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Method of flotation extraction of platinum group metals from ores or cakes of pyrrotine leaching with application of flotation reagents-collectors. Mixes of organic compounds are used as flotation reagents wit definite experimental computer parameters: dipole-dipole interaction should -2.7717 to 0.4956, ј Van der Waals interaction from 2.2390 to 8.8701, not ј Van der Waals interaction from -0.3746 to 1.7483, flexure of valence angles from 2.4600 to 3.1866, stretching of valence bonds from 0.2580 to 0.7430 and steric energy from 6.1198 to 8.6639 ccal/mol. |
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Pneumatic flotation machine and method of flotation Set of inventions relates to flotation performed using the air driven flotation machines and can be used for dressing of minerals with low or average content of valuable component. Proposed machine for flotation of particles from suspension to obtain foam product comprises housing with flotation chamber, at least one system of nozzles to feed gas and suspension in flotation chamber and at least one gassing system to feed extra gas to flotation chamber. Said gassing system is arranged inside flotation chamber and under said system of nozzles. At least one trammel of gassing system inside flotation system. Besides, it incorporates at least one measuring device to analyse formed foam product and/or suspension and at least one computer connected with said measuring device. At least one computer is configured to calculate and output adjustment variable in response to data from measuring device to vary the position of said gassing system by at least one said trammel. |
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Hydropneumatic aerator with flat-jet aerating plume Invention relates to biological purification of effluents and can be used for aeration in aeration tanks and in flotation cleaning, dressing of minerals, particularly, in pulp aeration devices. Aerator comprises housing, inner web, nozzle to be fitted in said web and provided with aligned spaced apart rectangular cross-section channels to feed fluid and to discharge gas-fluid plume, air feed pipe and fluid discharge pipe. Nozzle inlet channel height-to-width, a:d, varies from 1.5:12 to 6:12. It features similar magnitude of outlet channel height-to-width ratio, b:d. Inlet channel length-to-height, L:h, ratio varies from 22:1.5 to 22:6, similarly, varies the L:b ratio. Air gap length-to-channel total length ratio, l:H, makes 16:60. |
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Fatty acid byproducts and methods of their application Claimed group of inventions relates to enrichment technologies. In particular, claimed invention relates to compositions for enrichment and methods of their application. Method of separating first material from second material includes mixing first material with second material in suspension with composition for enrichment, where composition for enrichment includes, at least, one fatty acid byproduct of the process of Diesel biofuel production or re-etherification reactions, and fatty acid byproduct includes monoglycerides or diglycerides, from more than 55 wt % to approximately 60 wt % of methyl esters of fatty acids, from approximately 0.01 wt % to approximately 1 wt % of methanol and from approximately 0.01 wt % to approximately 1 wt % of glycerol, providing air bubbles in suspension to form aggregates of bubbles with particles of first material and ensuring separation of aggregates of bubbles with particles from second material. |
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Method for integrated treatment of tailings of floatation beneficiation of molybdenum-tungsten ore Method for integrated treatment of tailings of floatation beneficiation of molybdenum-tungsten ore involves preliminary separation of a mineral fraction with relatively high average content of molybdenum and tungsten according to physical properties. That fraction is subjected to thermal or thermochemical treatment, which provides thermal dissociation and sublimation of said metals in form of volatile compounds - oxides, e.g., tungsten and molybdenum trioxides, followed by deposition at different temperature in an oxidative, neutral or reducing atmosphere, which enable to separate molybdenum and tungsten on a reaction substrate, e.g., on calcite, to form artificial calcium tungstate or molybdate, respectively. |
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Invention relates to use of compositions of alkylammonium salts and amino alkoxylate esters when purifying silicate-containing minerals and ore by floatation. The composition consists of at least one quaternary ammonium compound which contains at least one organic radical with 1-36 carbon atoms, which is bound to the ammonium nitrogen atom and optionally contains heteroatoms, and at least one amino alkoxylate ester of formula (1) or salt thereof, where A, B independently denote C2-C5 alkylene, R1 is C8-C24 alkyl or alkenyl, R2, R3, R4 independently denote H or C8-C24 acyl, under the condition that at least one of the radicals R2, R3 or R4 is C8-C24 acyl, and x, y, z independently denote integers from 0 to 50, under the condition that the sum x+y+z is equal to an integer from 1 to 100, in amounts of 10 to 5000 g per ton of ore as a collector during floatation of silicates. |
