EP0270933B1 - Tensidmischungen als Sammler für die Flotation nichtsulfidischer Erze - Google Patents

Tensidmischungen als Sammler für die Flotation nichtsulfidischer Erze Download PDF

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Publication number
EP0270933B1
EP0270933B1 EP87117456A EP87117456A EP0270933B1 EP 0270933 B1 EP0270933 B1 EP 0270933B1 EP 87117456 A EP87117456 A EP 87117456A EP 87117456 A EP87117456 A EP 87117456A EP 0270933 B1 EP0270933 B1 EP 0270933B1
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alkyl
flotation
ore
component
collector
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German (de)
English (en)
French (fr)
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EP0270933A2 (de
EP0270933A3 (en
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Rita Köster
Wolfgang Dr. Von Rybinski
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Henkel AG and Co KGaA
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Henkel AG and Co KGaA
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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
    • B03D1/012—Organic compounds containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • 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
    • 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
    • B03D1/014—Organic compounds containing phosphorus
    • 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
    • B03D2203/04—Non-sulfide ores

Definitions

  • the invention relates to the use of end-capped fatty alcohol polyethylene glycol ethers as co-collectors in the flotation of non-sulfidic ores together with anionic surfactants.
  • Non-sulfidic minerals for the purposes of the present invention are, for example, apatite, fluorite, scheelite, barite, iron oxides and other metal oxides, for example the oxides of titanium and zirconium, and certain silicates and aluminosilicates.
  • the ore is first crushed and dry, but preferably wet, and suspended in water.
  • collectors are usually added, often in connection with foaming agents and possibly other auxiliary reagents such as regulators, pushers (deactivators) and / or stimulants (activators), which support the separation of the valuable minerals from the gangue minerals in the ore during the subsequent flotation.
  • these reagents are usually allowed to act on the finely ground ore for a certain time (conditioning).
  • the collector ensures that the surface of the minerals is rendered hydrophobic, so that these minerals adhere to the surface gas bubbles formed during ventilation are caused.
  • the mineral components are made hydrophobic selectively in such a way that the undesirable components of the ore do not adhere to the gas bubbles.
  • the mineral-containing foam is stripped off and processed.
  • the aim of the flotation is to obtain the mineral of value of the ores in the highest possible yield and at the same time to obtain the best possible enrichment of the mineral.
  • Anion and cationic surfactants are primarily used as collectors in the flotative processing of ores.
  • Known anionic collectors are, for example, saturated and unsaturated fatty acids, alkyl sulfates, alkyl ether sulfates, alkyl sulfosuccinates, alkyl sulfosuccinamides, alkyl benzene sulfonates, alkyl sulfonates, petroleum sulfonates, acyl lactylates, alkyl phosphates and alkyl ether phosphates.
  • nonionic surfactants are hardly used as collectors in flotation.
  • combinations of ionic and nonionic surfactants are also occasionally described as collectors.
  • the present invention was therefore based on the object of finding improved collectors in the sense of an economical design of the flotation processes, with which larger yields of valuable minerals are achieved either with constant collector quantities and constant selectivity, or, at least with constant collector quantities, at least constant valuable mineral yields.
  • Component a) is in particular alkyl or alkenyl polyethylene glycol ether of the formula I, R1 - O - (CH2CH2O) n - R2 I in which R1 is a straight-chain or branched alkyl or alkenyl radical having 8 to 22 carbon atoms, R2 is a straight-chain or branched alkyl radical having 1 to 8 carbon atoms or a benzyl radical and n is a number from 1 to 30.
  • end group-capped alkyl or alkenyl polyethylene glycol ethers defined above represent a class of substances known from the literature; they can be obtained by known methods of organic synthesis, see for example US-A-2,856,434, DE-B-15 20 647, DE-A-25 56 527, DE-A-30 11 237, EP-A-00 30 397 and DE-A-33 15 951).
