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hydroxymates in mineral flotation

hydroxamate collectors for rare earth minerals flotation

development work to optimize a flotation flowsheet for rare earth element ree recovery is underway the original approach used alkyl phosphates and phosphoric acid ester as collectors to concentrate ree minerals to improve ree recovery hydroxamates as alternative collectors were investigated in this paper micro

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ree bearing mineral recovery a microflotation and surface

to improve ree recovery hydroxamates as alternative collectors for the thor lake ores were investigated literature regarding the use of hydroxamates on ree containing mineral phases is indeed limited with much of it published in chinese pradip and fuerstenau reporting on the flotation of bastnaesite from mountain

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the investigation of chrysocolla and malachite flotation - axis house

structure and the composition of the near surface layer the flotation response of a single mineral chrysocolla / quartz sand sample and mixed chrysocolla + malachite / quartz sand sample using n-octanohydroxamate collector have been investigated keywords alkyl hydroxamates mineral processing flotation collectors

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flotation of mixed copper oxide and sulphide minerals - axis house

copper oxide ores copper sulphide ores flotation collectors mineral processing alkyl hydroxamates a b s t r a c t sherwood copper's minto mine processes a high grade coppergold deposit in yukon canada the ore mined is from a primary copper sulphide deposit with separate additional deposits of copper oxides

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patent woa1 - hydroxamate composition and method

feb 13 hydroxamate composition and method for froth flotation the present invention relates to a hydroxamate composition and method of collection of minerals by froth flotation using hydroxamate background hydroxamic acids and their salts hereinafter referred to as hydroxamates are

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two new structures of hydroxamate collectors and their

collectors for oxidised base metal sulphides metal oxide minerals and precious metals this paper introduces two new structures of hydroxamate collectors cyclohexyl and 4-tert-butylbenzoyl hydroxamates and evaluates their characteristics relative to alkyl and benzoyl hydroxamates laboratory small-scale flotation tests

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design and development of novel flotation reagents for the

title design and development of novel flotation reagents for the beneficiation of mountain pass rare-earth ore language english authors fuerstenau d w 1 [email protected] edu source minerals amp metallurgical processing document type article keywords alkyl hydroxamates bastnaesite flotation flotation

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utilisation of hydroxamates in minerals froth flotation - sciencedirect

following a critical review of the utilisation of chelating reagents hydroxamates in minerals flotation results of a series of experiments performed in the presence of an experimental commercial hydroxamate as collector at bench scale with two different ores and in a microflotation cell with several combinations of minerals

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utilisation of hydroxamates in minerals froth flotation

following a critical review of the utilisation of chelating reagents hydroxamates in minerals flotation results of a series of experiments performed in the presence of an experimental commercial hydroxamate as collector at bench scale with two different ores and in a microflotation cell with several combinations of minerals

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effect of reagent type on the froth floatation of - metall mater eng

keywords sokoto phosphate rock beneficiation deposit metallurgical grade aero fatty acid flotation alkyl hydroxamates melamine introduction phosphate mineral is used as a main component in the manufacture of fertilizer that provides phosphorus nutrients required by plants phosphorus replenishment of

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flotation of mixed copper oxide and sulphide minerals - axis house

copper oxide ores copper sulphide ores flotation collectors mineral processing alkyl hydroxamates a b s t r a c t sherwood copper's minto mine processes a high grade coppergold deposit in yukon canada the ore mined is from a primary copper sulphide deposit with separate additional deposits of copper oxides

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molecular design of flotation collectors a recent progress - ncbi

may 10 the nature of froth flotation is to selectively hydrophobize valuable minerals by collector adsorption so that the hydrophobized mineral particles can attach azole-thiones guanidines acyl thioureas and thionocarbamates amide-hydroxamates and double minerophilic-group surfactants such as gemini

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behaviour of ilmenite as a gangue mineral in the benzohydroxamic

one challenge identified in the flotation of niobium bearing minerals with hydroxamates is the recovery of gangue minerals which can result in concentrate grade dilution micro-flotation of single and mixed minerals and bench scale flotation tests on a low-grade complex pyrochlore-bearing ore were conducted to assess the

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a tof-sims analysis of the effect of lead nitrate on rare earth flotation

oct 3 the investigation of hydroxamate flotation of ree minerals has not been limited to n-octanohydroxamate xu et al ren et al and cheng et al reported the use of naphthalenic hydroxamate collectors in rare earth flota- tion and now naphthalenic hydroxamates are the most commonly

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two new structures of hydroxamate collectors and their

collectors for oxidised base metal sulphides metal oxide minerals and precious metals this paper introduces two new structures of hydroxamate collectors cyclohexyl and 4-tert-butylbenzoyl hydroxamates and evaluates their characteristics relative to alkyl and benzoyl hydroxamates laboratory small-scale flotation tests