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Invention relates to concentration of minerals by flotation, particularly, for extraction of sliming mineral polymetallic ore pulps, for example, for extraction of valuable metals from slimes and can be used for concentration of fine and superfine ingrained polymetallic ores. Method of extraction of selected minerals from ore pulps by pressure flotation comprises processing of the pulp by flotation reagents for hydrophobisation of mineral particle surface and water saturation with air under pressure. Prepared conditioned pulp is thoroughly mixed with air-saturated water at barometric pressure while produced mix is processed by stream of air bubbles of flotation sizes generated nearby flotation chamber bottom. |
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Composition of oxidised and maleated derivatives Invention relates to compositions for application as floatation collector for ore purification, additive to concrete, as emulsifier or corrosion inhibitor, which contains compound of oxidised and maleated fatty acid or resin acid, where composition contains fatty acid compounds, resin acid compounds or mixture of such compounds, which have crosslinks between hydrocarbon chains in form of ether bond and have one or several fragments of derivatives of carboxylic acids. |
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Method of flotation separation of black jack and copper mineral from iron sulphide Invention relates to flotation extraction of sulphide minerals from concentrates and can be used in flotation concentration of sulphide copper-zinc pyrite- and pyrrotine-bearing polymetallic ores. Proposed method comprises conditioning of mineral suspension in the presence of complexing collector and complexing regulator, adding foaming agent and extraction of said sulphide minerals into foam product of flotation. Complexing zinc- and copper-selecting agent represents 1-phenyl-2,3-dimethyl 4-dimethylaminopyrazolone-5 that can form sold bond with said metals. Complexing regular represents ammonium thiocyanate or its mix with acetic acid, or copper sulphide. Complexing collector-to-complexing regulator ratio makes 1:0.25-1:3. |
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Device, flotation machine equipped therewith and method of its operation Invention relates to dispersion of suspensions. Device for dispersion of suspension (2) by at least one gas (7, 7a, 7b), particularly for flotation machine (100) comprises dispersing nozzle (10, 10'). The latter comprises the following components arranged one after another along suspension flow: suspension nozzle (3', 3", 3'") converging along the flow, mixing chamber (4) including said nozzle (3', 3", 3'"), mixing tube (5, 5') adjoining said mixing chamber (4) and converging along the flow, and at least one gas feed line (6, 6a, 6b) to feed at least one gas (7, 7a, 7b) into mixing chamber (4). Suspension nozzle (3", 3"') has at least N gas channels (31), larger than 3, connected with said gas feed line (6, 6a, 6b) to terminate at end side(3a", 3a'") of suspension nozzle (3", 3"') facing said mixing chamber (4). Device comprises A gas valves (V). Note here that N=A and everyone of N gas channels incorporates one gas control valve (V) to metre out gas (7a) fed to suspension (2) via appropriate gas channel (31). |
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Invention relates to dressing of minerals and can be used for concentration of sulphide tails. Flotation centrifuge consists of cylindrical mixing housing, pulp tangential feed pipe, air feed pipe and products discharge pipes. Mixing housing consists of two sections. One of the latter is composed of vortex chamber with guide vanes connected with separation cone. Concentrate discharge pipe is connected tangentially thereto. Said separation cone is furnished with light fraction foam discharge pipe arranged at top section of inner chamber. Inner cone of phase separation is arranged along the separation sector to displace there along. |
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Method for extraction of nano-sized particles from man-made wastes by flotation Invention can be used for extraction of silicon dioxide and carbon nano-sized particles from thermoelectric production gas cleaning sludge by flotation. Proposed method comprises thermal treatment of said wastes at 400-600°C. Obtained material is ground to particle size not over 10-6 m and repulped. Obtained suspension is aerated under conditions that allow formation of air bubbles with size equal to floatable particles. Note here that, in aeration, initial air bubbles in size not over 50·10-6 m are fed. Separation of foam product containing carbon nanoparticles and those of chamber product with silicon dioxide particles is performed in laminar mode of foam product efflux at outlet, foam layer height making at least 30·10-3 m. |
