EP2885080A1 - Collecteurs pour l'enrichissement de minerais - Google Patents
Collecteurs pour l'enrichissement de mineraisInfo
- Publication number
- EP2885080A1 EP2885080A1 EP13756648.5A EP13756648A EP2885080A1 EP 2885080 A1 EP2885080 A1 EP 2885080A1 EP 13756648 A EP13756648 A EP 13756648A EP 2885080 A1 EP2885080 A1 EP 2885080A1
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- EP
- European Patent Office
- Prior art keywords
- carbon atoms
- collector
- formula
- compound
- group
- 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.)
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Classifications
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- 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
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- 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
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- 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
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- 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
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- 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 use of cationic collectors in flotation processes for the enrichment of ores, more particularly in reverse flotation processes for the enrichment of ores, especially for the enrichment of ores containing silicates .
- Flotation consists of extracting minerals from ore suspensions, generally aqueous suspensions, making more hydrophobic (less wettable by water) particles to float, using reagents, generally called "collectors" .
- the direct flotation process refers to processes by which floated particles are valuable ores, while the reverse flotation process refers to processes by which floated particles are the impurities to be extracted from valuable ores.
- the flotation process generally takes place in a cell containing an aqueous suspension of the ores to be treated and a generator of air bubbles. At least one collector is added and the collector or collectors adsorb on the surface of the particles of minerals or impurities to be removed (case of reverse flotation), increasing the attachment of the particles with the air bubbles during the collision.
- the flotation of minerals is generally performed using cationic collectors.
- Cationic collectors are molecules that are at least partially positively charged when added in an aqueous environment at an appropriate pH.
- cationic collectors is included herein as organic collecting compounds containing at least one amino group.
- Such cationic collectors are already known, widely used, and include p. ex. fatty amines and their salts, fatty propylene polyamines and their salts, alkyl ether amines and alkyl ether diamines and their salts, quaternary ammonium salts, imidazoline derivatives, alkoxylated amines and the like.
- U.S. Patent 5,261,539 proposed alkoxylated alkylguanidines in Cs C2 4 containing 1 to 10 alkoxy groups, alkoxylated fatty alkyl amines in Cs-C2 4 containing 1 to 6 alkoxy groups and mixtures thereof, as cationic collectors to remove quartz, micaceous minerals, chlorite, pyrite and other mineral impurities from finely ground calcium carbonate.
- This patent discloses higher calcium carbonate recoveries compared to Alkazene ® , an imidazoline type collector.
- US Pat. No. 4,995,965 claims a mixture containing at least one compound from the group comprising a hydroxypropylated quaternary ammonium compound, asymmetric dialkyldimethyl quaternary ammonium compounds and dialkylhexahydropyrimidine.
- US Patent 5,540,337 claims a flotation material based on alkyloxyalkaneamines free of acrylonitrile.
- WO 2007/122148 describes the combination of at least two collectors, belonging to the fatty quaternary ammonium salts or the quaternary ammonium compounds of bis-imidazoline, and more preferably a combination of two quaternary ammonium salts for the inverse foam flotation of a calcite ore.
- WO2008 / 084391 specifically claims a calcium carbonate purification process using as collector at least one compound which is a quaternary imidazolium methosulfate, more particularly the aminoethylimidazolium methylsulfate of 1-methyl- 2-norologyyl-3-oleic acid.
- US patent application 2009/0152174 claims a mixture of alkyletheramine, alkyletherdiamine, alkylamine or a quaternary ammonium salt with a fatty triamine corresponding to the formula RN- [A]. -NH 2 ] 2, for use as an improved collector for the flotation of silicates. Examples are given for reverse flotation of silicates in calcite. The most effective mixture indicated in the examples is a mixture of 29% fatty triamine with 71% of the standard quaternary ammonium salt (dicocoalkyldimethylammonium chloride).
- a common feature of all known enrichment processes is that the collectors, which are inherently attached to the floated particles, remain in the residues. It is known that most amines and amine derivatives exhibit aquatic and environmental toxicity. In order to reduce the environmental impact, studies have been carried out to improve the performance of the flotation reagents, thus leading to a reduced dosage of the flotation reagents used. From the prior art, it is clearly taught to those skilled in the art that effective collectors for the flotation of silicates, especially in calcium carbonate ores, have been developed in recent years, these efficient collectors being mainly mixtures of cationic reagents containing at least one cationic molecule permanently charged (at least one quaternary nitrogen atom in the molecule).