  • These end group-capped alkyl or alkenyl polyethylene glycol ethers are more chemically stable than the corresponding polyglycol ethers with a free hydroxyl group, especially in an alkaline medium. Since such blocked alkyl or alkenyl polyglycol ethers also foam less in aqueous solutions than their starting compounds, they have a certain importance for (alkaline) cleaning processes with heavy use (see, for example, DE-A-33 15 951).
  • fatty alcohols can be used as starting materials for the preparation of the end-capped alkyl or alkenyl polyethylene glycol ethers to be used according to the invention.
  • the fatty alcohol component can consist of straight-chain and branched saturated and unsaturated compounds of this category with 8 to 22 carbon atoms, for example n-octanol, n-decanol, n-dodecanol, n-tetradekanol, n-hexadecanol, n-octadecanol, n-eikosanol, n-docosanol, n-hexadecenol, n-octadecenol, isotridecanol and isooctadecanol.
  • the fatty alcohols mentioned can individually form the basis for the end-capped alkyl or alkenyl polyethylene glycol ethers.
  • products are based on fatty alcohol mixtures used, which derive from the fatty acid content of fats and oils of animal or vegetable origin.
  • fatty alcohol mixtures can be obtained from the native fats and oils, inter alia via the transesterification of the triglycerides with methanol and subsequent catalytic hydrogenation of the fatty acid methyl esters.
  • Both the fatty alcohol mixtures obtained in the production process and suitable fractions with a limited chain length spectrum can serve as the basis for the production of the end-capped alkyl or alkenyl polyethylene glycol ethers.
  • synthetically obtained fatty alcohol mixtures for example the known Ziegler and oxo fatty alcohols, are also suitable as starting materials for the production.
  • alkyl or alkenyl polyethylene glycol ethers based on fatty alcohols having 12 to 18 carbon atoms ie. H. such compounds of formula I are used in which R1 corresponds to an alkyl or alkenyl radical having 12 to 18 carbon atoms.
  • the etherification of the free hydroxyl groups required for the end group closure of the alkyl or alkenyl polyethylene glycol ether can be carried out according to the methods described in the literature (for example from US Pat. No. 2,856,434, DE-B-15 20 647, DE-A-25 56 527, DE-A -30 11 237, EP-A-00 30 397 and DE-A-33 15 951) known processes.
  • Etherification is preferred the free hydroxyl groups under the known conditions of Williamson's ether synthesis with straight-chain or branched C1 to C8 alkyl halides or benzyl halides, for example with n-propyl iodide, n-butyl chloride, sec.-butyl bromide, tert.-butyl chloride, amyl chloride, tert.-amyl bromide, n-hexyl chloride, n-heptyl bromide, n-octyl chloride and benzyl chloride.
  • organic halide and alkali in a stoichiometric excess, for example from 100 to 200%, over the hydroxyl groups to be etherified.
  • a corresponding method is described in DE-A-33 15 951.
  • preference is given to using alkyl or alkenyl polyethylene glycol ethers which are end group-capped with n-butyl groups.
  • anionic surfactants are known as components b), which are known per se as collectors for the flotation of non-sulfidic ores.
  • anionic surfactants selected from the group consisting of fatty acids, alkyl sulfates, alkyl ether sulfates, alkyl sulfosuccinates, alkyl sulfosuccinamides, alkyl benzene sulfonates, alkyl sulfonates, petroleum sulfonates, acyl lactylates, alkyl phosphates and alkyl ether phosphates.
  • the fatty acids are, in particular, the straight-chain fatty acids with 12 to 18 carbon atoms, in particular those with 16 to 18 carbon atoms, obtained from vegetable or animal fats and oils, for example by fat splitting and optionally fractionation and / or separation by the crosslinking process. Oleic acid and tall oil fatty acid are of particular importance here.
  • Suitable alkyl sulfates are the water-soluble salts of sulfuric acid semiesters of fatty alcohols with 8 to 22 carbon atoms, preferably of fatty alcohols with 12 to 18 carbon atoms, which can be straight-chain or branched.
  • the preceding statements about the fatty alcohol component of the alkyl or alkenyl polyethylene glycol ether defined under a) apply mutatis mutandis to the fatty alcohol component of the sulfuric acid half-esters.
