US1610217A - Process of concentrating ores by flotation - Google Patents
Process of concentrating ores by flotation Download PDFInfo
- Publication number
- US1610217A US1610217A US25701A US2570125A US1610217A US 1610217 A US1610217 A US 1610217A US 25701 A US25701 A US 25701A US 2570125 A US2570125 A US 2570125A US 1610217 A US1610217 A US 1610217A
- Authority
- US
- United States
- Prior art keywords
- flotation
- thio
- urea
- ore
- ores
- 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
- 238000005188 flotation Methods 0.000 title description 16
- 238000000034 method Methods 0.000 title description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- KFFQABQEJATQAT-UHFFFAOYSA-N N,N'-dibutylthiourea Chemical compound CCCCNC(=S)NCCCC KFFQABQEJATQAT-UHFFFAOYSA-N 0.000 description 5
- 239000008396 flotation agent Substances 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000003585 thioureas Chemical class 0.000 description 4
- FCSHMCFRCYZTRQ-UHFFFAOYSA-N N,N'-diphenylthiourea Chemical compound C=1C=CC=CC=1NC(=S)NC1=CC=CC=C1 FCSHMCFRCYZTRQ-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241001092591 Flota Species 0.000 description 1
- 102000018210 Recoverin Human genes 0.000 description 1
- 108010076570 Recoverin Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- -1 aliphatic amines Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
-
- 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
- This'invention relates to the recovery of valuable minerals by flotation, and more particularly to the recovery bymeans ofa certain class of'organic flotation agents.
- the invention consists broadly, therefore, in a process for the flotation of oresby the aid of alkyl-substituted thioureas.
- R and R' represent the same or different substituted or unsubstituted aliphatic radicals such as ethyl, propyl, isopropyl, butyl, isobutyl, amyl, etc.
- a specific example of my new class of flotation agents is dibutyl-thio-urea. This compound is made by heating 2 molecular proportions of normal-primary-butyl amine with one molecular proportion of carbon disulphide in the-presence of .01 mol. of sulphur at'the refluxing temperature for 5-6 hours. At the-end of'the reaction any unconsumed carbon disulphideand butylamine are removed by steam distillation and the product is. heated, in-the presence of alcohol if necessary, until all dithio-carbamate has been transposed to the thio-urea. After -fil tration the dibutyl-thio-urea is dried and is ready for use.
- Thi reggent was used for the flotation of Phelps-D ge Corporation Copper queen ore'in the ollowing manner: 500 gms. .of minus 28 mesh ore were ground for 20 min- 'utes in a pebble mill with 50000. of H,O,
- urea are in the proportion of 2.4 pounds and 0.10' pounds respectively per ton of ore.
- the pulp from the pebble mill was transferred to a J anney laboratory flotation machine, diluted to about 2 liters and a rougher concentrate removed for 10 minutes, water being added as needed; The following results were obtained, comparative results with thio-carbanilide being included:
- R andR' represent aliphatic hydrocarbon radicals.
- the ste w ich comprises subjecting the ore in t e form of a pulp to a flotation operation in the presence of a substance having the following,
- RNH CS-NI- IR prises subjecting the ore in the form of a non-acid pulp to a flotation operation in the presence of a di-alkyl-thio-ureaQ 6.
- the step which comprises subjecting the ore in the form of an alkaline pulp to a flotation operation in the presence of a di-alkvl-thio-urea.
- the step which comprises subjecting the ore in the form'of an alkaline pulp to a flotation operation in the presence of a di-butyl-thio urea.
Landscapes
- Paper (AREA)
Description
Patented Dec. 7, 1926.
UNITED STATES v 1,610,217 PATENT OFFICE.
HAROLD WALTER ELLEY, OF WILMINGTON, DELAWARE, ASSIGNOR TO E. I, DU PONT DE NEMOURS & COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.
No Drawing.
This'invention relates to the recovery of valuable minerals by flotation, and more particularly to the recovery bymeans ofa certain class of'organic flotation agents.
It has been shown in United States Paten'ts Nos; 1,364,307, 71,364,308, 1,364,859 and 1,415,899 that aryl-subs'tituted thio-ureas and particularly .thio-carbanilide may be used advantageously in the flotation of minerals. While thio carban'ilide has been used commercially as a flotation-reagent, it has been necessary to use it-in solution in approximately our parts of ortho-toluidine,
Y Y and at the present time its use is negligible,
ith'aving been replaced by much more eflicient reagents.
I have discovered that' very highly selective flotation agents are formed if in the formation of substituted thio-ureas, aliphatic amines are employed instead of aromatic amines; The invention consists broadly, therefore, in a process for the flotation of oresby the aid of alkyl-substituted thioureas.
My new flotation agents have the following general graphical formula;
where R and R' represent the same or different substituted or unsubstituted aliphatic radicals such as ethyl, propyl, isopropyl, butyl, isobutyl, amyl, etc. A specific example of my new class of flotation agents is dibutyl-thio-urea. This compound is made by heating 2 molecular proportions of normal-primary-butyl amine with one molecular proportion of carbon disulphide in the-presence of .01 mol. of sulphur at'the refluxing temperature for 5-6 hours. At the-end of'the reaction any unconsumed carbon disulphideand butylamine are removed by steam distillation and the product is. heated, in-the presence of alcohol if necessary, until all dithio-carbamate has been transposed to the thio-urea. After -fil tration the dibutyl-thio-urea is dried and is ready for use.