- the effectiveness of the flotation step is evaluated by measuring the yield of the product, which must be as high as possible (low losses of calcite in the foam), and the amount of Insoluble materials in the acids in the products (remaining silicates), which should be as low as possible.
- a first object of the present invention is to provide an effective reagent for mineral mineral foam flotation, which is environmentally friendly, i.e. less toxic and / or more biodegradable than collectors already known in the state of the art.
- Another object of the present invention is to provide an effective reagent (or collector) for the flotation of mineral ore foam, which is respectful of the environment, i.e. less toxic and / or more biodegradable than collectors already known in the state of the art, and which allows to obtain satisfactory enrichment yields.
- an effective reagent or collector for the flotation of mineral ore foam, which is respectful of the environment, i.e. less toxic and / or more biodegradable than collectors already known in the state of the art, and which allows to obtain satisfactory enrichment yields.
- the collector comprises at least one of the following compounds of formula (1) which comprises no quaternary ammonium atom.
- the present invention relates to a collector for the enrichment by flotation of an aqueous suspension of ores, said collector comprising at least one compound of formula (1):
- Ri represents a hydrocarbon group containing from 6 to 30 carbon atoms
- Al represents an alkylene group containing from 1 to 6 carbon atoms
- E 1 , E 2 and E 3 which are identical or different from one another, are chosen independently from alkylene oxide groups containing from 1 to 6 carbon atoms,
- N, n 2 and n 3 which are identical or different from each other, and independently of each other, each represent an integer whose value is from 1 to 20, and
- the compounds of formula (1) may also be used in the form of their addition salts with one or more acids, said acid or acids being chosen from inorganic and organic acids, including, without being limited to, hydrochloric acid, acetic acid, phosphoric acid, sulfuric acid, alkane (eg, methane) sulfonic acid, toluene sulfonic acid and the like.
- the collector of the present invention comprises at least one compound of formula (1) as defined above, and is essentially free, more preferably is free, of any compound containing a quaternary ammonium.
- mixtures of compounds of formula (1) containing various radicals R 1 are included in the present invention, for example mixtures of compounds of formula (1) in which the various radicals R 1 contain from 16 to 18 carbon atoms.
- R 1 is a linear hydrocarbon group, cyclic or branched, saturated or unsaturated, containing from 6 to 30, preferably from 8 to 26, more preferably preferred from 12 to 22 carbon atoms, said group optionally containing one or more rings.
- preferred compounds of formula (1) are those in which A 1 represents an alkylene group containing from 1 to 6 carbon atoms, preferably from 2 to 6 carbon atoms, more preferably 2, 3 or 4 carbon atoms.
- Preferred compounds of formula (1) are those wherein A 1 is propylene.
- E 1 , E 2 and E 3 are chosen from methylene oxide - (CH 2 -O) -, ethylene oxide - (CH 2 -CH 2 -O) ) -, propylene oxide - (CH 2 -CH (CH 3 ) -O) - and / or - (CH (CH 3 ) -CH 2 -O) -, and butylene oxide - (CH ( CH 2 -CH 3 ) -CH 2 -O) - and / or - (CH 2 -CH (CH 2 -CH 3 ) -O) -, E 1 , E 2 and E 3 being connected to the nitrogen atom respective by their sp 2 carbon atom.
- E 1 , E 2 and E 3 are selected from ethylene oxide - (CH 2 -CH 2 -O) -, and propylene oxide - (CH 2 - CH (CH 3 ) -O) and / or - (CH (CH 3 ) -CH 2 -O) -. More preferably, from 70 mole% to 100 mole% of all the alkylene oxide groups present in the compound of formula (1) are ethylene oxide groups, and 0 mole% to 30 mole%. moles are propylene oxide groups. Even more preferably, E 1 , E 2 and E 3 are identical radicals and are selected from ethylene oxide and propylene oxide.
- E 1 , E 2 and E 3 are all identical radicals and are ethylene oxide groups. It should also be understood that E 1 , E 2 and E 3 can each comprise two or more different alkylene oxide groups, which can be arranged in a sequenced or random distribution.
- the compounds of formula (1) are those in which ni, n 2 and n 3 , which are identical or different, independently represent an integer whose value is from 1 to 10, so that more preferably 1 to 5, even more preferably 1 to 3. Preference is also given to compounds of formula (1) wherein the sum of n + n 2 + n 3 is strictly less than 10.