  • the sodium salts are preferably considered as water-soluble salts.
  • Suitable fatty alcohol ether sulfates are the known water-soluble salts of sulfuric acid semiesters based on addition products of 1 to 30 mol, preferably 2 to 15 mol, of ethylene oxide with fatty alcohols having 8 to 22, preferably 12 to 18, carbon atoms.
  • fatty alcohol component of the fatty alcohol ether sulfates the information on the fatty alcohol component of the end group-capped alkyl or alkenyl polyethylene glycol ethers correspondingly applies.
  • Sodium salts are particularly suitable as water-soluble salts.
  • Suitable alkylsulfosuccinates are sulfosuccinic acid semiesters of fatty alcohols having 8 to 22, preferably 12 to 18, carbon atoms. Such alkyl sulfosuccinates can be obtained, for example, by reacting corresponding fatty alcohols or fatty alcohol mixtures with maleic anhydride and subsequent addition of alkali metal sulfite or alkali metal bisulfite.
  • the fatty alcohol component of the sulfosuccinic acid semi-esters the information on the fatty alcohol component of the end group-capped alkyl or alkenyl polyethylene glycol ether defined in a) applies in turn.
  • the alkyl sulfosuccinates are preferably used as sodium and ammonium salts.
  • the alkylsulfosuccinamides considered as possible component b) correspond to the formula II, in which R is an alkyl or alkenyl radical having 8 to 22, preferably 12 to 18 carbon atoms, R 'is hydrogen or an alkyl radical with 1 to 3 carbon atoms and M is a hydrogen ion, an alkali metal cation, or an ammonium ion, preferably a sodium or ammonium ion.
  • the alkylsulfosuccinamides of the formula II are known substances which are obtained, for example, by reacting corresponding primary or secondary amines with maleic anhydride, followed by addition of alkali metal sulfite or alkali metal bisulfite.
  • Primary amines suitable for the preparation of the alkylsulfosuccinamides are, for example, n-octylamine, n-decylamine, n-dodecylamine, n-tetradecylamine, n-hexadecylamine, n-octadecylamine, n-eikosylamine, n-docosylamine, n-hexadecenylamine and n-octadecenylamine.
  • the amines mentioned can individually form the basis of the alkylsulfosuccinamides.
  • amine mixtures are used to prepare the alkylsulfosuccinamides, the alkyl radical of which derives from the fatty acid content of fats and oils of animal or vegetable origin.
  • such amine mixtures can be obtained from the fatty acids of native fats and oils obtained by fat cleavage via the associated nitriles by reduction with sodium and alcohols or by catalytic hydrogenation.
  • Particularly suitable secondary amines for the preparation of the alkylsulfosuccinamides of the formula II are the N-methyl and N-ethyl derivatives of the above-mentioned primary amines.
  • Alkyl sulfonates which are suitable for use as component b) correspond to the formula IV, R - SO3M IV in which R represents a straight-chain or branched alkyl radical, preferably 12 to 18 carbon atoms, and M represents an alkali metal cation or an ammonium ion, preferably a sodium ion.
  • the petroleum sulfonates suitable for use as component b) are obtained from lubricating oil fractions, usually by sulfonation with sulfur trioxide or oleum and subsequent neutralization with sodium hydroxide solution.
  • Compounds in which the hydrocarbon radicals predominantly have chain lengths in the range from 8 to 22 carbon atoms are particularly suitable here.
  • the acyl lactylates also considered as possible component b) correspond to the formula V, in which R is an aliphatic, cycloaliphatic or alicyclic radical having 7 to 23 carbon atoms and X is a salt-forming cation mean.
  • R is preferably an aliphatic, linear or branched hydrocarbon radical which can be saturated, mono- or polyunsaturated and optionally substituted by hydroxyl groups.
  • the alkyl phosphates and alkyl ether phosphates considered as possible component b) correspond to the formulas V and VI, and in which R represents an alkyl or alkenyl radical having 8 to 22 carbon atoms and M represents a hydrogen ion, an alkali metal cation or an ammonium ion, preferably a sodium or ammonium ion.
