US2335485A - Flotation of cement minerals - Google Patents
Flotation of cement minerals Download PDFInfo
- Publication number
- US2335485A US2335485A US341438A US34143840A US2335485A US 2335485 A US2335485 A US 2335485A US 341438 A US341438 A US 341438A US 34143840 A US34143840 A US 34143840A US 2335485 A US2335485 A US 2335485A
- Authority
- US
- United States
- Prior art keywords
- flotation
- froth flotation
- cement
- alcohol
- ethyl
- 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
- 239000004568 cement Substances 0.000 title description 29
- 238000005188 flotation Methods 0.000 title description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 title description 2
- 239000011707 mineral Substances 0.000 title description 2
- 238000009291 froth flotation Methods 0.000 description 27
- 239000011435 rock Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 17
- 235000019441 ethanol Nutrition 0.000 description 16
- 235000014113 dietary fatty acids Nutrition 0.000 description 13
- 239000000194 fatty acid Substances 0.000 description 13
- 229930195729 fatty acid Natural products 0.000 description 13
- 150000004665 fatty acids Chemical class 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 10
- 238000011084 recovery Methods 0.000 description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 8
- -1 talloel Chemical class 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000001737 promoting effect Effects 0.000 description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- 235000021323 fish oil Nutrition 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 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
- 239000003350 kerosene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000126 substance Substances 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
- B03D1/008—Organic compounds containing oxygen
-
- 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
Definitions
- the present invention relates to the froth flotation of cement minerals and more specifically relates to a method of improving the promoting power 01' the promoters ordinarily employed in concentrating cement ore values by froth flotation.
- the values of cement ores can be concentrated or recovered by froth flotation processes in which fatty acid substances are employed as promoters.
- promoters used heretofore are the free fatty acids themselves such as oleic acid, fish oil fatty acids, talloel, fatty acid soaps, and the like.
- these various promoters may be mixed with an alkali such as caustic soda along with a water-immiscible oil such as fuel oil and may or not also contain a frother such as pine oil or kerosene.
- the promoting power of the fatty acid type promoters employed in concentrating cement materials by froth flotation can very greatly be increased by adding a low percentage of an aliphatic alcohol or aliphatic ether alcohol to the promoter prior to the froth flotation operation.
- Some of the prior processes have used alcoholic solutionsof flotation reagents, e. g., where the alcohol used is equal'to or greater than the amount of flotation reagent. In such processes the alcohol was used as a solvent for the flotation reagents and was merely a method of obtaining the flotation reagents in highly concentrated form.
- the fatty acid type flotation reagent is diluted with about 20% or less of analcohol to increase the promoting power.
- the quantity of alcohol employed in carrying out the present invention is very much less than the quantities employed as solvents in the prior solution methods.
- the exact reason why the promoting power of the cement flotation promoters is increased by the diluting with a small amount of an alcohol has not been deflnitely determined and we do not desire therefore to limit the present invention to any theory or explanation as to why the promoting power is increased.
- the fatty acid promoter. is diluted with about 20% or less of an aliphatic alcohol or aliphatic ether alcohol.
- This mixture is then employed in the usual manner for conducting the froth flotation.
- We may, however, mix the fatty acid alcohol mixture with an equal quantity of fuel oil and then add 5 this 50/50 mixture to the flotation feed or pulp containing the correct quantity of caustic and then condition for a short time prior to the froth flotation.
- the promoting power of the fatty acid type promoters is increased by diluting with 20% or less of any of the well known aliphatic alcohols or ether alcohols and is not limited to any particular alcohol or ether alcohol.
- aliphatic alcohols that have been found to be useful are those such as methyl, ethyl, propyl, isopropyl, butyl, iso-butyl, octyl; the polyhydroxy alcohols such as glycol, diethylene glycol, or polyethylene glycols, and the various ether alcohols such as mono-methyl ether of diethylene glycol, mono-ethyl ether of diethylene glycol, mono-butyl ether of diethylene glycol and the like.
- the term aliphatic alcohol as used in the appended claims is intended to include the "unsubstituted monoand poly-hydric aliphatic alcohols and the aliphatic ether alcohols such as those listed above.