- p is preferably 1 or 2. More preferably, p is 1.
- the compound of formula (1) above has one or more of the following characteristics:
- R 1 represents a linear or branched hydrocarbon group containing from 6 to 30 carbon atoms, preferably from 8 to 26, more preferably from 12 to 22 carbon atoms, optionally containing one or more unsaturations, in the form of a or more than one double and / or three
- a 1 represents a linear or branched alkylene group containing from 1 to 6 carbon atoms, preferably from 2 to 6 carbon atoms, particularly preferably 2, 3 or 4 carbon atoms,
- E 1 , E 2 and E 3 are independently selected from the group ethylene oxide (EO), the propylene oxide group (OP) and the butylene oxide group (OB), preferably from the EO group and the OP group, more preferably, E i, E 2 and E 3 each represent an EO group,
- N, n 2 and n 3 which are identical or different, independently represent an integer whose value is from 1 to 20, preferably from 1 to 10, and the sum
- the compound of formula (1) above has one or more of the following characteristics:
- R 1 represents a linear alkyl group containing from 8 to 26, more preferably from 12 to 22 carbon atoms
- Al represents a linear alkylene group containing from 2 to 4 carbon atoms, for example a - (CH 2 ) 3 (propylene) group,
- E 1 , E 2 and E 3 are independently selected from the group E E and the group OP, more preferably E 1 , E 2 and E 3 each represent an EO group,
- N, n 2 and n 3 which are identical or different, independently represent an integer whose value is from 1 to 5, preferably from 1 to 3, and the sum ni + n 2 + n 3 ranges from 3 to 9 , for example the sum ni + n 2 + n 3 is 3,
- P is 1 or 2, and preferably 1.
- the compound of formula (1) above has all the following characteristics:
- R 1 represents a linear alkyl group containing from 8 to 26, more preferably from 12 to 22 carbon atoms
- Al represents a linear alkylene group containing from 2 to 4 carbon atoms, for example a - (CH 2 ) 3 (propylene) group,
- E 1 , E 2 and E 3 are independently selected from the group E E and the group OP, more preferably E 1 , E 2 and E 3 each represent an EO group,
- N, n 2 and n 3 which are identical or different, independently represent an integer whose value is from 1 to 5, preferably from 1 to 3, and the sum ni + n 2 + n 3 ranges from 3 to 9 , for example the sum ni + n 2 + n 3 is 3,
- P is 1 or 2, and preferably 1.
- the compounds of formula (1) are chosen from alkoxylated fatty C 6 -C 3 o -polyamine alkyls, and even more advantageously from ethoxylated or propoxylated fatty C 6 -C 3 o-diamino diamines.
- polyamine refers to a compound comprising two or more amine groups, the amino groups being optionally substituted, i.e. that the two or more amino groups may be the same or different and may be primary, secondary or tertiary amine groups.
- the compounds of formula (1) are commercially available or can be prepared by known preparation techniques.
- the compounds of formula (1) can easily be obtained by condensation of a fatty polyamine with one or more alkylene oxides.
- a typical example of a compound of formula (1) is an ethoxylated tallow diamine, for example a tallow diamine reacted with 3 molecules of ethylene oxide, typically N ', N', N'-tri hydroxyethyl-N-tallow (or arachidyl or behenyl) propylenediamine (tallow diamine or arachidyl- or behenyl-diamine with 3 moles of ethylene oxide), having a CAS No. 61790-85-0.
- This compound is particularly interesting because it is liquid at room temperature, easy to handle, easily dispersible in water, i.e. does not need to be totally or partially salified, at the dosage level used in the flotation process (typically from 10 ppm to 1000 ppm). Moreover, this compound is biodegradable.
- N, N ', N'-tri-hydroxyethyl-N-oleylpropylenediamine No. CAS 103625-43-0
- N, N ', N'-tri-hydroxyethyl-N-laurylpropylenediamine CAS No. 25725-44-4
- propoxylated N-tallow-alkyltrimethylenediamines CAS No. 68603-75- 8
- the collector of the present invention for the enrichment by flotation of aqueous suspensions of ores, may consist of one or more compounds of formula (1) as defined above, alone.
- one or more of the compounds of formula (1) may advantageously be formulated with any one or more conventional additives known in the field of flotation.