  • R represents an alkyl or alkenyl radical having 8 to 22 carbon atoms
  • M represents a hydrogen ion, an alkali metal cation or an ammonium ion, preferably a sodium or ammonium ion.
  • the indices m, n and o are zero in the case of alkyl phosphates, and in the case of alkyl ether phosphates they are integers from 2 to 15.
  • the compounds of the formulas V and VI are known substances which are obtained by customary methods of organic synthesis can be.
  • Suitable starting materials for the preparation of the alkyl phosphates are the straight-chain or branched alcohols having 8 to 22 carbon atoms described above in connection with the alkyl sulfates or sulfuric acid semiesters.
  • Alkyl phosphates in which the radical R has 10 to 16 carbon atoms are particularly preferred.
  • Addition products of 2 to 15 moles of ethylene oxide onto the abovementioned alcohols with 8 to 22 carbon atoms come into consideration as starting material for the production of the alkyl ether phosphates, which in turn can be obtained by known methods of organic synthesis.
  • the mono- and dialkyl phosphates defined above can each be used individually as component b) in the sense of the invention. However, preference is given to using mixtures of mono- and dialkylphosphates which are obtained in the industrial production of such compounds. The same applies analogously to the alkyl ether phosphates defined by the formulas V and VI.
  • the weight ratio of components a): b) is in the range from 1:20 to 3: 1, preferably in the range from 1:10 to 1: 1.
  • the surfactant mixture must be used in a certain minimum amount in order to achieve economically useful results in the flotation of non-sulfidic ores. However, a maximum amount of surfactant must also not be exceeded, since otherwise the foam formation becomes too strong and the selectivity towards the valuable minerals decreases.
  • the collector mixtures to be used according to the invention depend in each case on the type of ores to be floated and on their content of valuable minerals. As a result, the amounts required can vary within wide limits.
  • the collector mixtures according to the invention are used in amounts of 50 to 2000, preferably 100 to 1500 g per ton of raw ore.
  • the mixtures to be used according to the invention are used in the known flotation processes for non-sulfidic ores instead of known collectors. Accordingly, in addition to the collector mixtures described, the customary reagents such as foaming agents, regulators, activators, deactivators, etc. are also added to the aqueous slurries of the ground ores.
  • the flotation is carried out under the conditions of the methods of the prior art.
  • a preferred area of use for the collector mixtures to be used according to the invention is the processing of ores such as Scheelite, barite, apatite or iron ores.
  • the ore sample had the following grain size distribution: 28% ⁇ 25 ⁇ m 43% 25-100 ⁇ m 29% 100-200 ⁇ m
  • the collector mixture used contained the sodium salt of an N-C12 ⁇ 18 alkyl sulfosuccinamide as an anionic component.
  • a nonionic component a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 7 moles of ethylene oxide and a fatty alcohol mixture of chain length C12 to C18 was used.
  • the weight ratio of anionic component to nonionic component was 2: 1.
  • the flotation tests were carried out using a Humbold-Wedag laboratory flotation machine from KHD Industrieanlagen AG, Humbold-Wedag, Cologne (see Seifen-Fette-Wachsen 105 (1979), page 248) in a 1 l flotation cell.
  • Deionized water was used to make the slurry.
  • the cloud density was 400 g / l.
  • Water glass with a dosage of 2000 g / t was used as the pusher.
  • the conditioning time of the pusher was 10 min a stirring speed of 2000 rpm. It was floated at the pH value of approximately 9.5 resulting from the addition of water glass.
  • the type of collector dosage is shown in Table 1.
  • the conditioning time of the collector was 3 minutes.
  • Example 1 A flotation test according to Example 1 was carried out using only the alkylsulfosuccinamide from Example 1 as a collector. The data obtained are shown in Table 1.
  • Example 1 A flotation test was carried out according to Example 1 using a collector mixture of the alkylsulfosuccinamide mentioned in Example 1 and an adduct of 2 moles of ethylene oxide and 4 moles of propylene oxide with an alcohol mixture of chain length C12 / C18 in a weight ratio of 2: 1. The results of the flotation are shown in Table 1.
