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The interaction of OM with sulphide minerals and its effects on their flotation are little understood Although chalcopyrite recovery and grade are generally high in the flotation of most copper and molybdenum ores this is not the case for molybdenite whose flotation is much lower and sensitive to changes in hydrodynamic and pulp conditions in the flotation cell 9101112
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copper sulfide minerals and the selective flotation of molybdenite from coppermolybdenum concentrates The results of this research program were quite successful and the University of Utah is now seeking patent protection for this flotation technology Miller Ye and Jang 1990
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copper and reject iron to establish a base test to compare other reagent schemes with This work included flotation reagents such as dithiophosphate thiocarbamate and AERO 3302 promoter as chalcopyrite collectors fuel oil as molybdenite collector and sodium sulfite inc sulfate calcium hydroxide and potassium dichromate as pyrite depressants
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Investigations have been conducted to characterize the surface chemical and flotation properties of molybdenite in aqueous environments typical of those that exist in the copper circuits of plants which process porphyry copper ores These investigations have revealed that molybdenite and quartz particles are negatively charged at the pH
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Nov 01 2020 · 1 Introduction Molybdenite the principal mineral containing molybdenum is closely associated with copper sulfides Hirajima et al 2014The recovery of molybdenite from copper ores is usually achieved by bulk flotation to obtain a coppermolybdenum concentrate followed by molybdenite flotation against copper sulfides in the presence of NaHS or Na 2 S Ansari and
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Separation of copper flotation concentrates into density fractions by Sep 16 2016 A novel approach for flotation recovery of copper and molybdenite from a copper arsenic ore Flotation of Silicates Gangue from hematite containing products Separation of copper flotation concentrates into density fractions by means of
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Optimization of flotation parameters for beneficiation of a molybdenum ore 525 found in lowgrade ores and associated with copper sulfides In order to produce molybdenite concentration firstly a bulk coppermolybdenum concentrate is obtained by floating CuMo together Secondly molybdenite is enriched selectively by
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③Molybdenum flotation and selection of impurities When copper minerals are effectively suppressed a certain amount of nonpolar oil is added to the molybdenum floatation process to achieve the purpose of enhancing the flotation efficiency of molybdenite
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The Flotation Process Until quite recently copper ore had to be handpicked if the extraction of the metal was to be economical In fact in the last century ores of 4 percent grade were regarded as almost valueless Today such ores which would be regarded as relatively rich in copper are scarce the great majority of mines contain the
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copper sulfide minerals and the selective flotation of molybdenite from coppermolybdenum concentrates The results of this research program were quite successful and the University of Utah is now seeking patent protection for this flotation technology Miller Ye and Jang 1990
read more
A process for separating molybdenite from copper concentrates containing copper and iron sulfides gangue materials and an organic collector comprising 1 conditioning the concentrate in aqueous suspension at a pH below about 7 with a soluble metal salt 2 contacting the so treated concentrate with hydrogen peroxide at pH of about 4 to about 8 3 subjecting the concentrate from 2 to a
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The interaction of OM with sulphide minerals and its effects on their flotation are little understood Although chalcopyrite recovery and grade are generally high in the flotation of most copper and molybdenum ores this is not the case for molybdenite whose flotation is much lower and sensitive to changes in hydrodynamic and pulp conditions in the flotation cell 9101112
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③Molybdenum flotation and selection of impurities When copper minerals are effectively suppressed a certain amount of nonpolar oil is added to the molybdenum floatation process to achieve the purpose of enhancing the flotation efficiency of molybdenite
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The embodiments of this invention in which an exclusive property or privilege is claimed are defined as follows 1 In the recovery process of molybdenite from associated copper values froth flotation where the copper values are depressed the step of adding to the launderer stage of the molybdenum recovery cycle an antifoam consisting of about 160 ppm per ton of ore of a polyoxyethylene
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In the flotation of copper sulfide ores xanthates are usually added for collecting copper minerals Molybdenite being naturally hydrophobic is easily floated with the copper minerals and must then be separated from them In a large number of laboratory experiments and in
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Typically rougher molybdenite flotation and recovery from bulk coppermolybdenum concentrates involves the use of alkalisulfides Nokes reagents cyanides oxidants andor thermal treatment to depress copper sulfide minerals The bulk coppermolybdenum feed generally varies from 02 Mo to 10 Mo and with traditional reagents the singlestage rougher flotation recovery of molybdenite
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A process for separating molybdenite from copper concentrates containing copper and iron sulfides gangue materials and an organic collector comprising 1 conditioning the concentrate in aqueous suspension at a pH below about 7 with a soluble metal salt 2 contacting the so treated concentrate with hydrogen peroxide at pH of about 4 to about 8 3 subjecting the concentrate from 2 to a
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Apr 28 2020 · Introduction Molybdenite MoS 2 is the primary source of molybdenum Mo and approximately half of the Mo production is obtained from copper Cu–Mo sulfides mainly porphyry Cu deposits Ansari and Pawlik 2007 Song et al 2012 Hirajima et al 2014At present the flotation separation of Cu minerals and Mo minerals in this type of ore is normally achieved by selectively
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Nov 04 1980 · Froth flotation is conventionally used for initial molybdenite separation from primary copper sulfide flotation concentrates Conventional processes are however generally complicated expensive and variable because of undesirable factors such as oxide coatings on the molybdenite surfaces natural floatability of a portion of the copper mineral surfaces and residual collector
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molybdenum ore flotation process machine in haiti but flotation priority process is the most use in molybdenum ore with copper the valuable minerals in the molybdenum ore with gold are molybdenite pyrite is a high technological enterprise that integrated research manufacture sales and service The company has multiple subsidiaries such as
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Investigations were conducted to characterize the surface chemical and flotation properties of molybdenite in aqueous environments typical of those that exist in the copper circuits of plants that process prophyry copper ores The investigations showed that molybdenite and quartz particles are negatively charged at the ph commonly used for bulk
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Copper and molybdenum minerals are frequently found together in ore bodies and are customarily removed from these ore bodies and separated from each other by differential froth flotation The molybdenite concentrates so obtained contain copper iron and lead impurities which must be removed if the molybdenite is to meet market standards for
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Molybdenite is one of the most flotable minerals but its flotation mechanism has only recently been understood An exhaustive analysis of flotation properties and optimum conditions for maximum recovery is presented This is in association with the flotation properties of copper ores from which it is often recovered as a byproduct
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