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Flotation of sulfur pyrrhotite-pyrite ores of ferrous and nonferrous metals Invention relates to flotation of sulfur pyrrhotite-pyrite ores containing valuable components: copper, zinc and noble metals. Method of flotation of copper-zinc-pyrrhotite-pyrite ore comprises crushing in subcalcareous medium, conditioning by collectors and foam makers, copper flotation with production of "copper head", collective copper-zinc flotation with production of collective concentrate containing copper minerals and natural activated black jack, tails of collective copper-zinc flotation are conditioned by copper sulfate. Black jack is activated by lime and collector to perform selective flotation to extract black jack to zinc concentrate to produce pyrrhotite-pyrite-bearings final tailings. Composition "М-ТФ" composed of the mix of isobutyl dithiophosphate and thionourethane is used as collectors at the following molar ratio of components: isobutyl dithioohosphate:thionourethane of 20:40 to 60:80%, fed in combination with butyl xanthate as follows, in flotation cycles: copper cycle - "М-ТФ" composition is used, collective cycle - 3-4 wt % of "М-ТФ" and 0:1 wt % of butyl xanthate are used, zinc cycle - combination of 0:1 wt % of "М-ТФ" and 3-4 wt % of butyl xanthate. |
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Method of dressing man-made mineral stock of nonferrous metals Invention relates to concentration of pyrite gold-bearing copper, copper-zinc, lead-zinc and other man-made products of nonferrous and noble metals. Method of flotation of sulphide man-made products of nonferrous metals comprises conditioning of ground mix by sulfhydric collectors in alkaline calcareous medium. Xanthate solution in amount of 10% (mole fraction) and carboxymethylcellulose in amount of up to 20 % (mole fraction) ate added as modifiers to solution of dithiophosphate. Pulp is first conditioned with modified dithiophosphate at pH above 8-9 for up to 10 min and, then, with xanthate to float nonferrous metal sulphides and mineral forms of noble metals at relationship between flow rates of modified dithiophosphate and xanthate of 1:2 to 2:1. |
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Method of disthene ore flotation Invention relates to flotation of minerals using water recycling and can be used in flotation of disthene and other sulphide-free ores. Proposed method comprises main and check flotation, cleaner flotation of foam product and extra flotation of middlings and anionic collector. Flotation is conducted in alkaline medium at pH 7.0-8.0 by fatty-axis collector fed together with high-molecular alkyl benzene sulfonate or polyalkyl benzene sulfonate with 1:0.75-1:2 ratio. In flotation, water pretreated by aluminium sulphate is recycled. |
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Modified reagent for flotation of nonferrous metal zinc-bearing ores Invention relates to concentration of minerals, particularly to flotation of nonferrous metal zinc-bearings ores. Polymethylene napththalensulfonate is used as a modifying reagent for flotation of zinc-bearing ores of nonferrous metals. Said modifying reagent has common formula . |
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Invention can be used in oil production and processing, petrochemical, food and light industries, ferrous and nonferrous metallurgy and machine building. Flotation aerator comprises housing baffle 10 with central bore to divide its inner chamber in top and bottom zones 2, 3; water inlet arranged at bottom zone lower area, air duct 7; water-air mix outlet; motor 1 with impellers 5, 6 fitted on shaft 4 arranged in housing different zones. Said baffle 10 represents a diaphragm. Air duct 7 is connected with top zone 2. Water-air mix outlet is composed of perforation in housing bottom zone sidewalls. Impeller 6 arranged at bottom zone 3 is composed of rotor with vertical replaceable vanes. Said vanes feature perforated and/or toothed edges. Water discharge into bottom zone is effected via detachable control diaphragm 12 with central bore and nozzle 22. |
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Method of flotation of hematite-bearing iron ores and products Invention relates to concentration of minerals and can be used for flotation separation of iron oxides (hematite, martite, magnetite) from finely disseminated iron ore. Proposed method comprises fine desludging of ore and flotation of minerals using organophosphorous compounds of the below general formula as collector: [RO(C2H4O)m]2P(O)OM, where R is alkyl C4-20, alkyl (C8.10)phenyl; M-H, K, HN(CH2CH2OH)3; m=4-12 with pre-flotation of impurities. Separation of fine slurries (grain size of 0.020 mm and finer) is carried out in long-cone hydraulic cyclones. Flotation of admixtures of carbonate, phosphate and iron-bearing silicates is executed at pH 8-9 created by liquid glass while that of aforesaid metal oxides is performed at pH 5-6 created by sulfuric acid. |