  • the combination of the anionic surfactant with an end-capped fatty alcohol polyethylene glycol ether according to Example 1 with a 40% reduced collector dosage can extremely increase the output of WO3, the selectivity also being more favorable.
  • the collector mixture according to the invention also has clear advantages in terms of selectivity and output.
  • the collector mixture used contained as an anionic component the alkylsulfosuccinamide from Example 1 and a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 5 moles of ethylene oxide with a fatty alcohol mixture of chain length C12 to C18 in a weight ratio of 2: 1.
  • the flotation experiments were carried out in a modified Hallimond tube (microflotation cell) according to B. Dobias, Colloid & Polymer Science, 259 (1981), pages 775 to 776 at room temperature. 2 g of ore were used for each test. Distilled water was used to prepare the slurry. The conditioning time was 15 minutes each. During the flotation, a flow of air was passed through the slurry at a flow rate of 4 ml / min. The flotation time was 2 min in all experiments.
  • the collector mixture used contained as the anionic component the alkylsulfosuccinamide from Example 1 and a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 10 moles of ethylene oxide with a fatty alcohol mixture of chain length C12 to C18 in a weight ratio of 2: 1.
  • the flotation was among those in the example 2 specified conditions carried out.
  • the collector mixture used contained as an anionic component the alkylsulfosuccinamide from Example 1 and an adduct of 2 moles of ethylene oxide and 4 moles of propylene oxide with a fatty alcohol mixture of chain length C12 to C18 in a weight ratio of 2: 1.
  • the flotation was carried out under the conditions given in Example 2.
  • the data from the flotation test can be found in Table 2.
  • the test results in Table 2 show that mixtures with fatty alcohol polyethylene glycol n-butyl ethers of different degrees of ethoxylation are superior to a corresponding collector mixture with a fatty alcohol alkoxylate as a nonionic component as a nonionic component with regard to the flotation result.
  • Grain size distribution of the flotation task ⁇ 25 ⁇ m 5.7% 25-100 ⁇ m 15.0% 100 - 500 ⁇ m 69.8% 500 - 1000 ⁇ m 8.7% > 1000 ⁇ m 0.8%
  • component a a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 7 moles of ethylene oxide with a fatty alcohol mixture of chain length C12 to C18 was chosen, a ratio from 65% of the Na / NH4 salt to 35% of the end-capped fatty alcohol polyethylene glycol butyl ether was present.
  • the flotation tests were carried out in a laboratory flotation cell (model D-1 from Denver Equipment with a capacity of 1 l) at room temperature. Tap water with a hardness of 16 ° dH was used to produce the slurry. The turbidity was 500 g / l, and the pH was adjusted to 9.5 with sodium hydroxide solution before the collector was added. After the pre-flotation (duration 6 min), the pre-concentrate was cleaned twice. Flotation was carried out at 1,200 rpm in all stages.
  • Example 4 The Na / NH4 salt of a monoalkyl sulfosuccinate described in Example 4 was used as the collector. The flotation was carried out under the conditions given in Example 4. The data can be found in Table 3.
  • the collector mixture used contained as an anionic component the Na / NH4 salt of a monoalkyl sulfosuccinate and an adduct of 2 moles of ethylene oxide and 4 moles of propylene oxide with a fatty alcohol mixture of chain length C12 to C18.
  • the collector mixture consisted of 65% of the anionic Surfactants and 35% of the fatty alcohol ethoxylate.
  • the flotation was carried out under the conditions given in Example 4. The flotation results are shown in Table 3.
  • the flotation task was a barite ore from France with a high proportion of sludge, with the following main components: 39% BaSO4 6.5% Fe2O3 41.8% SiO2
  • Grain size distribution of the flotation task ⁇ 25 ⁇ m 87.2% 25 - 40 ⁇ m 10.7% > 40 ⁇ m 2.1%
  • the sodium salt of a fatty alcohol ether sulfate based on an adduct of 3 moles of ethylene oxide and a saturated fatty alcohol of chain length C12 to C18 was used as the anionic component, and a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 7 moles of ethylene oxide with a fatty alcohol was used as the end-capped nonionic surfactant Chain length C12 to C18 in a weight ratio of 9: 1.