- Nonlimiting examples of such additives are pH adjusting agents, such as sodium or potassium carbonate and sodium or potassium hydroxide; solvents (water, organic solvents and mixtures thereof); depressants, such as starch, quebracho, tannin, dextrin and guar gum, and polyelectrolytes, such as polyphosphates and waterglass, which have a dispersing effect, often combined with a depressing effect.
- pH adjusting agents such as sodium or potassium carbonate and sodium or potassium hydroxide
- solvents water, organic solvents and mixtures thereof
- depressants such as starch, quebracho, tannin, dextrin and guar gum
- polyelectrolytes such as polyphosphates and waterglass
- Foaming agents such as methylisobutylcarbinol, thethoxybutane, pine oil, terpineol and polypropylene oxide and its alkyl ethers, among which methylisobutylcarbinol, thethoxybutane, pine oil, terpineol are preferred foaming agents.
- preferred conventional additives are generally foaming agents, of which terpineol is the most commonly used.
- the compound of formula (1) can also advantageously be formulated with any other conventional collector compound known in the field of flotation, provided that:
- etheramines and “ether diamines” mean compounds comprising at least one ether group and respectively an NH 2 terminal group and an NH 2 terminal group, as well as another primary, secondary amine group. or tertiary.
- Examples of conventional collectors that can be used with the compound of formula (1) include, but are not limited to:
- fatty poly (alkyleneamines) and their salts e.g. ex. poly (ethyleneamines), poly (propyleneamines) and their salts, as well as their alkoxylated derivatives,
- N-fatty alkylaminocarboxylic acids and their salts e.g. ex. N-fatty alkylaminopropionic acids and their salts
- N, N-di (tallow carboxyethyl) -N-hydroxyethyl methylsulphate N-methylammonium (CAS No. 91 995-81-2), N-cocoaminopropionic acid (CAS No. 84812-94-2), N-laurylaminopropionic acid (CAS No. 1462- 54-0), N-myristyl- ⁇ -aminopropionic acid (CAS No. 14960-08-8), their addition salts with one or more acids, the sodium salt of N-lauryl- aminopropionic acid (CAS No. 3546-96-1), salt N-laurylaminaminopropionic acid triethanolamine (CAS No. 14171-00-7), triethanolamine salt of N-myristylaminopropionic acid (CAS No. 61791 -98-8), and the like as well as mixtures of two or more of the above compounds in all proportions.
- cationic compounds which can be used with the compound of formula (1) as a collector according to the present invention also include, but are not limited to, dicocodimethylammonium chloride (CAS No. 61789-77-3). ), cocodimethylbenzylammonium chloride (CAS No. 61789-71 -7), tallow dimethylbenzylammonium chloride (CAS No. 61789-75-1), and the like, provided that the sum of ni + n 2 + n 3 in the compound of formula (1) is less than 10.
- the collector of the present invention comprises from 1% by weight to 100% by weight of at least one compound of formula (1), more preferably from 10% by weight to 100% by weight, typically from 20% by weight to 100% by weight, of at least one compound of formula (1), advantageously from 1% by weight to 99% by weight of at least one compound of formula (1) ), more preferably from 10% by weight to 99% by weight, typically from 20% by weight to 99% by weight of at least one compound of formula (1), based on the total amount of the compound (s) of formula (1) and other cationic compounds.
- the collector according to the present invention comprises at least one compound of formula (1) as described above, and at least one compound of formula (2):
- R21 represents a hydrocarbon group containing from 6 to 30 carbon atoms
- R22 and R23 which are identical or different, each independently represent a hydrocarbon group containing from 1 to 6 carbon atoms
- R2 4 represents hydrogen or a hydrocarbon group containing from 1 to 6 carbon atoms
- a 2 represents an alkylene group containing from 1 to 6 carbon atoms
- mixtures of compounds of formula (2) containing various radicals R21 are included in the present invention, for example mixtures of compounds of formula (2) in which the various radicals R21 contain from 16 to 18 carbon atoms.
- R21 is a linear, cyclic or branched, saturated or unsaturated hydrocarbon group, preferably a linear or branched unsaturated hydrocarbon group, containing from 6 to 30, preferably from 8 to 26, of more preferably from 12 to 22 carbon atoms, said group optionally containing one or more rings.
- the compounds of formula (2) may also be used in the form of their addition salts with one or more acids, said acid or acids being chosen from inorganic and organic acids, including, without being limited to, hydrochloric acid, acetic acid, phosphoric acid, sulfuric acid, alkane (eg, methane) sulfonic acid, toluene sulfonic acid and the like.