- Example 1 The ore sample used in these tests, was a sample of full size range cement rock slurry (not deslimed) from the Valley Forge Cement Company. The sample in the form of a pulp was thoroughly mixed by agitation with a mechanical agitator. I The procedure following in conducting these 40 flotation tests is described as follows:
- the improvement in the recovery of cement rock values by froth flotation processes which comprises subjecting an aqueous pulp of cement rock to froth flotation in :the' presence of a cement rock ore promoter of the group consisting of higher fatty acids, mixtures of higher fatty acids, and soaps of such acids, said p'romoters being diluted with at least one aliphatic alcohol, the alcoholic content of said promoter being from about 9% to not more than about 20%.
Landscapes
- Paper (AREA)
Description
Patented Nov. 30, 1943 FLOTAIFION OF CEMENT DHNERAIJS Ludwig J. Christmann, Yonkers, N. Y., and Stephen E. Erickson, Springdale, onn., assignors to American Cyanamid Company, New York, N. Y a corporation of Maine No Drawing. Application lune 20, 1940, Serial No. 341,438
10 Claims.
The present invention relates to the froth flotation of cement minerals and more specifically relates to a method of improving the promoting power 01' the promoters ordinarily employed in concentrating cement ore values by froth flotation.
It is well known in the art that the values of cement ores can be concentrated or recovered by froth flotation processes in which fatty acid substances are employed as promoters. Among the more important promoters used heretofore are the free fatty acids themselves such as oleic acid, fish oil fatty acids, talloel, fatty acid soaps, and the like. In carrying out the actual froth flotation operation these various promoters may be mixed with an alkali such as caustic soda along with a water-immiscible oil such as fuel oil and may or not also contain a frother such as pine oil or kerosene.
In accordance with the present invention it has beendisco'vered that the promoting power of the fatty acid type promoters employed in concentrating cement materials by froth flotation can very greatly be increased by adding a low percentage of an aliphatic alcohol or aliphatic ether alcohol to the promoter prior to the froth flotation operation. Some of the prior processes have used alcoholic solutionsof flotation reagents, e. g., where the alcohol used is equal'to or greater than the amount of flotation reagent. In such processes the alcohol was used as a solvent for the flotation reagents and was merely a method of obtaining the flotation reagents in highly concentrated form. In thepresent invention, however, the fatty acid type flotation reagent is diluted with about 20% or less of analcohol to increase the promoting power. The quantity of alcohol employed in carrying out the present invention is very much less than the quantities employed as solvents in the prior solution methods. The exact reason why the promoting power of the cement flotation promoters is increased by the diluting with a small amount of an alcohol has not been deflnitely determined and we do not desire therefore to limit the present invention to any theory or explanation as to why the promoting power is increased.
In carrying out the present invention the fatty acid promoter. is diluted with about 20% or less of an aliphatic alcohol or aliphatic ether alcohol.
This mixture is then employed in the usual manner for conducting the froth flotation. We may, however, mix the fatty acid alcohol mixture with an equal quantity of fuel oil and then add 5 this 50/50 mixture to the flotation feed or pulp containing the correct quantity of caustic and then condition for a short time prior to the froth flotation.
It is an advantage of the present invention that the promoting power of the fatty acid type promoters is increased by diluting with 20% or less of any of the well known aliphatic alcohols or ether alcohols and is not limited to any particular alcohol or ether alcohol. Among the aliphatic alcohols that have been found to be useful are those such as methyl, ethyl, propyl, isopropyl, butyl, iso-butyl, octyl; the polyhydroxy alcohols such as glycol, diethylene glycol, or polyethylene glycols, and the various ether alcohols such as mono-methyl ether of diethylene glycol, mono-ethyl ether of diethylene glycol, mono-butyl ether of diethylene glycol and the like. The term aliphatic alcohol as used in the appended claims is intended to include the "unsubstituted monoand poly-hydric aliphatic alcohols and the aliphatic ether alcohols such as those listed above.
The invention will be further illustrated in connection with the following specific examples.