  • the experiments were again carried out in the Denver Model D-1 laboratory flotation cell.
  • the float was at a turbidity of 500 g / l in tap water at 16 ° dH and at one pH value of 9.5, which is set by the addition of water glass.
  • the water glass dosage was 3000 g / t.
  • the pre-concentrate was cleaned twice. Flotation was carried out at 1,200 rpm in all stages.
  • Example 5 The fatty alcohol ether sulfate from Example 5 was used as the collector.
  • the flotation was carried out under the conditions given in Example 5. The results of the flotation are shown in Table 4.
  • the collector used was a commercially available collector for barite flotation based on petroleum sulfonate.
  • the flotation was carried out under the conditions given in Example 5.
  • the data from the flotation test are shown in Table 4.
  • the collector combination according to Example 5 enables the collector dosage to be reduced by 20% - without loss of barite output.
  • a fluorite ore was used as the flotation task, which had the following composition with regard to the main components: CaF2 70% SiO2 12% CaCO3 10%.
  • the flotation task had the following grain size distribution: ⁇ 25 ⁇ m 45.2% 25-63 ⁇ m 29.9% 63-100 ⁇ m 25.0% > 100 ⁇ m 0.9%.
  • the collector mixture used according to the invention contained technical oleic acid as the anion-active component.
  • the weight ratio of anionic component to nonionic component was 7: 3.
  • the total dosage of the collector mixture was 300 g / t.
  • the flotation was carried out in a laboratory flotation machine from Denver Equipment (model D 1 with a 1 l cell).
  • the turbidity was 500 g / l for the pre-flotation and 300 g / l for the cleaning flotation.
  • Quebracho was used as the pusher, the total dosage being 1,500 g / t, which was added in equal parts (500 g / t each) in the 3 steps of the cleaning flotation.
  • the turbidity temperature was 30 ° C in all flotation stages.
  • the pH of the slurry ranged from 8 to 8.5.
  • the conditioning time for pushers and collectors was 5 minutes each.
  • the conditioning was carried out at a stirring speed of 1400 rpm.
  • the flotation was carried out at 1200 rpm.
  • the flotation time was 6 minutes.
  • Example 6 The technical oleic acid mentioned in Example 6 was used as a collector in a total dosage of 650 g / t.
  • the flotation was carried out under the conditions given in Example 6. The results of the flotation are shown in Table 5.
  • Table 5 Flotation of fluorite example Total dosage (g / t) CaF2 output (%) Concentrate content CaF2 (%)
  • a baryter ore was used as the flotation task, which had the following main components: Barite 65% Silicates 20% Iron oxides 10%.
  • the grain size distribution of the flotation task was 100% ⁇ 75 ⁇ m.
  • the collector mixture used for flotation according to the invention contained as an anionic component a sodium alkyl sulfate, the alkyl radical of which was derived from a fatty alcohol mixture consisting essentially of C16-C18 fatty alcohols.
  • the non-ionic Component consisted of a fatty alcohol polyethylene glycol n-butyl ether based on an adduct of 5 moles of ethylene oxide with a fatty alcohol mixture of chain length C12 to C18.
  • the weight ratio of anionic component to nonionic component was 6: 4.
  • the total dosage of the collector mixture was 350 g / t.
  • the flotation was carried out in a laboratory flotation machine from Denver Equipment (model D 1 with 1 l cells).
  • the cloud density was 500 g / l.
  • Water glass with a dosage of 1,000 g / t was used as the pusher.
  • the flotation was carried out at a pH of approx. 9, which resulted from the addition of water glass.
  • the flotation was carried out at room temperature with a pre-flotation stage and a post-cleaning stage, i.e. carried out in two stages.
  • the conditioning time for collectors and pushers was 5 minutes each.
  • the flotation time was 6 minutes. Conditioning and flotation were carried out at a stirring speed of 1200 rpm.