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Method of slurry coal and coal concentration Invention relates to concentration of minerals and can be used for concentration of coal, slurry coal, industrial carbon, etc. Proposed method comprises oil sintering of coal particles at mixing of suspension by rotary mixer for 2-3 min. Intensive mixing of slurry coal or coal and water is carried out at 1000-1500 rpm of mixer.Then, oil reagent-collector is added in amount of 8-10 wt % of coal to mix the obtained mix at 1000-1500 rpm for 5-8 min with gradual increase of mixer rpm to 4000 with at interval of 1-2 min. |
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Invention relates to concentration of minerals and may be used for processing mineral bearing ferrous, nonferrous, rare and noble metals and for cleaning effluents of solids and oil products. Pneumatic flotation machine comprises central pipe, aerator, T-joints, reactor, separation chamber, bells, foam settler, foam flute and tails discharge device. Flotation machine is equipped with flow distributor for demixing of aerated pulp in two flows containing, preferably, mineralized bubbles and pulp. This flow distributor is shaped to ring composed of a straight truncated cone. Bells are arranged tangentially at identical or different height in symmetry about vertical axis. Flow distributor bottom edge is connected with separator chamber top edge while top edge of said bells are connected with appropriate bottom edges of reactor pipes which increases flotation rate and reduces loss of mineralised bubbles with tail (chamber) product. |
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Method of foam-flotation adjustment Invention relates to adjustment of one or more chamber of foam-flotation for separation of substances. Proposed method comprises feeding the mix into chamber which includes both target substance and useless substance. Note here that the chamber is serviceable for, at least, partial separation of the mix. It comprises also feeing the gas in chamber fluid to produce foam and monitoring foam overflow to monitor degree of gas extraction in chamber operation. Note here that gas flow rate adjustment in said chamber is performed solely for maximum gas extraction for said chamber. |
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Method of flotation of sulphide ores containing bearing metals Invention relates to dressing of minerals, particularly, to flotation separation of noble metals and may be used for flotation dressing of gold-bearing sulphide ores and dressing products bearing noble metals. Proposed method comprises conditioning of crushed pulp in the presence of the main collector and complexing agent selective with respect to noble metals, introducing foaming agent and releasing noble metals into flotation product foam. Said complexing agent selective with respect to noble metals represents perhydro-1,3,5-dithiazanine-5-il-methane that can form sound bond with noble metals. Relationship between complexing agent selective with respect to noble metals and sulfhydric collector varies from 2:0.5 to 0.5:1.5. |
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Invention relates to concentration of minerals and may be used for processing mineral bearing ferrous, nonferrous, rare and noble metals and for cleaning effluents of solids and oil products. Proposed machine comprises aerator, tee, reactors, separation chamber, diffuser, foam settler, skimming regulator and tails discharge device. Machine is equipped with appliance for dividing homogeneous pulp flow into two jets containing, primarily, mineralised bubbles and pulp. It is composed of tube bent in circle with its top edge communicated with reactor and bottom edge connected with flat diffuser. Opposite edge of diffuser is secured at separation chamber to reduce loss of mineralised bubbles with tail (chamber) product. |
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Invention relates to concentration of minerals and may be used using in selective flotation. Proposed method comprises sulphide flotation with medium collector, foamer and regulator to produce concentrate and tailings and further metallurgical processing. Before sulphide flotation, first selective flotation is carried out using complete water rotation from final tailings and finished concentrate in the presence of kerosene, butyl alcohol and foamer to obtain tailings and carbon-sulphide concentrate to be subjected to second selective flotation in strong-alkaline medium to obtain carbon product and first sulphide concentrate. Firs selective flotation wastes are directed to flotation to get second sulphide concentrate and tailings. |
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Method of processing refractory gold-bearing pyrrotine-arsenopyrite ore Proposed method comprises selective flotation, gold extraction from flotation wastes, biological oxidation of concentrate, neutralisation and gold extraction. Note here that selective oxidation is carried out with isolation of arsenopyrite and pyrrotine concentrates and tailings. Gold is extracted from tailings by gravity. Biological oxidation is performed in two steps. At first step arsenopyrite concentrate is fed while, at second step, pyrrotine concentrate is fed. Sulphides and elemental sulfur are extracted from biological oxidation pulp to be divided into solid and liquid phases for solid phase to be neutralised. Now, gold is extracted separately from said solid and liquid phases. |