- Preferred compounds of formula (2) are those having one or more of the following characteristics:
- R 22 and R 2 which are identical or different, each independently represent a hydrocarbon group containing 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and are preferably selected from methyl, ethyl, propyl and butyl,
- R 24 represents hydrogen
- a 2 represents an alkylene group containing 1, 2, 3 or 4 carbon atoms, A 2 is preferably ethylene or propylene, A 2 is more preferably propylene, and
- Q is 1 or 2, q being preferably 1.
- the compounds of formula (2) are commercially available or may be prepared by known preparation techniques.
- the compounds of formula (2) can easily be obtained by condensation of an unsaturated fatty acid (eg rapeseed oil, tall oil) with an amine compound of formula (2 '). ):
- an unsaturated fatty acid eg rapeseed oil, tall oil
- R 22, R 2 3, R 24, A 2 and q are as defined above.
- dimethylaminopropylamine condensation products with an unsaturated fatty acid Ci 6 -C 8 such as rapeseed oil (CAS No. 85408-42-0) or tall oil (CAS No. 68650-79-3) are particularly interesting because they are liquid at room temperature (easy to handle), easily dispersible in water, i.e. do not need to be totally or partially salified, at the dosage level used in the flotation process (typically from 10 ppm to 1000 ppm), and have the additional advantage of being biodegradable.
- compounds of formula (2) are the condensation products of dimethylaminopropylamine with a coconut, palm, tallow and / or oleic fatty acid, and / or with a Ci 2 fatty acid (p (eg, lauric), and / or with a C 1 fatty acid (eg ricinoleic), and / or with a C 2 -C 22 fatty acid, and / or like.
- compounds of formula (2) are those having the following CAS numbers: 68188-30-7, 69278-64-4, 691400-76-7, 165586-99-2, 226994-25-8, 97552 -95-9, which are respectively the condensation products of dimethylaminopropylamine with soybean oil, castor oil, peanut oil, almond oil, avocado, fish oil.
- the collector according to the present invention thus preferably comprises, and more preferably consists of:
- one or more additives conventionally used in the state of the art, and for example chosen from pH adjusting agents, depressants, polyelectrolytes, foaming agents and the like.
- the collector according to the present invention preferably comprises, and more preferably consists of:
- one or more additives conventionally used in the state of the art, and for example chosen from pH adjusting agents, depressants, polyelectrolytes, foaming agents and the like.
- the collector according to the present invention preferably comprises, and more preferably consists of:
- one or more additives conventionally used in the state of the art, and for example chosen from pH adjusting agents, solvents, depressants, polyelectrolytes, foaming agents and the like.
- the collector according to the present invention preferably comprises, and more preferably consists of:
- a compound of formula (2) as defined above optionally one or more additives conventionally used in the state of the art, and for example chosen from pH adjusting agents, depressants, polyelectrolytes, foaming agents and the like.
- the collector according to the present invention comprises, and preferably consists of:
- the ratio by weight between the compound (s) of formula (1) and the compound (s) of formula (2) in the collector of the present invention may vary in large proportions, without any specific limitation. According to a preferred embodiment, this weight ratio is from 1: 99 to 99: 1, more preferably from 20:80 to 80:20, even more preferably from 40:60 to 60:40. Particularly satisfactory results are obtained with a mixture of a weight ratio of 50:50 of at least one compound of formula (1) and at least one compound of formula (2), and typically with a mixture of a weight ratio of 50:50 of one or more compounds of formula (1) and one or more compounds of formula (2).
- the present invention relates to the use of at least one collector, and preferably a collector, as defined above, for the direct or reverse flotation enrichment, of reverse preference, an aqueous suspension of ores containing minerals.
- the collector of the present invention is effective either in direct flotation processes or in reverse flotation processes.
- the collector of the present invention is particularly suitable for enriching aqueous suspensions of ores using the reverse flotation process.
- the use of the present invention is particularly effective for the enrichment of all types of ores containing impurities, and more specifically for the enrichment of carbonates (calcium and / or magnesium carbonates), phosphates and phosphates. iron ores, enrichment of calcium carbonates being particularly preferred.
- the use of the present invention is particularly suitable for the enrichment of all types of calcium carbonates (natural or crushed), such as limestone, chalk, marble, calcite, carbonate-containing materials.
