US3034648A - Promoting froth flotation - Google Patents
Promoting froth flotation Download PDFInfo
- Publication number
- US3034648A US3034648A US809814A US80981459A US3034648A US 3034648 A US3034648 A US 3034648A US 809814 A US809814 A US 809814A US 80981459 A US80981459 A US 80981459A US 3034648 A US3034648 A US 3034648A
- Authority
- US
- United States
- Prior art keywords
- polymer
- beta
- percent
- cum
- con
- 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
- 238000009291 froth flotation Methods 0.000 title claims description 11
- 230000001737 promoting effect Effects 0.000 title description 6
- 150000001875 compounds Chemical class 0.000 claims description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 description 56
- 238000000034 method Methods 0.000 description 20
- 239000012141 concentrate Substances 0.000 description 16
- 235000008504 concentrate Nutrition 0.000 description 16
- 239000010931 gold Substances 0.000 description 12
- 239000011701 zinc Substances 0.000 description 12
- 238000005188 flotation Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 7
- AHXNKQZOAALZOU-UHFFFAOYSA-N 3-ethoxybutanal Chemical compound CCOC(C)CC=O AHXNKQZOAALZOU-UHFFFAOYSA-N 0.000 description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 6
- 150000001299 aldehydes Chemical class 0.000 description 6
- 238000003556 assay Methods 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 229910052740 iodine Inorganic materials 0.000 description 6
- 239000011630 iodine Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000002329 infrared spectrum Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010665 pine oil Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- VVXNMKJDQVBOLT-UHFFFAOYSA-N 3-methoxybutanal Chemical compound COC(C)CC=O VVXNMKJDQVBOLT-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 4
- 229910052964 arsenopyrite Inorganic materials 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- OXGJKCALURPRCN-UHFFFAOYSA-N 3-methoxypropanal Chemical compound COCCC=O OXGJKCALURPRCN-UHFFFAOYSA-N 0.000 description 3
- CSRAJLZARGOTDV-UHFFFAOYSA-N 3-propoxybutanal Chemical compound CCCOC(C)CC=O CSRAJLZARGOTDV-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- MIUMTDPSDBCACC-UHFFFAOYSA-N copper zinc Chemical compound [Cu][Zn][Cu] MIUMTDPSDBCACC-UHFFFAOYSA-N 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 3
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical compound C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 description 2
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 125000006232 ethoxy propyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- -1 methoxypropyl Chemical group 0.000 description 2
- KOPMZTKUZCNGFY-UHFFFAOYSA-N 1,1,1-triethoxybutane Chemical compound CCCC(OCC)(OCC)OCC KOPMZTKUZCNGFY-UHFFFAOYSA-N 0.000 description 1
- BGXNGARHYXNGPK-UHFFFAOYSA-N 2-[1-[(4-methoxyphenyl)methylsulfanyl]cyclohexyl]acetic acid Chemical compound C1=CC(OC)=CC=C1CSC1(CC(O)=O)CCCCC1 BGXNGARHYXNGPK-UHFFFAOYSA-N 0.000 description 1
- IAHZBRPNDIVNNR-UHFFFAOYSA-N 2-ethoxyacetaldehyde Chemical compound CCOCC=O IAHZBRPNDIVNNR-UHFFFAOYSA-N 0.000 description 1
- RMJPDSDRGGRKTH-UHFFFAOYSA-N 2-ethoxybutanal Chemical compound CCOC(CC)C=O RMJPDSDRGGRKTH-UHFFFAOYSA-N 0.000 description 1
- YSEFYOVWKJXNCH-UHFFFAOYSA-N 2-methoxyacetaldehyde Chemical compound COCC=O YSEFYOVWKJXNCH-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical class CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 1
- 102100024133 Coiled-coil domain-containing protein 50 Human genes 0.000 description 1
- 108010062580 Concanavalin A Proteins 0.000 description 1
- 101000910772 Homo sapiens Coiled-coil domain-containing protein 50 Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 102100038239 Protein Churchill Human genes 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
- FENQZYRPJMQVRW-UHFFFAOYSA-N [Cu]S[Zn] Chemical compound [Cu]S[Zn] FENQZYRPJMQVRW-UHFFFAOYSA-N 0.000 description 1
- NNHUHXYFJOUGNE-UHFFFAOYSA-N [Zn].[Zn].[Cu].[Cu] Chemical compound [Zn].[Zn].[Cu].[Cu] NNHUHXYFJOUGNE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D323/00—Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms
- C07D323/04—Six-membered rings
-
- 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
- B03D1/0043—Organic compounds modified so as to contain a polyether group
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- R R and R are alkoxy-substituted straight chain alkyl radicals in which the straight chain portion has lto 3 carbon'atoms and the alkoxy subsiituen't also has 1 to 3 carbon atoms.