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hydroxamic acids as chelating mineral collectors - springer link

the use of alkyl and aryl hydroxamic acids in mineral processing is presented some basic information on mineral flotation chemistry is provided for the sake of common readers adsorption of hydroxamates on several minerals is compared because mostly the mineral flotation studies are preceded with adsorption studies

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rare earth element recovery by flotation with hydroxamates as

development work to optimize a flotation flowsheet for rare earth element ree recovery is underway the original approach used alkyl phosphates and phosphoric acid ester as collectors to concentrate ree minerals to improve ree recovery hydroxamates as alternative collectors were investigated in this paper

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flotation copper oxide - froth flotation sulphide oxide

oxide minerals floated were cuprite malachite and azurite am28 is a much safer reagent than mercaptaobenzothiazole as well and smells a whole lot better! cytec now solvay also make hydroxamates as does clariant i suggest that you engage a flotation reagent supplier to conduct screening tests on a sample of

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hydroxamate collectors for rare earth minerals flotation pdf

development work to optimize a flotation flowsheet for rare earth element ree recovery is underway the original approach used alkyl phosphates and phosphoric acid ester as collectors to concentrate ree minerals to improve ree recovery hydroxamates as alternative collectors were investigated in this paper

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the investigation of chrysocolla and malachite flotation - axis house

structure and the composition of the near surface layer the flotation response of a single mineral chrysocolla / quartz sand sample and mixed chrysocolla + malachite / quartz sand sample using n-octanohydroxamate collector have been investigated keywords alkyl hydroxamates mineral processing flotation collectors

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hydroxamic acids as chelating mineral collectors - springer link

the use of alkyl and aryl hydroxamic acids in mineral processing is presented some basic information on mineral flotation chemistry is provided for the sake of common readers adsorption of hydroxamates on several minerals is compared because mostly the mineral flotation studies are preceded with adsorption studies

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hydroxamate collectors for rare earth minerals flotation

development work to optimize a flotation flowsheet for rare earth element ree recovery is underway the original approach used alkyl phosphates and phosphoric acid ester as collectors to concentrate ree minerals to improve ree recovery hydroxamates as alternative collectors were investigated in this paper micro

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a multistage sulphidisation flotation procedure for a - citeseerx

keywords froth flotation sulphidisation copper oxide ore mineralogy recovery 'electrical double layer' at the mineral surface flotation depends directly on the nature and properties of mineral-water interface two factors are important 1 the interaction of b the use of alkyl hydroxamates / chelating reagents

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utilisation of hydroxamates in minerals froth flotation - sciencedirect

following a critical review of the utilisation of chelating reagents hydroxamates in minerals flotation results of a series of experiments performed in the presence of an experimental commercial hydroxamate as collector at bench scale with two different ores and in a microflotation cell with several combinations of minerals

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molecular modeling of alkyl hydroxamates as a highly selective

molecular modeling of alkyl hydroxamates as a highly selective flotation collectors for oxidized copper mineral abstract quantum chemical calculations have been employed to understand the nature of interaction between alkyl hydroxamates and oxidized copper ore the material studio 6 0 program accelrys usa has

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patent woa1 - hydroxamate composition and method

feb 13 hydroxamate composition and method for froth flotation the present invention relates to a hydroxamate composition and method of collection of minerals by froth flotation using hydroxamate background hydroxamic acids and their salts hereinafter referred to as hydroxamates are

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patent us - selective flotation of phosphate minerals with

jan 29 although hydroxamates have been used for more than twenty years as flotation collectors their use for phosphate flotation has been ignored since phosphate flotation involves the flotation of calcium phosphate minerals and hydroxamates are not expected to adsorb at calcium surface sites for this reason

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mining - industrial oleochemical products

our growing range of oleoflot products are the natural choice as reagents to aid in the separation of valuable minerals from gangue by froth flotation of ore slurries enhanced recovery and selectivity is experienced in the beneficiation of phosphate fluorspar and copper ores by judicious use of these products which are

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mineral flotation - international mining

nov 1 flotation has been at the heart of the mineral processing industry for over years addressing the 'sulphide' problem of the early s and in the axis developed technology of combining fatty acids hydroxamates and sulphidisation suites to effectively and economically float oxide minerals early on

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froth flotation of iron ores - scientific academic publishing

jan 2 in over half a century's practice in the iron ore industry froth flotation has been established as an efficient method to remove impurities from iron ore history of iron ore flotation started with direct flotation of iron oxides using anionic collectors such as petroleum sulphonate fatty acids and hydroxamates

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