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Method for europium (iii) from salt solutions Invention relates to hydrometallurgy, in particular, to the method for extraction of europium (III) from salt solutions by floating extraction. In process of floating extraction of europium (III) cations the organic phase is represented by isooctyl alcohol, and the collector of surfactants of anion type is sodium sodium dodecyl sulfate in the concentration corresponding reaction stoichiometry: Eu+3+3NaDS=Eu(DS)3+Na+, where Eu+3 - cation of europium (III), DS- - dodecyl sulfate-ion. At the same time the floating extraction is carried out at pH=7.5-8.5, and at the ratio of organic and water phases 1/20-1/40. |
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Method for enrichment of solutions with low gold content Invention relates to hydrometallurgy of noble metals. The method for enrichment of solutions with low gold content includes development of an organic catching film on the surface of a solution in floatation chambers and passage of air bubbles for sublate floatation. At the same time extractants used for gold extraction are added preliminarily to a substance of the organic catching film, being a matrix for processes of gold ions and molecules catching and retaining. The solution with low gold content is filtered, acidified to pH of 1.5-2.0, and a collector is added to it, then the floatation chamber is filled to the half with the specified solution, and with the organic matrix with extractants, the volume of which does not exceed 0.5% of the volume of the entire solution, and intensive mixing is started. After mixing the floatation chamber of the operating machine is filled with the solution to the full, additional floatation is carried out for complete collection of the matrix into a single drop, and then it is separated from the solution. |
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Method of copper-molybdenum ores separation Proposed method comprises ore pretreatment, bulk flotation in alkaline medium at pH 11-12 to obtain copper-molybdenum concentrate. Bulk copper-molybdenum concentrate is subjected to treatment by bacteria Pseudomonas Japonica with titre of 6·107 kl/ml for 2-5 min. Then, selective flotation is performed to separate molybdenum and copper into foam product and flotation tail, respectively. |
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Method of dressing man-made mineral stock of nonferrous metals Invention relates to flotation of man-made stock. Method of flotation of sulfide ores of nonferrous and noble metals comprises conditioning crushed ore with dithiophosphate solution or other sulfhydric collectors in lime medium and flotation. Note here that for reduction in floatability of pyrite and increase in extraction of metal up to 10 wt % of thiourea ((NH2)2CO) or its derivatives are preliminary introduced in the solution of dithiophosphate as a modifying agent. Then, pulp from ore is conditioned, first, with modified dithiophosphate at pH 8.5-9.0 for 3-5 minutes and, then, with, xanthate at pH over 9.0 for 1.0 minute. Then flotation of sulphides of nonferrous metals and mineral forms of noble metals at input of modified of dithiophosphate and xanthate varying from 1:3 to 3:1, respectively. |
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Method of extracting yttrium (iii) from salt solutions Method of extracting yttrium (III) from salt solutions involves floatation extraction using an organic phase and a collector. The organic phase used is isooctyl alcohol. The collector used is an anionic surfactant - sodiium dodecyl suphate in a concentration which corresponds to the stoichiometry: Y+3+SDS-=Y[DS]3, where Y+3 is a yttrium cation, DS- is a dodecyl sulphate ion. Floatation extraction is carried out at pH=7.0-7.8 and ratio of the organic phase to the aqueous phase of 1/20-1/40. |
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Plant and method for water cleaning by flotation Invention may be used in chemical industry. Proposed plant comprises, at least, one water intake zone 31, zone 32 of water mixing at pressure and water mixing at vacuum, flotation zone 35 separated from mixing zone 32 by wall, and cleaned water draw-off zone 36 at the bottom of said flotation zone 35. Mixing zone 32 comprises, at least, one water injection nozzle 40, 91, 92 arranged nearby panel 33. At least, one part of the latter has holes 331 to separate intake zone 31 and mixing zone 32. |
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Method of pyrrhotite-bearing ores flotation Invention relates to dressing of minerals and may be used for increasing dressing efficiency. Proposed method comprises grinding initial material, conditioning it with oxygen-bearing gas to extract foamed product from pulp. Said conditioning is performed in ejector of column flotator. Note here that gas flow rate is defined by the following expression: Vgas =k·Qore ·βpyrrhotite/100, where: Vair is optimum gas flow feed to column flotator ejector, m3/h; k is empirically determined coefficient for determination of said coefficient varying from 4.0 to 7.0; Qore is amount of incoming ore, t/h; βpyrrhotite is content of pyrrhotite in ore, %. |
