GB2207619A - Ore purification - Google Patents
Ore purification Download PDFInfo
- Publication number
- GB2207619A GB2207619A GB08718420A GB8718420A GB2207619A GB 2207619 A GB2207619 A GB 2207619A GB 08718420 A GB08718420 A GB 08718420A GB 8718420 A GB8718420 A GB 8718420A GB 2207619 A GB2207619 A GB 2207619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flotation
- apatite
- solution
- process according
- carbon atoms
- 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.)
- Withdrawn
Links
- 238000000746 purification Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 150000001412 amines Chemical class 0.000 claims abstract description 12
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 10
- 239000000194 fatty acid Substances 0.000 claims abstract description 10
- 229930195729 fatty acid Natural products 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000001506 calcium phosphate Substances 0.000 claims abstract description 6
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 6
- 235000011010 calcium phosphates Nutrition 0.000 claims abstract description 6
- 238000009291 froth flotation Methods 0.000 claims abstract description 6
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims abstract description 6
- -1 C20 fatty acid Chemical class 0.000 claims abstract description 3
- 238000005188 flotation Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 abstract description 12
- 229910052586 apatite Inorganic materials 0.000 abstract description 11
- 229910021532 Calcite Inorganic materials 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000000356 contaminant Substances 0.000 abstract description 2
- 150000004760 silicates Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 description 15
- 239000011707 mineral Substances 0.000 description 15
- 235000010755 mineral Nutrition 0.000 description 15
- 239000000126 substance Substances 0.000 description 8
- 239000012153 distilled water Substances 0.000 description 7
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 description 4
- 229910052637 diopside Inorganic materials 0.000 description 4
- 238000009282 microflotation Methods 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910000180 silicate apatite Inorganic materials 0.000 description 3
- 239000003784 tall oil Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- UTXPMECBRCEYCI-UHFFFAOYSA-N 2-[2-[2-[2-(4-nonylphenoxy)ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCC1=CC=C(OCCOCCOCCOCCO)C=C1 UTXPMECBRCEYCI-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 241000288049 Perdix perdix Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- LLSDKQJKOVVTOJ-UHFFFAOYSA-L calcium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ca+2] LLSDKQJKOVVTOJ-UHFFFAOYSA-L 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229940021013 electrolyte solution Drugs 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052587 fluorapatite Inorganic materials 0.000 description 1
- 229940077441 fluorapatite Drugs 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- ONHFWHCMZAJCFB-UHFFFAOYSA-N myristamine oxide Chemical compound CCCCCCCCCCCCCC[N+](C)(C)[O-] ONHFWHCMZAJCFB-UHFFFAOYSA-N 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229910052585 phosphate mineral Inorganic materials 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 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
- B03D1/02—Froth-flotation processes
- B03D1/021—Froth-flotation processes for treatment of phosphate ores
-
- 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- 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
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate ores
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physical Water Treatments (AREA)
Abstract
Calcium phosphate containing materials, e.g. apatite can be separated from contaminant materials, e.g. calcite and silicates, by a selective froth flotation process. This process uses a mixture of a class of amine oxides and a branched chain C16 to C20 fatty acid and provides a high usable concentration of the apatite with good separation from the gangue.
Description
ORE PURIFICATION
Field of the Invention:
This invention relates to a froth flotation process for ore purification. More particularly, the invention relates to a process for the separation of the phosphate mineral known as apatite from contaminants which are mined with it.
Background to the Invention:
Froth flotation has for many years been used to select from ground mineral ores desirable components and many chemicals have been employed for various purposes in the flotation processes hitherto used.
As is well known the principles of the process involve the preferential flotation of one component from the ground ore in the froth which rises to the top of the aqueous dispersion containing the selected chemicals, whilst other components of the ground ore pass through the system. Depending on the conditions, the desirable component can be floated out with the froth or, alternatively, passed out with the residual slurry for further separation at a later stage in the process.
The factors affecting these processes are highly complex and relate, obviously, to the type of ore under treatment, the chemicals used, the quality of the water used in the flotation process and many other factors such as the interaction of the flotation chemicals on each other and on the components of the ground ore to be treated.
Apatite is a group of calcium phosphate minerals which have the general formula Ca5 X(PO4)3 were X is a monovalent ion which may be F, C1, OH or d CO It occurs as hexagonal crystals, granular masses and other forms and is a major constituent of phosphate rock. This latter source comprises an apatite in association with calcium carbonate and other minerals, for example those which are silicate based.
This invention is particularly concerned with the extraction of apatite from ores containing significant amounts of calcite and silicate minerals. A typical ore to which the present invention can most readily be applied will contain between 5% and 35% apatite of the order of 10% to 40% calcite and the remainder various silicate compositions. In view of the large amounts of minerals which are treated by flotation processes, the cost effectiveness of the flotation chemicals is of great significance and even relatively minor improvements in yield can be of great commercial importance. Hitherto, the tendency has been to use relatively cheap materials such as tall oil, kerosene fractions and vegetable oils.
