, the improvement which comprises subjecting the ore in the form 01" a pulp to the action of sodium trithiocarbonate.
3. In the concentration by froth flotation of oxidized ores containing silicate and carbonate minerals, the improvement which comprises subjecting the ore in the form of a pulp to the action of sodium trithiocarbonate.
4. In the concentration by froth flotation of oxidized ores containing carbonate minerals, the improvement which comprises subjecting the ore in the form of a pulp to the action of an alkali metal trithiocarbonate.
5. In. the concentration by froth flotation of oxidized ores containing carbonate minerals, the improvement Which comprises subjecting the ore in the form of a pulp to the action of sodium trithiocarbonate.
In testimony whereof, I sign my name hereto.
LOCKWOOD W FERRIS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US440621A US1831808A (en) | 1930-03-31 | 1930-03-31 | Preparing oxidized minerals for concentration by froth flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US440621A US1831808A (en) | 1930-03-31 | 1930-03-31 | Preparing oxidized minerals for concentration by froth flotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1831808A true US1831808A (en) | 1931-11-17 |
Family
ID=23749495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US440621A Expired - Lifetime US1831808A (en) | 1930-03-31 | 1930-03-31 | Preparing oxidized minerals for concentration by froth flotation |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1831808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510050A (en) * | 1982-10-26 | 1985-04-09 | Phillips Petroleum Co | Metal trithiocarbonates as depressants |
| US4584118A (en) * | 1982-10-26 | 1986-04-22 | Phillips Petroleum Company | Metal trithiocarbonates as depressants |
-
1930
- 1930-03-31 US US440621A patent/US1831808A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510050A (en) * | 1982-10-26 | 1985-04-09 | Phillips Petroleum Co | Metal trithiocarbonates as depressants |
| US4584118A (en) * | 1982-10-26 | 1986-04-22 | Phillips Petroleum Company | Metal trithiocarbonates as depressants |
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