Example 1 The ore sample used in these tests, was a sample of full size range cement rock slurry (not deslimed) from the Valley Forge Cement Company. The sample in the form of a pulp was thoroughly mixed by agitation with a mechanical agitator. I The procedure following in conducting these 40 flotation tests is described as follows:
Charges of the slurry containing 600 grams of dry solids were transferred to a laboratorysize Fagergren flotation machine and diluted to 22% solids with laboratory water.
Reagents were then added and conditioned with the pulp for one minute. The air valve was opened and the resulting concentrate froth was skimmed off for three minutes. The flotation test products were filtered, dried, weighed v and titrated for CaCOz contents.
The metallurgical data pertaining to these tests are given in the table.
subjecting an aqueous pulp of cement rock to froth flotation in the presence of talloel diluted Metallurgical data Concentrate Tailing Mixture tested. M 10 a 18025 No Per- Dist. Per- Dist. 11
' 0800] Percent Percent ofleed cent percent cent percent Promoter Diluent' weight 0200* 0500. 5751 115 caoo' c4001 1 1.
75.47 40.71 85.70 55.10 50.20 57.24 4481 8.0.8. N555 V 0.55 75.78 75.05 85.07 84.22 24.07 47.88 15.78 r.o.r.4.,00%.. Ethyl 5155551, 102' 0.54 75.40 80.80 84.50 00.58 10.11 88.20 0.57 -F.O.F.A.,507- 1011 1515511 0.05 75.42 75.55 84.80 84.54 2444 48.50 15.00 F. 0.1. .4., 0.. Isopropylalcohoi 10% 0.55 75.57 77.77 88.54 85.86 22.25 I 48.15 14.14 F.O. Sec.butylalcoho,l% 0.57 75.00 80.20 84.57 80.25 10.80 41.25 10.74 F. o. K418901772" Tert. butyi 41551151, 10%.--- 0.05 75.45 7808 84.55 88.51 21.02 41.25 11.40 F. o. r. 4.,0072. s05.0m 18155h51,1o7. 0.57 75.87 80.70 84.52 80.20 10.21 42.02 10.80 F. o. 8.4.00 Tert.'am 151551151.1 0.05 75.50 81.82 82.77 80.70 18.18 42.70 10.30 F. 0. 814,007; 11551151107, 0.57 75.02 75.27 84:57 8485 2475 48.55 .15.15 F. 0. 14.00%. 151 y 5:15: 51 diethylene 0.54
A yco 75.70 80.45 84.55 80.87 10.55 50.22 10.18 F. o. F. 4., 00%.. Butyl 551151 51 515511 715115 0.55
1 81m 1 75.72 1.80 85.54 24.85 78.54 72.84 75.05 11.0.8.8 N555 0.27 75.82 50.87 4.55 50.18 40.58 55.04 45.82 10.88 0078511 0515555 1 0.20 75.00 55.80 85.00 51.18 45.70 52.54 88.82 F, 0. 1 218 807 Ethylaleohol, 0.28 75.40 50.80 85.80- 75.50 58.51 50.00 25.81 F. 0. F. 11., 000"" Isopropylslcohol 10% 0.28 75.55 58.81 84.05 75.80 81.50 57.50 24.11 F. 0. 1 .4., 00 7 Sec. butylalcoho,l0% 0.20 75.20 05.88 84.52 74.01 88.12 50.70 25.00 F.o.r..4.,000". Tert. butyl 51551151, 10% 0.28 75.58 70.77 85.80 78.85 20.28 55.05 21.04 F. o. F. 4.,-00 7Z-- Sec. arnyl 51551151, 10%. 0.2 70.15 57.05 84.32,. 75.27 82.04 58.77 24.73: F. 0. F.A.,907. 'lertam 151551151 10% 0.28 75.55 75.10 85.54 80.71 25.00 54.25 10.20 F. o. F. .4.,00 7. c5 1 5115 1 0.20 75.14 52.05 8457 50.02 87.05 51.88 50.08 100.114.3021.. Etly 5511 41 51 515511 15115 0.20
3 co 75.74 08.05 85.80 75.50 81.04 58.58. 24.70 F. o. F. 4., 00%.. 553, 1 651151 51 diethyleno 0.50.