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Method of producing composite bactericidal preparation Invention relates to techniques of producing composite bactericidal preparations, having bactericidal and fungicidal activity. The method involves preparation of a dispersion of substrate particles, solutions of salts of bactericidal metals from a group comprising silver and zinc, mixing the dispersion and the solutions, treating the mixture with a reagent from a group comprising a soluble phosphate to form particles of low-solubility metal compounds and precipitation thereof on the substrate particles to form a composite preparation, removal thereof and washing. The group of metals additionally includes copper and nickel. The group of reagents additionally includes sodium hydroxide, chloride and carbonate. The substrate used is particles of fibrillated cellulose fibres and the composite preparation is removed by pressure flotation. The fibrillated cellulose fibres contain, in terms of mass, at least 94% fibres with length of not more than 1.23 mm and at least 54% fibres with length of not more than 0.63 mm, with water retention of not more than 4 ml/g fibre. The mixture is treated in two or more steps. The solution of salts of bactericidal metals used is industrial effluent containing said salts. |
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Reverse flotation of iron ore by collectors in water nanoemulsion Invention relates to method of concentrating silicate-containing minerals and ores by means of foam flotation, in particular, to method of reverse flotation in presence of finely dispersed collector agent. Nanoemulsion contains, at least, one collector for flotation of silicate minerals, at least, one emulsifier and water. Average size of collector particles constitutes from 1 nm to 6 nm, and collector represents compound, containing, at least, one nitrogen atom and, at least, one hydrocarbon group, which has from 6 to 30 carbon atoms. Nanoemulsion is obtained by passing collector, emulsifier and water mixture through high pressure homogeniser at pressure from 100 to 1500 bar. |
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Collector for flotation of loamy minerals from potassium ores Invention relates to removal of loamy slimes from potassium ores by flotation. Proposed method comprises the use of collector selected from the group of ethoxylated fat amines of formula where R1 and R2 are independent hydrocarbon groups with 1-22 carbon atoms, n is the number exceeding on the average 15, preferably 20, and smaller than 100, preferably 80, more preferably 60, all the more preferably 50, furthermore preferably 40, and more preferably 35, and of formula where R3 is hydrocarbon group with 8-22 carbon atoms, preferably 12-22, and more preferably 16-22, z is the number 1-3, preferably 1-2, and more preferably 1; X, Y and Y' are independent alkyl group with 1-4 carbon atoms, preferably methyl or group -(EO)sH wherein EO is ethylene oxide group, s is the number, on the average, 5-50, preferably 7-50, mote preferably 9-45, all the more preferably 9-40, and furthermore preferably 11-35, while sum of all s makes, on the average, 15 or more, preferably 20 or more, and smaller than 100, preferably 80, more preferably 60, all the more preferably 50, furthermore preferably 40, and furthermore preferably 35 provided the, at least one of X, Y and Y' is the group -(EO)sH. |
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Method of flotation adsorption of superdispersed particles from gold-bearing stock Invention relates to mineral dressing and may be used in processing hard-dressing slime gold-bearing ores and placers. Proposed method comprises preparation of material, additional of sorbent and hydrophobisation in flotation. Pulp preparation is effected by sizing the material to under 0.005 mm with water addition at pulp-to-water ratio of 1:5. Note here that flotation processing is performed with adding minced sorbent being mixed at the following ratio of components: butadiene rubber - 20-60, carbon - 80-40. Note also that butyl potassium xanthate and foaming agent T-80 are added after addition of minced sorbent. |
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Method to extract holmium (iii) cations from nitrate solutions Method to extract holmium (III) cations from nitrate solutions includes ion floatation using an anion-type surfactant as a collector. Besides, the collector is dodecyl sodium sulfate in a concentration corresponding to stoichiometry of the following reaction: Ho+3+3C12H25OSO3Na=Ho[C12H25OSO3]3+3Na+, where Ho+3 - holmium cation, C12H25OSO3Na - sodium dodecyl sulfate. Moreover, ion floatation is carried out at pH=6.6-7.4, which makes it possible to achieve 90% extraction of holmium from aqueous solutions of its salts. |