General description of the invention:
The invention provides a process for the selective froth flotation of calcium phosphate containing materials in an aqueous flotation bath in the presence of calcium carbonate which comprises performing the flotation in the presence of a mixture of i) an amine oxide of formula R1R2R3N-0 in which R1 is an alkyl radical containing 1 to 3 carbon atoms, R2 is an alkyl radical containing 1 to 3 carbon atoms, and R3 is an alkyl radical containing 6 to 22 carbon atoms and ii) a branched chain C16 to C20 fatty acid. This process provides a high usable concentration of the desired apatite with good separation from the gangue.
Usually the flotation will be performed at a pH in the range from about 8 to about 12, preferably about 9 to about 10. The amine oxide and branched fatty acid will usually be present in the mixture in a weight ratio of from about 1:10 to about 1:1, preferably from about 1:3 to about 1:1. The process of the invention is of particular value wherein the electrolyte content of the feedstock water is above about 500 ppm.
The invention extends to the calcium phosphate containing materials obtained as a product of the process of the invention.
Literature:
The applicants are aware of US 4337149 (Sherex
Chemical Co) which describes a froth flotation process using amine oxides as promoters in the separation of phosphate ore but this disclosure does not describe the use of amine oxides with branched fatty acids to obtain the benefit identified by the applicants. The Tennessee
Valley Authority disclosed the use of mixtures of branched
C16-C18 fatty acids to recover Florida phosphate ore in US
Defensive Publication T980002.
Test Method
Microflotation Experiments: These used a microflotation cell based on Partridge and Smith and further modified by Harris (Mintek). Flotation experiments were carried out in electrolyte solutions with compositions designed to mimic those in use at the Foskor plant (Phalaborwa area) Eastern Transvaal. The hardness of these waters are well in excess of levels reached under normal conditions in equilibration with the minerals in distilled water.
Sample Preparation: 2g crushed, sieved (45-106 Am) pure mineral (Canadian fluorapatite, Iceland spar calcite or Phalaborwa diopside) was stirred vigorously in distilled water for five minutes. At the end of this period, the dispersion was allowed to settle. The supernatant liquid and any suspended fines ('slimes') was decanted off and the mineral washed into a 600 ml beaker with 250 mls distilled water and held under constant stirring. 4.8 mls of solution A and 4.8 mls of solution B were introduced, in order to duplicate the electrolyte composition of fresh river water in which mineral is conditioned with flotation chemicals at the Foskor plant.
(i) Solution A Solution B
1 litre of distilled 1 litre of distilled
water containing water containing
10.29g CaCl2.2H2O 22.74g MgSO4.7H2O
2.05 NaCl 4.20g NaHCO3
0.75g KC1 0.21g NaF
Mineral Conditioning: The silicate slurry was adjusted to 9.5 (dil. NaOH) and x mls of 0.5% (w/w) sodium silicate solution was added to the slurry with continued stirring. The pH was then restored to 9.5 and the suspension left stirring for 15 minutes. After this, 2.0 mg of surfactant (as a 0.1 mg ml 1 solution) was added under continuous stirring and the pH restored to 9.5 if necessary. A further 15 minutes of stirring was then allowed for conditioning of the mineral. 1.2 mls of solution C and 1.2 mls of solution D were added to 200 mi distilled water which was then added to the slurry, still under continuous stirring. A final pH adjustment to 9,5 was then carried out if necessary. This solution addition allows duplication of the electrolyte composition of a mixture of river water and recycled plant water ('reclaimed water') in which apatite flotation takes place at Foskor. The slurry was conditioned for a final 15 minutes.
(ii) Solution C Solution D
1 litre distilled 1 litre distilled
water containing water containing
44.10g CaC12.2H2O 236.54g of MgSO4.7H2O 11.07g NaCl 0.87g of NaHCO3
0.84g of NaF
22.62g of K2SO4
90.88g of Na2SO4
The liquid/mineral slurry was then transferred to the microflotation cell, washing with distilled water to ensure quantitative transfer of the mineral and to make up a total volume of 600 ml (the volume of the micro-flotation apparatus).
Flotation of Mineral: Nitrogen gas was passed through the suspended mineral in the cell at the rate of .1 13 ml min for 5 minutes. At the end of this time, the gas flow was stopped and the mineral floated was collected, oven dried and weighed.