y 0 28...- 75.07 75.58 85.54 80.15 25.52 45.17 15.87 01515 8510 None 0.00 24 70.04 78.82 85.08 87.55 2 .58 48.58 12.37 01510 851d,00 7... Ethyl 51551151, 1 0.54 75.51 80.10 85.54 00.51 10.81 85. 2 0.40 01515 5515, Ethyl 1551151, 0.57 25 74.85 57.21 80.27 78.05 5270 50.14 21.07 010154510 N 0.28
75.57 72.40 85.84 81.75 27.50 40.08 18.24 015150515, Ethyl 51551151, 102' 0.20 28 75.42 72.85 85.54 82.45 27.15 48.81 17.57 01015 acid,80%.... Ethylalcohoi, 0.20 20 75.20 75.04 80.70 85.57 24.05 4472 14.55 TalloelH None 0.58 75.55 77.04 80.15 85.00 22.05 4472; 15.40 TalloelH, Ethyl 51051151, 107 0.55 81 75.00 70.00 85.78 80.85 25.04 45.55 15.14 T511551H,80% Ethyl 5155115120 75 0.07 52 75.54 50.07 80.54 57.80 40.05 51.57 82.20 TalloelH None; 0.25 75.25 08.50 85.40 .7584 81.40 50.25 28.10 T811551H,00% Ethyl 51551151, 10 7. 0.27 70.18 05.80 84.51 72.54 84.01 50.45 27.40 TalloelH, 1015 714155551, 0.25
1 above 05818 F. 'o. r. .4. 5581;115:511 "81] 511 fatty acid.
What we claim is: v
1. In the recovery of values from cement rock by froth flotation the process which comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of a fish oil fatty acid diluted with about 10% of ethyl alcohol as the flotation promoter.
2. In the recovery of values from cement rock by froth flotation the process which comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of a fish oil fatty aciddiluted with about 10% of an aliphatic alcohol.
3. The improvement in the recovery of cement rock values by froth flotation processes which comprises subjecting an aqueous pulp of cement rock to froth flotation in :the' presence of a cement rock ore promoter of the group consisting of higher fatty acids, mixtures of higher fatty acids, and soaps of such acids, said p'romoters being diluted with at least one aliphatic alcohol, the alcoholic content of said promoter being from about 9% to not more than about 20%.
4. In the recovery of values from cement rock by froth flotation, the process which comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of a fish oil fatty acid diluted with from about 9% to not more than about 20% of an aliphatic alcohol.
5. In the recovery of values from cement rock by froth flotation, the process which comprises with from about 9% to not more,than about 20% of an aliphatic alcohol. g
6. In the recovery of values from cement rock by froth flotation, the process which comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of talloel diluted with about 10% of an aliphatic alcohol. p
7. In the recovery of values from cement rock by froth flotation, the process which comprises subjecting an aqueous'pulp of cement rock to froth flotation in the presence of talloel diluted with about 10% of ethyl alcohol.
8. In the recovery of values from cement rock by froth flotation, the process which'comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of oleic acid diluted with from about 9% to not more than about 20% of an aliphatic alcohol.
9. In the recovery of values from cement rock by froth flotation, the process which comprises subjecting an aqueous pulp of cementrock to froth flotation-in the presence of oleic acid diluted with about 10% of an aliphatic alcohol.
10. In the recovery of values from cement rock by froth flotation, the process which comprises subjecting an aqueous pulp of cement rock to froth flotation in the presence of oleic acid diluted with about 10% of ethyl alcohol.