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Method to extract lanthanum la+3 cations from aqueous solutions Invention relates to the method for production of pure lanthanum or its oxides from lean or industrial raw materials by method of ion floatation. The method to extract lanthanum La+3 cations from aqueous solutions of salts includes ion floatation using an anion-type surfactant as a collector. Besides, the collector is dodecyl sodium sulfate in a concentration corresponding to the stoichiometric reaction: La+3+3NaDS=La[DS]3+3Na+, where La+3 - lanthanum cation, NaDS - dodecyl sodium sulfate. Moreover, ion floatation is carried out at pH=7.8-8.1, which makes it possible to achieve 98% extraction of lanthanum from aqueous solutions of its salts. |
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Method to extract copper and molybdenum from sulfide copper-molybdenum ores Method includes main floatation with several rewashes by sulphydric and apolar collectors to produce a collective crude copper-molybdenum concentrate. Then its treatment with a reagent is carried out, such as sodium sulphide, and selective floatation to produce a foamed molybdenum-containing product and a chamber copper-containing concentrate. When processing a crude copper-molybdenum concentrate, a combination of sodium sulfide and sodium thioantimonate at the ratio of 4:1÷1:1. |
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Present invention relates to a floatation agent containing a collector composition of hydrocarbons for foam floatation of ore minerals. The floatation agent contains a collector composition of hydrocarbons contains more than 80 wt % isomeric and normal paraffins, less than 1 wt % aromatic compounds, less than 5 ppm sulphur and less than 1 ppm nitrogen, and has density between 0.65 and 0.8 g/cm3 at 15°C, and at least one foaming agent. The invention discloses use of the floatation agent, wherein the amount of the paraffin hydrocarbon composition ranges from 50 to 250 g/t. The invention also discloses use of gas oil or kerosene containing said paraffin hydrocarbon composition. The method for foam floatation involves floatation of ore or mud using an effective amount of said collector composition of hydrocarbons. |
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Invention relates to dressing of minerals, particularly, to processing by flotation. Proposed machine comprises housing including top cylindrical part accommodating concentric tubular aerators, air feed branch pipe, tangential feed branch pipe and that of conical bottom section, and concentrate discharge branch pipe. Besides, is incorporates special annular dampers made up of plates and arranged aligned with housing and projected relative to housing taper bottom inner surface, over housing height. |
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Electric flotator with device for conversion of fluid turbulent flow into laminar flow Invention relates to flotation and may be used for cleaning of fluids. Electric flotator consists of case with web to make two chambers, two sets of electrodes, power supply, scraper tool, and fluid feed pump. Second chamber houses set of tubes secured in lines over entire area thereof and arranged vertically to break turbulent flow into minor turbulent flows to comply with the number of shaped tubes of said set. Pressure in all said flows transforms minor flows into laminar flows of higher power to pass through second set of tubes. |
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Flotation of titanium-bearing ores and water-bearing ores for extraction of minerals Invention relates to concentration of minerals by flotation and may be used in extraction of titanium dioxide, silicon dioxide and vanadium dioxide fron titanium-bearing and water-bearing ores. Proposed method comprises producing flotation concentrate using flotation reagent and extracting mineral therefrom. Liquid or dry alkaline metal lignosulphonate is used as flotation reagent to be added to concentrate in amount of 0.05-1.7 kg per ton of ore crushed to, at least, 0.2 mm. Prior to flotation, mix is stirred for, at least, 5 minutes while obtained flotation concentrate is analysed for availability and content of minerals by relationship: where M1 is mineral weight in comparison solution, mg; Mt is weight of test portion, mg; V is total volume of analysed solution, Val - volume of aliquote, cm3; F is graduation factor. |
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Invention relates to ore dressing and may be used in coal flotation. Proposed method comprises conditioning the pulp with collector and foaming agent and extracting coal bulk into concentrate. Collector reagent represents γ-hexylthiopropyl phenol ester of general formula: . |