  • Example 7 The sodium alkyl sulfate described in Example 7 was used alone as a collector in a total dosage of 450 g / t.
  • the flotation of the barite ore was otherwise carried out as described in Example 7. The results of the flotation are shown in Table 6.
  • Table 6 Flotation of barite example Total dosage (g / t) BaSO4 output (%) Concentrate content BaSO4 (%) Example 7 350 98 91.6 Comparative Example 9 450 97 91.3
  • the flotation task consisted of an apatite ore, which had the following composition with regard to the main components: Magnetite 39% Apatite 18% Carbonates 11% Phlogopid 14% Olivine 9%.
  • the flotation task had the following grain size distribution: ⁇ 25 ⁇ m 18% 25-100 ⁇ m 34% 100-200 ⁇ m 43% 200 ⁇ m 5%.
  • the collector mixture according to the invention used contained an acyl lactylate based on technical oleic acid as the anion-active component.
  • the nonionic component consisted of an adduct of 5 moles of ethylene oxide with one mole of a fatty alcohol mixture of chain length C12 to C18.
  • the weight ratio of anionic component to nonionic component was 7: 3.
  • the total dosage of the collector mixture was 730 g / t.
  • the flotation was carried out in a laboratory flotation machine from Denver Equipment (model D 1 with a 1.2 l cell) at about 20 ° C. Hard water with 945 ppm Ca2+ and 1 700 ppm Mg2+ was used to produce the slurry. After the ore had been slurried in the flotation cell, the magnetite was removed with a hand magnet, washed and the wash water returned to the cell. The cloud density was 500 g / l. Water glass in an amount of 2,000 g / t was used as the pusher. The pH of the slurry was adjusted to 11. The flotation was carried out at a stirring speed of the mixing device of 1,500 rpm. The flotation time was 6 minutes. After the pre-flotation (rougher flotation), the pre-concentrate was cleaned twice.
  • Example 7 The acyl lactylate described in Example 8 was used alone and in a total dosage of 900 g / t as a collector. The flotation was carried out under the same conditions as in Example 8. The results of the flotation test are shown in Table 7. Table 7 Apatite flotation example Total dosage (g / t) P2O5 output (%) Concentrate content P2O5 (%) Example 8 730 80 22.3 Comparative Example 10 900 83 17.6

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EP87117456A 1986-12-04 1987-11-26 Tensidmischungen als Sammler für die Flotation nichtsulfidischer Erze Expired - Lifetime EP0270933B1 (de)

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DE19863641447 DE3641447A1 (de) 1986-12-04 1986-12-04 Tensidmischungen als sammler fuer die flotation nichtsulfidischer erze
DE3641447 1986-12-04

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EP0270933A2 EP0270933A2 (de) 1988-06-15
EP0270933A3 EP0270933A3 (en) 1989-10-25
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DE3745040C2 (de) * 1987-07-03 1998-06-18 Kempchen & Co Gmbh Ventilspindeldichtung an Ventilspindeln von Hochdruckdampfventilen
DE3818482A1 (de) * 1988-05-31 1989-12-07 Henkel Kgaa Tensidmischungen als sammler fuer die flotation nichtsulfidischer erze
US5122290A (en) * 1989-07-29 1992-06-16 Fospur Limited Froth flotation of calcium borate minerals
US5542545A (en) * 1994-04-12 1996-08-06 Ying Xue Yu Process for phosphate beneficiation
US6994786B2 (en) * 2004-06-07 2006-02-07 Arr-Maz Products, L.P. Phosphate beneficiation process using methyl or ethyl esters as float oils
ES2302453B1 (es) * 2006-11-29 2009-04-01 Kao Corporation, S.A. Colector para la flotacion de carbonatos.