Thi reggent was used for the flotation of Phelps-D ge Corporation Copper queen ore'in the ollowing manner: 500 gms. .of minus 28 mesh ore were ground for 20 min- 'utes in a pebble mill with 50000. of H,O,
0.6 .gnis. of lim'e,'and .025 gms. of dibuty thio-nrea. The lime and the dibntyl-thio- I 'phatic radicals.
PROCESS ,OF CONCENTBATING ORES BY FLOTA TIQN.
Application and April 24, 1925, Serial no, 25,701.
urea are in the proportion of 2.4 pounds and 0.10' pounds respectively per ton of ore. The pulp from the pebble mill was transferred to a J anney laboratory flotation machine, diluted to about 2 liters and a rougher concentrate removed for 10 minutes, water being added as needed; The following results were obtained, comparative results with thio-carbanilide being included:
Pounds 8 2 5 Per cent g? a? reagent eoneenm recovper ton tratetaflmgs ered Diliutyl-thio-urea a 10 s. 69 o. 34 so. 0 Thio-carbanilide o 40 4. 62 l. 30 16. 9
I I l 'r. 'r. mHtuIeS Z a 52 a 49 72.3
No frothing agent was used when e'mploy ing dibutyl-thio-urea since it functions both as a selective and a frothing reagent. With otherores, however, it may be necessary to employ a frothin agent.
though, in il ustrating my new process, reference has been made specifically to copper ore, to a certain dibutyl-thio-urea, and to various specific conditions of operation, it will be understood that my invention is not limited to these specific substances or'conditions, but includes generally processes of recoverin values from ores by flotation in which 518 flotation agents are alkyl-substituted thio-ureas.
- Although my flotation agents are effective to a certain extent in an acid pulp, better results are usually obtainable by operating 'of a substance having the following general molecular formula:
R'NHCS--NH-Rf where R and R represent-unsubstituted ali- 2- In .the process and minerals by'flotatiomthe step which of concentrating ores comprises subjecting the ore in the form of .a pulp to a flotation operation in the. presence of a substance having the following general molecular formula:
Where R andR' represent aliphatic hydrocarbon radicals.
3. In the process of concentratin ores and minerals by flotation, the ste w ich comprises subjecting the ore in t e form of a pulp to a flotation operation in the presence of a substance having the following,
general molecular formula:
RNH CS-NI- IR prises subjecting the ore in the form of a non-acid pulp to a flotation operation in the presence of a di-alkyl-thio-ureaQ 6. In the process of concentrating ores and minerals by flotation, the step which coms prises subjecting the ore in the form of a pulp made alkaline by the additionof lime to a flotation operation in the presence of a di-alkyl-thio-urea;
' 7. In the process of concentrating ores and minerals by flotation, the step which comprises subjecting the ore in the form of an alkaline pulp to a flotation operation in the presence of a di-alkvl-thio-urea.
8. A process as defined in claim 7 in which the alkyl groups of the di-alkyl-thio-urea each contain from 1 to 6 carbon atoms.
9. In the process of concentrating ores and minerals by flotation, the step which comprises subjecting the ore in the form'of an alkaline pulp to a flotation operation in the presence of a di-butyl-thio urea.
In testimony whereof, I aflix my signature.
HAROLD W.- ELLEY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25701A US1610217A (en) | 1925-04-24 | 1925-04-24 | Process of concentrating ores by flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25701A US1610217A (en) | 1925-04-24 | 1925-04-24 | Process of concentrating ores by flotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1610217A true US1610217A (en) | 1926-12-07 |
Family
ID=21827591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US25701A Expired - Lifetime US1610217A (en) | 1925-04-24 | 1925-04-24 | Process of concentrating ores by flotation |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1610217A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458523A (en) * | 1945-10-05 | 1949-01-11 | Kennecott Copper Corp | Froth flotation of sulfide ores in the presence of a n-dichlorothiocarbanilide |
| US2628716A (en) * | 1946-03-15 | 1953-02-17 | Koppers Co Inc | Flotation process |
| US4256227A (en) * | 1979-04-23 | 1981-03-17 | Vojislav Petrovich | Froth flotation method for recovering metal values from their ores by thiourea or substituted thiourea |
| US5074993A (en) * | 1989-09-06 | 1991-12-24 | Inco Limited | Flotation process |
-
1925
- 1925-04-24 US US25701A patent/US1610217A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458523A (en) * | 1945-10-05 | 1949-01-11 | Kennecott Copper Corp | Froth flotation of sulfide ores in the presence of a n-dichlorothiocarbanilide |
| US2628716A (en) * | 1946-03-15 | 1953-02-17 | Koppers Co Inc | Flotation process |
| US4256227A (en) * | 1979-04-23 | 1981-03-17 | Vojislav Petrovich | Froth flotation method for recovering metal values from their ores by thiourea or substituted thiourea |
| US5074993A (en) * | 1989-09-06 | 1991-12-24 | Inco Limited | Flotation process |
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