- the process for producing these new chemical com pounds comprises polymerising, in the presence of catalytic quantities of a halogen, one or more substituted aldehydes having 2 to 4 carbon atoms and each containing as a substituent an alkoxy group having 1 to 3 carbon atoms.
- R R and R in the general formula above may be the same or difierent. Iodine is the preferred catalyst.
- novel substances of this invention are shown by examples given in detail'hereaften to have valuable properties in the art of flotation, when used additionally to known promotors such as xanthates, with or without known frothers being also present; as the more detailed examples show, their net effect is to accelerate the flotation in a concentrate of the particular mineral being floated by the known promotors and frothers.
- promotors such as xanthates
- frothers being also present
- the new chemical compounds of this invention may with some ores show a dominance of their collecting properties and with other ores a dominance of their froth ing properties and the degree of eflectiveness or the said properties will also depend on the particular ore being used. Furthermore the new compounds of this invention can either be used in their purified form or can be used directly as; the reaction product of the reactions set out hereunder by way of example, without purification.
- FIG. 1 is the infra-red absorption spectrum of 2.4.6- tris-(Z methoxypropyl)-l.3.5-trioxane.
- FIG. 2 is the infra-red spectrum of the beta-methoxypropionaldehyde polymer.
- the sample from which this spectrum was prepared was not quite pure, the impurities showing up in e.g. the absorption at about 2.75 and 5.75 microns;
- FIG. 3 is the infra-red spectrum of the beta-ethoxybutyraldehyde polymer
- FIG. 4 is the infra-red spectrum of the beta-n-propoxybutyraldehyde polymer
- FIG. 5 is the infra-red spectrum of the copolymer of beta methoxybutyraldehyde and beta ethoxybutyraldehyde referred to below.
- reaction product is purified by distillation in known manner to yield the abovementioned new chemical substance which has a boiling point of C. at 0.05 mm. mercury.
- the structural formula of this substance is:
- Acetaldehydes methoxyacetaldehyde and ethoxyacetaldehyde were prepared in known manner and dried in known manner. To each of these substances a catalytic quantity of iodine was added in accordance with the process set out in Example I. An immediate increase in temperature indicated in each case the formation of the polymer. In each case the product was purified by distillation under reduced pressure in known manner and the identifying properties, as set out below, were determined.
- butyraldehyde beta-ethoxybutyraldehyde and beta-n-propoxy-butyr-aldehyde were all prepared and dried in known manner and then each was subjected to the polymerisation process of this invention in the presence of catalytic quantities of iodine. Thereafter the products were purified by distillation under reduced pressure in known manner and the identifying properties set out below, determined.
- STANDARD PROCEDURE IN ALL TESTS Crush ore to pass /8 inch screen Grind 3000 grams ore, 2200 m1. tapwater, 4 grams OaO, for 45 minutes; make up to volume in 10,000
- pH of pulp is now 7.1.
- E.P.A Polymer Beta-ethoxyproplon- 2.4.6-trls- (Zethoxyethyl) 2 2 R1, R Ra are aldehyde. 1.3.5-trloxane.
- 2mo1esBeta-methoxy- 1 R R3 are butyraldehyde 2.4 bis (2 methoxypro- CH CH-CH; M. (E) 3.14. Polymer..- and pyl) -6 (2 ethoxypropyD- 3 and 1.3.5-trioxane.
- P.B.A Polymer Beta-n-propoxybutyr- 2.4.6- trls (2'propoxypro- 3 3 R1, Ra, R3 are aldehyde. pyl)-1.3.5-trioxane.
- the final bulk concentrate of high-grade pyrites (Con. D) was 4.37% less in weight, but contained in it was 13.6% less of the copper, and 16.1% less of the zinc.