- alkaline earth metals eg calcium carbonate calcium or gaylussite
- magnesium carbonates eg calcium carbonates containing magnesium carbonate, such as dolomite
- beryllium carbonates eg calcium carbonates containing magnesium carbonate, such as dolomite
- strontium carbonates e.g., strontium carbonates, barium carbonates, radium carbonates, and mixtures thereof.
- Natural calcium carbonate in the sense of the present invention is a calcium carbonate (calcite) obtained from natural sources, such as marble, limestone or chalk.
- ground calcium carbonate GCC is a natural calcium carbonate which is machined by a wet and / or dry treatment such as grinding, sieving and / or fractionation, for example by a cyclone or classifier.
- the aluminum oxides containing other elements such as sodium (eg diaoyudaoite), and other oxides, sulphates and sulphides, such as zinc oxides, zirconium dioxides, tin dioxide , lead carbonate, barium sulphate and zinc sulphide, including mixtures of two or more of the foregoing in all proportions.
- elements such as sodium (eg diaoyudaoite), and other oxides, sulphates and sulphides, such as zinc oxides, zirconium dioxides, tin dioxide , lead carbonate, barium sulphate and zinc sulphide, including mixtures of two or more of the foregoing in all proportions.
- a white pigment is a pigment which has a white color.
- the white color of the white pigments is mainly based on the relatively low absorption of light in combination with non-selective light scattering of visible light on the pigments.
- the White pigments in the present invention are inorganic white pigments that can be obtained naturally or synthetically.
- Non-white pigments include, but are not limited to, minerals selected from phosphates, potassium chloride, ores containing a metal, "metal” meaning p. ex. iron, platinum, aluminum, nickel, copper and the like.
- the minerals which are effectively removed, or at least whose content in ores is significantly reduced by flotation may be of any type known to those skilled in the art, preferably provided that they are negatively charged to pH. which flotation is carried out.
- said minerals include, but are not limited to, insoluble graphite, iron sulfides (eg, pyrite, marcasite, magnetopyrite, pyrrhotite, mackinawite), iron oxides (eg, wustite, magnetite) iron hydroxides and iron oxyhydroxides (eg, bernalite, goethite, lepidocrocite, feroxyhyte, ferrihydrite, Firmatmannite, akaganite), silica, silicates (neosilicates, sorosilicates, cyclosilicates, inosilicates, phyllosilicates) , tectosilicates and / or amorphous silicates, such
- the minerals that are effectively removed, or at least the ore content of which is significantly reduced, by direct or inverse, preferably inverse, foam flotation of ores include silicates, preferably quartz minerals, such as quartz, tridymite and / or cristobalite, more preferably quartz, as well as mixtures of quartz and one or more additional silicates, even more preferably quartz alone.
- silicates preferably quartz minerals, such as quartz, tridymite and / or cristobalite, more preferably quartz, as well as mixtures of quartz and one or more additional silicates, even more preferably quartz alone.
- the use of the present invention is particularly well suited for the enrichment of calcium carbonate, and the minerals (impurities) that are effectively removed typically include silicates, preferably quartz.
- one or more compounds of formula (1) When one or more compounds of formula (1) are used with one or more other compounds as defined above, for example those of formula (2), they may be added separately, but are preferably added together under the form of an individual flotation reagent (collector).
- each of the compound (s) of formula (1) and of the compound or compounds of formula (2) which may represent the total amount, by weight, of the collector according to the invention, for use in the process of flotation enrichment of an aqueous suspension of ores according to the present invention may vary within wide limits depending on the nature of the ores to be purified and the nature and amount of impurities contained therein.
- the total amount of collector is from 10 ppm to 5000 ppm by weight, preferably from 50 ppm to 1000 ppm, for example from 200 ppm to 500 ppm, based on the amount of ore (s) to be enriched.
- Flotation experiments in the laboratory are performed in an Outotec flotation cell, filled with 2 L of water. Calcium carbonate (800 g) is added to obtain a suspension at 30% by weight. The calcium carbonate sample used for the experiment contains between 2.5% by weight and 3% by weight of impurities. The flotation experiment takes place at neutral pH.
- the flotation reagent (collector) is weighed and added directly into the flotation cell.
- the quantity introduced is expressed in ppm by weight relative to the initial amount of CaCO3 introduced into the suspension.
- the suspension is stirred for 5 min (conditioning time) at 1200 rpm without air bubbles, followed by 20 to 30 min maximum flotation. Air is finally bubbled into the suspension, the air flow being set at 3 L-min "1 .