These test procedures were followed using tetradecyldimethylamine oxide obtainable from Akzo under the trade name Aromox DMl4D-W as the amine oxide component and isostearic acid obtainable from Unichema under the trade name Prisorene 3508 as the branched fatty acid. The tall oil was of commercial standard the nonionic surfactant was Nonylphenyltetraethyoxylate obtained from
Union Carbide under the trade name Tergitol NP-4. The sodium silicate solution used had a weight ratio of
Si2:Na2O of 2:1 and was obtained from Crosfield Chemicals under the tradename Crystal 120A. Comparative experiments were performed using a mixture of the amine oxide: branched fatty acid in a weight ratio of 3:7 at a level of 2 mg in the test method. This combination was compared with mixtures of each component with standard flotation components as currently employed at Foskor .The results are given in Tables I, II and III. NM indicates no measurements was made.
The term 'selectivity' is a measure of the separation of the desired apatite and the calcite. It is the difference between the percentages of these components which are floated.
Table I (tall oil and amine oxide)
Volume (mls) % component floated
Silicate Apatite Calcite Diopside Selectivity Solution
Solution 0 35.3 30.2 1.9 5.1 1 12.8 28.3 NM (15.5) 2 7.5 21.1 NM (13.6) 3 4.4 17.6 NM (13.2) 5 4.2 7.9 1.4 (3.7)
Table II (iso-stearic acid and nonionic surfactant)
Volume (mls) % component floated
Silicate Apatite Calcite Diopside Selectivity Solution
Solution 0 62.8 57.0 6.4 5.8 1 57.0 43.9 NM 13.1 2 27.5 38.8 NM (1.3) 3 17.8 36.4 NM (18.6) 5 16.5 24.9 1.6 (8.4)
Table III (iso-stearic acid and amine oxide)
Volume (mls) % component floated
Silicate Apatite Calcite Diopside Selectivity Solution
Solution 0 50.5 29.8 0.8 20.7 1 46.1 19.5 NM 26.6 2 49.5 12.2 NM 37.3 3 32.6 13.8 NM 18.8 4 16.8 NM NM NM 5 8.2 14.0 0.5 (5.8) 8 NM 7.8 NM NM
These results demonstrate the use of amine oxides and branched fatty acids together provide a high usable flotation of the desired apatite together with good separation from the gangue components.
Claims (6)
1. A process for the selective froth flotation of calcium phosphate containing materials in an aqueous flotation bath in the presence of calcium carbonate which comprises performing the flotation in the presence of a mixture of i) an amine oxide of formula R1R2R3N-0 in which
R1 is an alkyl radical containing 1 to 3 carbon atoms, R2 is an alkyl radical containing 1 to 3 carbon atoms, and R3 is an alkyl radical containing 6 to 22 carbon atoms and ii) a branched chain C16 to C20 fatty acid.
2. A process according to claim 1 wherein the flotation is performed at a pH in the range from about 8 to about 12, preferably about 9 to about 10.
3. A process according to claim 1 or 2 when the amine oxide and branched fatty acid are present in the mixture in a weight ratio of from 1:10 to 1:1, preferably from 1:3 to 1:1.
4. A process according to any preceding claim wherein the electrolyte content of the feedstock water is at least about 500 ppm.
5. A process according to claim 1 substantially as herein described.
6. Calcium phosphate containing materials concentrated by the process of any preceding claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08718420A GB2207619A (en) | 1987-08-04 | 1987-08-04 | Ore purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08718420A GB2207619A (en) | 1987-08-04 | 1987-08-04 | Ore purification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8718420D0 GB8718420D0 (en) | 1987-09-09 |
| GB2207619A true GB2207619A (en) | 1989-02-08 |
Family
ID=10621789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08718420A Withdrawn GB2207619A (en) | 1987-08-04 | 1987-08-04 | Ore purification |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2207619A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5147528A (en) * | 1990-04-12 | 1992-09-15 | Falconbridge Limited | Phosphate beneficiation process |
| WO2003089144A1 (en) * | 2002-04-20 | 2003-10-30 | Clariant Gmbh | Use of fatty amine salts in conjunction with fatty acids as auxiliary agents for the flotation of potassium salts (sylvinite) |
| CN103041928A (en) * | 2012-12-21 | 2013-04-17 | 张飞 | Carbonate type phosphorite foam flotation reagent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1987
- 1987-08-04 GB GB08718420A patent/GB2207619A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| US DEFENSIVE PUBLICATION T980002 * |
| WO 81/00527 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5147528A (en) * | 1990-04-12 | 1992-09-15 | Falconbridge Limited | Phosphate beneficiation process |
| WO2003089144A1 (en) * | 2002-04-20 | 2003-10-30 | Clariant Gmbh | Use of fatty amine salts in conjunction with fatty acids as auxiliary agents for the flotation of potassium salts (sylvinite) |
| CN103041928A (en) * | 2012-12-21 | 2013-04-17 | 张飞 | Carbonate type phosphorite foam flotation reagent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8718420D0 (en) | 1987-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |