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The Effect Of Grinding On Pyrophyllite Flotation

  • How Particle Size Affects Flotation

    There is a marked particle size effect on both R and K Table V gives an example of increasingly finer grinds in flotation with a different sulfide ore blend Within the times of grind indicated there is a tendency for both the over all R and K values to increase with finer grind

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  • A novel depressant for selective flotation separation of

    The flotation tests indicate that pyrophyllite is a naturally hydrophobic mineral Using glucan as a depressant can achieve flotation separation of pyrite from pyrophyllite at the natural pH of the pulp This is attributed to greater adsorption and stronger depression effect of glucan on pyrophyllite than that of pyrite.

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  • EFFECTS OF DRY GRINDING ON PYROPHYLLITE

    Hayashi et al 1962 studied the continued grinding of pyrophyllite and its effect on toxicity of the cell Juh/tsz 1977 suggested that destruction of this mineral during mechanochemical activation intensive dry grinding may be accelerated by cations and adsorbed water.

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  • PDF Effects of grinding on the preg robbing behaviour of

    Effects of grinding on the preg robbing behaviour of pyrophyllite Hydrometallurgy 2014 Sima Mohammadnejad

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  • PDF Effects of dry grinding on pyrophyllite

    The effects of grinding on structural alteration of pyrophyllite were followed by infrared spectroscopy field emission scanning microscopy and X ray diffraction.

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  • Effect of Grinding Media on Galena Flotation SpringerLink

    Grinding with steel media adversely affects the flotation response of galena Electrochemical measurements flotation tests and examinations were employed to identify interactions between galena and mild steel Iron oxide hydroxide or sulfate species that formed on the galena surface upon contact with mild steel decreased its floatability with the time of contact and aeration condition

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  • Characterization and removal of iron from pyrophyllite ore

    Iron as an impurity in pyrophyllite ore affects pottery ceramics and tile quality We carried out the characterization of a pyrophyllite ore sample using optical microscopy scanning electron microscopy X ray diffraction Fourier transform infrared spectroscopy FTIR thermogravimetric analysis TGA and wet chemical analysis The study revealed the presence of 2.15 iron oxide Fe2O3

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  • The Effect of Grinding on Pyrophyllite Flotation Request

    The effects of dry grinding on flotation recovery of pyrophyllite were investigated using an alcohol type frother Before and after dry grinding for several periods pyrophyllite was examined

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  • Effect of grinding media on the surface property and

    For the ball mill corundum balls with diameters of 21 16 and 12 mm were used as grinding media.For the rod mill corundum rods of 15 and 11 mm in diameter and 15 cm in length were used.Scheelite samples with a total mass of 200 g were fed into the mill and ground for 30 s each run to prevent over grinding.After a run the ground products were sieved by a standard screen with a pore

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  • The effect of grinding on pyrophyllite flotation

    The effects of dry grinding on flotation recovery of pyrophyllite were investigated using an alcohol type frother Before and after dry grinding for several periods pyrophyllite was examined using DTA TG XRD FTIR analyses and flotation tests.

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  • The effect of grinding on pyrophyllite flotation

    Grinding also produces a disruption of the 2 1 structure giving an exothermic effect at ∼1000 °C mainly due to mullite formation and decreases the intensity of the Si–O stretching vibrations Pyrophyllite flotation is affected by extensive grinding.

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  • Dry grinding effect on pyrophyllite–quartz natural mixture

    In addition the effect of different grinding intensity and the effect of the associated quartz on the mechanical amorphization of the pyrophyllite structure were investigated 2 Experimental2.1 Materials The pyrophyllite material analyzed in this study originated from Zhejiang province located in the south eastern region of China.

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  • A study on the effect of active pyrite on flotation of

    This study investigated the effect of the most important parameters such as grinding condition particle size and grinding time and chemical parameters pH type and concentration of collector frother concentration and depressant concentration on the chalcopyrite flotation in the presence of activated pyrite.

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  • Nano Structural Alteration of Pyrophyllite by Grinding

    The mechanical destruction of the pyrophyllite structure and final ground products upon grinding with a laboratory planetary ball mill were investigated using high resolution transmission electron microscope HRTEM coupled with selected area electron diffraction SAED field emission scanning electron microscope SEM and X ray diffraction XRD .

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  • Effect of different grinding media composition on the

    Request PDF Effect of different grinding media composition on the flotation of a PGM ore In the present study the effect of using different grinding media viz ceramic CE forged steel FS

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  • Characterization and removal of iron from pyrophyllite ore

    Iron as an impurity in pyrophyllite ore affects pottery ceramics and tile quality We carried out the characterization of a pyrophyllite ore sample using optical microscopy scanning electron microscopy X ray diffraction Fourier transform infrared spectroscopy FTIR thermogravimetric analysis TGA and wet chemical analysis The study revealed the presence of 2.15 iron oxide Fe2O3

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  • Effect of grinding on thermal reactivity of ceramic clay

    The effect of grinding on thermal behavior of pyrophyllite and talc as commonly used ceramic clay minerals was investigated by DTA TG emanation thermal analysis ETA B.E.T surface area s.a measurements X ray diffraction XRD and scanning electron microscopy SEM .A vibratory mill was used in this study grinding time was 5 min It was found that the grinding caused an increase in

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  • Frontiers Effect of Grinding Media on Grinding Flotation

    Grinding media have significant influence on the flotation of chalcopyrite and pyrite This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite This paper investigates the influence of steel ball and nano ceramic ball grinding on the floatability of chalcopyrite and pyrite Flotation results as well scanning electron microscopy SEM X ray

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  • Effect of grinding media on grinding flotation behavior of

    Grinding media have significant influence on the flotation of chalcopyrite and pyrite This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite This paper investigates the influence of steel ball and nano ceramic ball grinding on the floatability of chalcopyrite and pyrite Flotation results as well scanning electron microscopy SEM X ray

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  • Effect of grinding media on the surface property and

    For the ball mill corundum balls with diameters of 21 16 and 12 mm were used as grinding media.For the rod mill corundum rods of 15 and 11 mm in diameter and 15 cm in length were used.Scheelite samples with a total mass of 200 g were fed into the mill and ground for 30 s each run to prevent over grinding.After a run the ground products were sieved by a standard screen with a pore

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  • Effect of grinding and water vapour on the particle size

    The increase in specific surface of kaolinite K and pyrophyllite P induced by dry grinding in an oscillatory mill proceeded during storage in water vapour The average partic

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  • The flotation separation of pyrite from pyrophyllite using

    The effect of pH on the flotation recovery of pyrite and pyrophyllite using OGM/guar gum as depressant were studied by single mineral flotation tests and the results are shown in Fig 3.The result in Fig 3 shows that the flotation recovery of pyrite was very high > 88 in the pH range of 3–9 with increased in pH pyrite recovery decreased due to formation of iron oxy hydroxy species on

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  • PDF The effect of grinding on pyrophyllite flotation

    This exothermic effect SiO4 tetrahedron as well as formation of amorphous increases markedly with increasing grinding time silica from pyrophyllite by grinding suggesting that Fig 2 shows the results of flotation performed for the grinding initially produces a moderate structural alter reference and 30–120 min ground materials.

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  • Effect of Grinding Media on Flotation Chemistry

    The effect of a pyrite pyrrhotite mild steel contact under abrasion cannot be studied in the micro flotation test setup Accordingly batch flotation tests were performed on freshly ground artificial mixtures of quartzite with either 55 pyrite and/or 5 pyrrhotite in a Denver laboratory flotation cell.

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  • Effects of grinding on the preg robbing behaviour of

    The effect of dry grinding on the leaching behaviour of pyrophyllite has been studied by XRD FT IR thermal analysis and N2 adsorption techniques Pyrophyllite samples were ground for 3 6 12

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  • The Effect of Grinding Media and Environment on the

    1990 The Effect of Grinding Media and Environment on the Surface Properties and Flotation Behaviour of Sulfide Minerals Mineral Processing and Extractive Metallurgy Review Vol

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  • Analysis of the Effects of Grind Size on Production of

    copper oxide minerals However a number of flotation parameters have not been optimized to meet concentrate standards and grind size is one of the parameter The purpose of this research project was to analyze the effect of grind size on concentrate production at a mining company in Zambia.

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  • THE EFFECT OF GRINDING FINENESS ON THE RESULTS

    the grinding For each grinding experiment 820 g of sample was taken Grinding kinetics For testing the grinding kinetics the sample was ground with a solid content of 70 for a period of 3 5 7 and 9 minutes Grinding product is sieved on a series of sieves and the grain size analysis results are shown in Table 3.

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  • The effect of grinding media on the flotation of fine

    The pulp potential and flotation behaviour of fine chalcopyrite ground with different grinding media have been studied by experiments It s shown that there exist great differences in pulp potential oxidation species and flotation behaviour of chalcopyrite ground with ceramic or iron media Grinding with ceramic media gave much higher pulp potential

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  • Effect of Grinding Environment on Galena Flotation

    The effect of grinding media type after 60 min grinding on the flotation recovery of galena was investigated Table 1 shows the effect of grinding media type on galena recovery It can be seen that the galena wet ground with mild steel media has a lower galena recovery than galena wet ground with stainless steel media.

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  • Basic Principles Variables Affecting Froth Flotation

    The effect on principal flotation agent and fineness of grinding has already been discussed The relation between percentage of solids and quantity of minor flotation agent seems to point to the conclusion that it is the concentration of the aqueous solution of the minor agent rather than the quantitative relation between the minor agent and

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  • EFFECT OF GRINDING CHEMISTRY ON THE

    The effect of pulp chemistry on oxidised copper sulphide minerals and copper oxide minerals were first studied separately before examining a mixed system The work completed on the oxidised sulphide mineral revealed that grinding pulp chemistry affects the flotation performance of the ore for each oxidation degree tested For the

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  • ‪MUSA SARIKAYA‬‪Google Scholar‬

    The effect of grinding on pyrophyllite flotation M Erdemoǧlu M Sarıkaya Minerals engineering 15 10 2002 28 2002 The effect of an external magnetic field on cationic flotation of quartz from magnetite M Birinci JD Miller M Sarıkaya X Wang.

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  • Influence of Grinding in Pyrophyllite−Mullite Thermal

    The influence of grinding on the thermal transformation of pyrophyllite to mullite is analyzed by 27 Al and 29 Si MAS NMR spectroscopies using X ray powder diffraction and thermal analysis DTA TG as complementary techniques Mechanical treatments by dry grinding produce partial destruction of pyrophyllite and rearrangement of Al ions in tetra and pentahedral environments.

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  • PDF Effects of dry grinding on pyrophyllite

    The effects of grinding on structural alteration of pyrophyllite were followed by infrared spectroscopy field emission scanning microscopy and X ray diffraction.

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  • Basic Principles Variables Affecting Froth Flotation

    The effect on principal flotation agent and fineness of grinding has already been discussed The relation between percentage of solids and quantity of minor flotation agent seems to point to the conclusion that it is the concentration of the aqueous solution of the minor agent rather than the quantitative relation between the minor agent and

    Get Price
  • The influence of the dry grinding on the thermal behaviour

    The mechanical treatment by dry grinding of pyrophyllite produces a decrease in the particle size of the original material This strongly influences the thermal behaviour of weight losses on the TG curves decrease and the endothermic DTA effects shift to lower temperatures until the mechanochemical limit in particle size reduction is reached.

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  • Effects and Mechanism of Different Grinding Media on the

    The flotation behavior of beryl and spodumene typical silicate minerals was studied at wet grinding conditions with different grinding mediums with dodecylamine or sodium oleate as the collector The mechanism of potential influence of the grinding medium to the flotation behavior was investigated through measuring zeta potential of pure minerals micro scanning by X ray photoelectron

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  • PDF Effectof grinding on thermal reactivity of ceramic

    The effect of grinding on thermal behavior of pyrophyllite and talc as commonly used ceramic clay minerals was investigated by DTA TG emanation thermal analysis ETA B.E.T surface area s.a measurements X ray diffraction XRD and scanning

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  • An investigation into the effects of pulp chemistry under

    Dry grinding generally produces much faster pyrite flotation kinetics than wet grinding because of the generation of particles with high surface energy and that leads to highly activated particles It was therefore concluded that the grinding environment indeed has an effect on the flotation response of pyrite in the presence of gangue.

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  • Formation of Mullite from Pyrophyllite by Mechanical and

    When pyrophyllite is submitted to mechanical and thermal treatments significant changes take place according to XRD and DTA results With grinding the DTA endothermic peak is shifted to 540°C and becomes sharper and similar to kaolinite A sharp exothermic peak is also produced at 1000°C which is not present in the unground material.

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