- the purified carbonate sample is filtered, weighed after drying and analyzed.
- An attack of hydrochloric acid is followed by a second drying and weighing in order to measure the amount of acid-insoluble compounds (the remaining silicates).
- the attack of HCI aims to obtain complete dissolution of the calcium carbonate by appropriate dissolution with a concentrated solution of hydrochloric acid (typically 10%).
- the remaining minerals that are not digested correspond to the silicates (impurities).
- the foam is also rinsed and filtered. It is then dried, weighed, attacked with HCl, dried and weighed again to deduce the amount of impurities and losses of calcium carbonate.
- Collector A (comparative) dicoco chloride, dimethylammonium, CAS No. 61789-77-3, 75% by weight in isopropanol (15% by weight) and water (10% by weight);
- B-collector (comparative) coconut chloride, dimethylbenzylammonium CAS No. 61789-71 -7, 50% by weight in water;
- ethoxylated tallow monoamine CAS No. 61791-26-2 obtained by ethoxylation of a tallow fatty amine with 20 moles of ethylene oxide per mole of amine
- Collector D N, N ', N'-tri-hydroxyethyl-
- Collector F N, N ', N'-tri-hydroxyethyl-N-oleylpropylenediamine, CAS No. 103625-43-0;
- Collector G N, N ', N'-tri-hydroxyethyl-N-coco-propylenediamine, CAS No. 25725-44-4;
- H collector N-tallow alkyl, ethoxylated trimethylenediamine, obtained by ethoxylation of N-tallow-1,3-propylenediamine with 7 moles of ethylene oxide per mole of diamine ;
- Collector I ethoxylated N-arachidylbéhénylpropylènediamine, obtained by ethoxylation of N-arachidylbéhényl-1,3-propanediamine with 7 moles of ethylene oxide per mole of diamine;
- J collector (comparative) N-tallow-alkyl, ethoxylated propylenediamine, (CAS RN 61790-85-0), obtained by ethoxylation of N-tallow-1,3-propylenediamine with 12 moles of ethylene oxide per mole diamine;
- K-collector tallol, N- (3- (dimethylamino) propyl)) amide, (CAS No. 68650-79-3);
- L collector fish oil, N- (3- (dimethylamino) propyl) amide, (CAS No. 97552-95-9);
- N-collector (comparative) isodecyloxypropyl-1,3-diaminopropane (CAS No. 72162-46-0);
- a collector which is a mixture of 75% by weight of hydrogenated tallow dimethylbenzylammonium chloride (CAS No. 61789-75-1) in 15% by weight of propan-2-ol and 10% by weight of water weight;
- Q collector (comparative) mixture of 65% by weight of N-coco- ⁇ -aminopropionic acid (CAS no. 84812-94-2), 10% by weight of N-cocoamine (CAS RN 61788- 46-3) and 25% by weight of propan-2-ol.
- Collectors D and E do not require any partial salification before use, unlike the commercial etheramine and ether-diamine collectors.
- collector D leads to a very small amount of remaining impurities (acid-insoluble fraction of 0.1% by weight).
- the collector D seems less selective (higher losses of CaCO3).
- the use of a mixture of the D and E collectors leads to a smaller quantity of impurities (0.08% instead of 0.1%), while maintaining the losses of calcium carbonate at a reasonable level ( ⁇ 3%).
- the use of collectors containing a compound of formula (1) according to the invention provides even better results when combined / combined with a compound of formula (2).
- Collectors D and E are biodegradable.
- collector of the present invention can advantageously be formulated with well known conventional additives, such as a well-known foaming agent, terpineol in this example.
- the formulation of 90% by weight of D + 10% by weight of terpineol collects more impurities than the collector D alone, while the losses of calcite are only slightly increased.