LUDWIG J. CI-Il'tIS'I'MANN. STEPHEN E. ERICKSON.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US341438A US2335485A (en) | 1940-06-20 | 1940-06-20 | Flotation of cement minerals |
| US489814A US2377129A (en) | 1940-06-20 | 1943-06-05 | Flotation of phosphate minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US341438A US2335485A (en) | 1940-06-20 | 1940-06-20 | Flotation of cement minerals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2335485A true US2335485A (en) | 1943-11-30 |
Family
ID=23337572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US341438A Expired - Lifetime US2335485A (en) | 1940-06-20 | 1940-06-20 | Flotation of cement minerals |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2335485A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3865718A (en) * | 1972-12-07 | 1975-02-11 | Dow Chemical Co | Frothers for the flotation of sulfidic ores |
| US3909399A (en) * | 1972-05-08 | 1975-09-30 | Vojislav Petrovich | Froth flotation method for recovery of minerals |
| US4337149A (en) * | 1981-05-11 | 1982-06-29 | Sherex Chemical Company, Inc. | Promoters for use in the anionic circuit of froth flotation of mineral ores |
| US5057209A (en) * | 1989-04-11 | 1991-10-15 | The Dow Chemical Company | Depression of the flotation of silica or siliceous gangue in mineral flotation |
| US5124028A (en) * | 1990-06-28 | 1992-06-23 | The Dow Chemical Company | Froth flotation of silica or siliceous gangue |
| US5131600A (en) * | 1989-02-13 | 1992-07-21 | The Dow Chemical Company | Alkanol amine grinding aids |
| US6994142B2 (en) | 2004-05-10 | 2006-02-07 | Murphy Willis A | Laminating machine |
-
1940
- 1940-06-20 US US341438A patent/US2335485A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909399A (en) * | 1972-05-08 | 1975-09-30 | Vojislav Petrovich | Froth flotation method for recovery of minerals |
| US3865718A (en) * | 1972-12-07 | 1975-02-11 | Dow Chemical Co | Frothers for the flotation of sulfidic ores |
| US4337149A (en) * | 1981-05-11 | 1982-06-29 | Sherex Chemical Company, Inc. | Promoters for use in the anionic circuit of froth flotation of mineral ores |
| US5131600A (en) * | 1989-02-13 | 1992-07-21 | The Dow Chemical Company | Alkanol amine grinding aids |
| US5057209A (en) * | 1989-04-11 | 1991-10-15 | The Dow Chemical Company | Depression of the flotation of silica or siliceous gangue in mineral flotation |
| US5124028A (en) * | 1990-06-28 | 1992-06-23 | The Dow Chemical Company | Froth flotation of silica or siliceous gangue |
| US6994142B2 (en) | 2004-05-10 | 2006-02-07 | Murphy Willis A | Laminating machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2377129A (en) | Flotation of phosphate minerals | |
| US2312466A (en) | Oxygen-bearing ore flotation | |
| US4158623A (en) | Process for froth flotation of phosphate ores | |
| US2335485A (en) | Flotation of cement minerals | |
| US2342277A (en) | Separation of pyrite, arsenopyrite, and pyrrhotite by flotation | |
| US2070076A (en) | Separation of molybdenite from copper sulphides | |
| US2492936A (en) | Differential froth flotation of sulfide ores | |
| US2578790A (en) | Froth flotation of ferruginous impurities from finely divided granite rock | |
| US2074699A (en) | Flotation process | |
| US2278060A (en) | Mineral concentration | |
| US2336868A (en) | Concentration of acidic minerals | |
| US4207178A (en) | Process for beneficiation of phosphate and iron ores | |
| US4330398A (en) | Flotation of phosphate ores with anionic agents | |
| US2312387A (en) | Froth flotation of acidic minerals | |
| US1364308A (en) | Flotation of minerals | |
| US2298281A (en) | Process of flotation separation of ore | |
| US2610738A (en) | Froth flotation of monazite from heavy gravity minerals | |
| US2364272A (en) | Mineral concentration | |
| US2126292A (en) | Process of mineral concentration | |
| US4138350A (en) | Collector combination for non-sulfide ores comprising a fatty acid and a sulfosuccinic acid monoester or salt thereof | |
| US2669355A (en) | Flotation method and reagent | |
| US2321186A (en) | Froth flotation of acidic minerals | |
| US1952907A (en) | Method of flotation of oxidized ores | |
| US1761546A (en) | Concentration of phosphate-bearing material | |
| US2469422A (en) | Selective flotation of chromite ores |