- the overall loss of copper in the tailings was 0.8% less, and of zinc 1.9% less.
- a feature of the plant was a unit cell included in th grinding circuit, and as it was felt that this would be an ideal place to observe the elfects, the accelerator was added to the pump sump immediately before the unit cell.
- a Denver-Fahrenwald machine of litre capacity was used with an aqueous ore pulp in the manner known to persons skilled in the art.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Catalysts (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA581560 | 1958-05-09 | ||
| ZA581839 | 1958-05-28 | ||
| ZA583543 | 1958-10-09 | ||
| ZA59853 | 1959-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3034648A true US3034648A (en) | 1962-05-15 |
Family
ID=38543015
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US809814A Expired - Lifetime US3034648A (en) | 1958-05-09 | 1959-04-29 | Promoting froth flotation |
| US124269A Expired - Lifetime US3031461A (en) | 1958-05-09 | 1961-06-21 | 1, 3, 5-trialkoxyalkyltrioxanes and process for their production |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US124269A Expired - Lifetime US3031461A (en) | 1958-05-09 | 1961-06-21 | 1, 3, 5-trialkoxyalkyltrioxanes and process for their production |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US3034648A (de) |
| BE (1) | BE578553A (de) |
| DE (1) | DE1149311B (de) |
| GB (1) | GB860498A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735931A (en) * | 1972-07-19 | 1973-05-29 | D Weston | Flotation of copper ores |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3322792A (en) * | 1963-07-12 | 1967-05-30 | Fmc Corp | Production of dichloroacetaldehyde cyclic trimer |
| EP2803666B1 (de) * | 2013-05-17 | 2016-04-27 | Symrise AG | Cyclische Acetale und Ketale sowie deren Verwendung als Riechstoff |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2347447A (en) * | 1942-04-30 | 1944-04-25 | Du Pont | Preparation of trioxane |
| US2465489A (en) * | 1946-07-16 | 1949-03-29 | Heyden Chemical Corp | Production of trioxane |
| US2561251A (en) * | 1945-01-26 | 1951-07-17 | Roger Frederick Powell | Trialkoxy paraffins as froth flotation frothing agents |
| US2770654A (en) * | 1953-11-19 | 1956-11-13 | Dow Chemical Co | Catalytic regeneration of phenylacetaldehyde from its trimer |
| US2901107A (en) * | 1957-08-20 | 1959-08-25 | Minerec Corp | Froth flotation of copper sulfide ores |
| US2904177A (en) * | 1957-05-29 | 1959-09-15 | Nat Lead Co | Flotation of silicates from titaniferous iron ores |
-
1959
- 1959-04-29 US US809814A patent/US3034648A/en not_active Expired - Lifetime
- 1959-05-01 GB GB14973/59A patent/GB860498A/en not_active Expired
- 1959-05-08 DE DEN16685A patent/DE1149311B/de active Pending
- 1959-05-09 BE BE578553A patent/BE578553A/fr unknown
-
1961
- 1961-06-21 US US124269A patent/US3031461A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2347447A (en) * | 1942-04-30 | 1944-04-25 | Du Pont | Preparation of trioxane |
| US2561251A (en) * | 1945-01-26 | 1951-07-17 | Roger Frederick Powell | Trialkoxy paraffins as froth flotation frothing agents |
| US2465489A (en) * | 1946-07-16 | 1949-03-29 | Heyden Chemical Corp | Production of trioxane |
| US2770654A (en) * | 1953-11-19 | 1956-11-13 | Dow Chemical Co | Catalytic regeneration of phenylacetaldehyde from its trimer |
| US2904177A (en) * | 1957-05-29 | 1959-09-15 | Nat Lead Co | Flotation of silicates from titaniferous iron ores |
| US2901107A (en) * | 1957-08-20 | 1959-08-25 | Minerec Corp | Froth flotation of copper sulfide ores |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735931A (en) * | 1972-07-19 | 1973-05-29 | D Weston | Flotation of copper ores |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1149311B (de) | 1963-05-30 |
| BE578553A (fr) | 1959-08-31 |
| US3031461A (en) | 1962-04-24 |
| GB860498A (en) | 1961-02-08 |
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