Landscapes
- Paper (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261684949P | 2012-08-20 | 2012-08-20 | |
| FR1257887A FR2994535B1 (fr) | 2012-08-20 | 2012-08-20 | Collecteurs pour enrichissement de minerais |
| PCT/FR2013/051864 WO2014029931A1 (fr) | 2012-08-20 | 2013-08-01 | Collecteurs pour l'enrichissement de minerais |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2885080A1 true EP2885080A1 (fr) | 2015-06-24 |
| EP2885080B1 EP2885080B1 (fr) | 2022-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13756648.5A Active EP2885080B1 (fr) | 2012-08-20 | 2013-08-01 | Collecteurs pour l'enrichissement de minerais |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20140048453A1 (fr) |
| EP (1) | EP2885080B1 (fr) |
| ES (1) | ES2928675T3 (fr) |
| FR (1) | FR2994535B1 (fr) |
| WO (1) | WO2014029931A1 (fr) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SI2700680T1 (sl) * | 2012-08-20 | 2015-09-30 | Omya International Ag | Postopek za proizvodnjo proizvodov, ki vsebujejo beli pigment |
| CN105233993A (zh) * | 2015-11-16 | 2016-01-13 | 湖南有色金属研究院 | 一种隐晶质石墨矿浮选的组合捕收剂 |
| CN106140485B (zh) * | 2016-08-03 | 2018-05-25 | 北京东信龙石油技术有限公司 | 一种新型浮选剂组合物 |
| CN107520058B (zh) * | 2017-08-23 | 2019-05-17 | 中南大学 | 一种金红石用选矿组合试剂及其选矿方法 |
| CN108212503B (zh) * | 2018-02-10 | 2020-05-05 | 广西华洋矿源材料有限公司 | 一种重晶石的提纯选取方法 |
| CN108855630A (zh) * | 2018-06-26 | 2018-11-23 | 河南易成新能源股份有限公司 | 石墨负极材料的浮选分离方法 |
| CN109092567A (zh) * | 2018-08-02 | 2018-12-28 | 湖南柿竹园有色金属有限责任公司 | 一种锡的高效捕收与强选择性抑制剂联合工艺 |
| CN109847945A (zh) * | 2018-12-27 | 2019-06-07 | 东北大学 | 一种利用阳离子捕收剂进行赤铁矿反浮选的方法 |
| CN113874118B (zh) * | 2019-06-06 | 2024-04-23 | 巴斯夫欧洲公司 | 用于浮选方法的捕收剂 |
| WO2021005020A1 (fr) | 2019-07-11 | 2021-01-14 | Basf Se | Procédé de flottation d'un minerai de fer contenant du silicate avec un collecteur d'amidoamine |
| US20220266263A1 (en) | 2019-07-24 | 2022-08-25 | Basf Se | Collector composition |
| CN111068925B (zh) * | 2019-12-23 | 2020-10-16 | 中南大学 | 2-(3-取代脲基)-n-羟基-2-氧乙酰亚胺基氰化物类化合物在浮选中的应用 |
| EP4271525A1 (fr) | 2021-01-04 | 2023-11-08 | Basf Se | Procédé de flottation d'un minerai de fer contenant du silicate |
| EP4026620A1 (fr) | 2021-01-12 | 2022-07-13 | Basf Se | Procédé de flottation d'un minerai de fer contenant du silicate |
| CN117259014B (zh) * | 2023-10-10 | 2025-10-31 | 中南大学 | 酯基多胺类化合物在矿物浮选中的应用 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4622158A (en) * | 1983-11-09 | 1986-11-11 | The Lubrizol Corporation | Aqueous systems containing organo-borate compounds |
| US4797202A (en) * | 1984-09-13 | 1989-01-10 | The Dow Chemical Company | Froth flotation method |
| US5261539A (en) * | 1992-10-07 | 1993-11-16 | American Cyanamid Company | Flotation process for purifying calcite |
| DE102008056338B4 (de) * | 2008-11-07 | 2012-02-16 | Clariant International Ltd. | Flotationsreagenz für silikathaltige Mineralien |
| US8372336B2 (en) * | 2009-07-03 | 2013-02-12 | Akzo Nobel Chemicals International B.V. | Polymeric corrosion inhibitors |
-
2012
- 2012-08-20 FR FR1257887A patent/FR2994535B1/fr active Active
-
2013
- 2013-08-01 EP EP13756648.5A patent/EP2885080B1/fr active Active
- 2013-08-01 ES ES13756648T patent/ES2928675T3/es active Active
- 2013-08-01 WO PCT/FR2013/051864 patent/WO2014029931A1/fr not_active Ceased
- 2013-08-15 US US13/967,893 patent/US20140048453A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014029931A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2928675T3 (es) | 2022-11-21 |
| FR2994535A1 (fr) | 2014-02-21 |
| WO2014029931A1 (fr) | 2014-02-27 |
| US20140048453A1 (en) | 2014-02-20 |
| EP2885080B1 (fr) | 2022-07-27 |
| FR2994535B1 (fr) | 2014-08-08 |
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