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Invention relates to flotation and may be used for separation of three-phase pulp in metallurgy and chemical industry, as well as treatment of effluents. Proposed machine comprises, at least, one flotation chamber defined by bottom, lengthwise walls and partitions with pulp overflow openings and furnished with pump aeration assembly, frost concentrate collection and discharge assembly arranged at flotation chamber top, as well as initial pulp feed assembly and flotation tailing discharge assembly arranged at flotation machine outlet end. Lengthwise walls are bent in, at least, one point. Note here that distance from machine lengthwise axis to band point exceeds 1/2 of flotation chamber depth. Note also that inclination of lengthwise walls to bottom varies from 5° to 45°; while flotation chamber has mouth arranged at its top in symmetry about machine lengthwise axis. Note also that mouth base width does not exceed flotation chamber depth while its height does not exceed 1/2 of chamber depth. |
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Method of producing high-purity sphen and aegirine concentrates Invention may be used in dressing of minerals and chemical technology for production of sphen and aegirine concentrates of stable quality irrespective of ore composition. Proposed method comprises acid cleaning of mineral impurities, and magnetic separation on low- and high-intensity fields. Prior to acid cleaning, froth product of reverse nepheline flotation is subjected to cleaning using nontoxic depressor, for example, liquid glass or sodium fluorosilicate and acid cleaning in 15% sulfuric acid on mixing for 2-3 h at t=40-50°C. Then, after washing, it is dried and subjected to magnetic separation in high-intensity fields for production of target concentrates. |
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Method of extracting cerium from salt solutions Method of extracting cerium cations from aqueous solutions of its salts involves use of a sodium dodecyl sulphate surfactant collector with concentration corresponding to the reaction stoichiometry: Ce+3+3DS-=Ce[DS-]3, where Ce+3 is a cerium cation, DS- is a dodecyl sulphate ion. Cerium cations are extracted via flotoextraction in an organic phase at pH=7.6-8.3. The organic phase used is isooctyl alcohol. |
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Procedure for combined processing of rebellious lead-zinc ores First, the ore is supplied to a cycle of the main lead-zinc flotation accompanied by foam-producing agent supply, a sulphydric collector and zinc minerals depressing agent that does not contain cyanide. The resulting crude lead-zinc concentrate is subjected to cleaning lead-zinc flotation, a lead-zinc concentrate and lead-zinc middlings are obtained, processed in a cycle of lead-zinc flotation of middlings. Final tailings are obtained that contain pyrite and lead-zinc concentrate. In the second yield of the cycle of the main lead-zinc flotation the product is obtained which is then subjected to further flotation in the cycle of primary zinc flotation that yields rough zinc concentrate and final tailings. The rough zinc concentrate is processed during cleaning zinc flotation that yields commercial zinc concentrate and zinc middlings. The zinc middlings from the cleaning zinc flotation cycle is supplied to the cycle of zinc flotation of middlings that yields final tailings and zinc concentrate. The lead-zinc concentrate of the cleaning lead-zinc flotation cycle and concentrates from the cycles of lead-zinc and zinc middlings flotation are combined and sent to hydrometallurgical processing. |
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Method to process gold-bearing material to recover gold Raw feedstock is ground, and pulp is prepared from it. Pulp is processed with introduction of reagents, a collector and a carrier while mixing, and the produced gold-bearing agglomerate is separated. Reagents added are soda and blue vitriol at the ratio of 1:1. Collectors used are butyl xanthate and thioacylanilide at the ratio of 1:3. The carrier used is polyurethane foam pretreated with transformer oil 1900-2100 g/t. Pulp treatment is carried out in process of mixing with a speed of around 1300 rpm for 80-100 minutes with the content of solid substance equal to 48-52%. Agglomerate is separated by screening and wringing. The gold-bearing concentrate is produced, as well as a cleaned carrier, which is returned for pulp treatment. |
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Invention relates to separation of inhomogeneous fluids by centrifugal forces, particularly, to flotation hydrocyclones to be used in chemical, petroleum and other industries. Proposed hydrocyclone comprises cylindrical tank with cover and porous permeable sidewall, annular collector to feed gas into said tank, branch pipes to feed suspension in said tank, those to discharge foam and feed gas into collector, and unloading device. Micro pores of said sidewall represent horizontal cylindrical through channels with radial direction at tank top and tangential direction at tank bottom. Direction of micro pores from radial to tangential varies as distance from tank cover increases while direction of tangential pores complies with suspension feed direction. Gas feed branch pipe is arranged tangentially at collector bottom and its direction is aligned with that of micro pores at tank bottom. |
Another patent 2528525.