CN102225371A (zh) * 2011-05-27 2011-10-26 北京矿冶研究总院 一种浮选白钨矿的方法
CN102716810B (zh) * 2012-06-21 2014-02-19 冯益生 一种浮选用起泡剂
CN103657859A (zh) * 2013-11-21 2014-03-26 成都兴能新材料有限公司 石英砂浮选除长石的方法
CA2959949C (en) * 2014-09-18 2023-02-14 Akzo Nobel Chemicals International B.V. Use of branched alcohols and alkoxylates thereof as secondary collectors
WO2017162563A2 (en) 2016-03-22 2017-09-28 Akzo Nobel Chemicals International B.V. Use of emulsifier in collector composition
CN105880031B (zh) * 2016-04-06 2018-08-07 武汉理工大学 一种亲水煤泥浮选的方法
CN106622676B (zh) * 2016-12-23 2018-11-30 中南大学 一种矿物浮选起泡剂及其制备方法和应用
WO2018197476A1 (en) 2017-04-25 2018-11-01 Basf Se Collectors for beneficiation of phosphate from phosphate containing ores
CN108927291B (zh) * 2017-05-24 2022-10-25 中蓝连海设计研究院有限公司 一种用于红柱石矿分选的组合捕收剂及制备方法与用途
CN108160334B (zh) * 2017-11-23 2020-10-09 北京有色金属研究总院 一种钨锡矿物捕收剂的制备方法
CA3108385A1 (en) 2018-08-30 2020-03-05 Basf Se Beneficiation of phosphate from phosphate containing ores
WO2020083793A1 (en) 2018-10-23 2020-04-30 Basf Se Collector composition and flotation process for beneficiation of phosphate
EP3917676A1 (en) * 2019-02-01 2021-12-08 Basf Se Mixture of fatty acids and alkylether phosphates as a collector for phosphate ore flotation
CN110721817B (zh) * 2019-11-29 2022-05-27 南华大学 一种浮选碳酸铀酰离子的捕收剂及其应用

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US3865718A (en) * 1972-12-07 1975-02-11 Dow Chemical Co Frothers for the flotation of sulfidic ores
US4138350A (en) * 1977-12-21 1979-02-06 American Cyanamid Company Collector combination for non-sulfide ores comprising a fatty acid and a sulfosuccinic acid monoester or salt thereof
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US4330398A (en) * 1979-10-12 1982-05-18 Westvaco Corporation Flotation of phosphate ores with anionic agents
US4309282A (en) * 1980-04-14 1982-01-05 American Cyanamid Company Process of phosphate ore beneficiation in the presence of residual organic polymeric flocculants
DE3018149A1 (de) * 1980-05-12 1981-11-19 Henkel KGaA, 4000 Düsseldorf Verwendung von alkylpolyglykolethermischformale zur schaumverhuetung
US4565647B1 (en) * 1982-04-26 1994-04-05 Procter & Gamble Foaming surfactant compositions
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FR2534492A1 (fr) * 1982-10-13 1984-04-20 Elf Aquitaine Perfectionnement a la flottation de minerais
DE3315951A1 (de) * 1983-05-02 1984-11-08 Henkel KGaA, 4000 Düsseldorf Verwendung von polyglykolethern als schaumdrueckende zusaetze in schaumarmen reinigungsmitteln
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DE3517154A1 (de) * 1985-05-11 1986-11-13 Henkel KGaA, 4000 Düsseldorf Verwendung von tensidgemischen als hilfsmittel fuer die flotation von nichtsulfidischen erzen

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DE3641447A1 (de) 1988-06-09
AU598069B2 (en) 1990-06-14
EP0270933A2 (de) 1988-06-15
AU8206687A (en) 1988-06-09
PT86256B (pt) 1990-11-07
DE3780587D1 (de) 1992-08-27
PT86256A (en) 1988-01-01
CN1012420B (zh) 1991-04-24
EP0270933A3 (en) 1989-10-25
CN87107281A (zh) 1988-06-15
TR24113A (tr) 1991-03-22
FI83044C (fi) 1991-05-27
ZA879095B (en) 1988-06-06
US4790931A (en) 1988-12-13
FI83044B (fi) 1991-02-15
BR8706550A (pt) 1988-07-12
FI875335A (fi) 1988-06-05
FI875335A0 (fi) 1987-12-03

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