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    Wyświetlanie 1-4 z 4
    Tytuł:
    The mechanism study on deep eutectic solvent for desilication of magnetite by reverse flotation
    Autorzy:
    He, Zhan
    Liu, Cai
    Mei, Guangjun
    Zhao, Yuanyuan
    Cheng, Qian
    Song, Xianwei
    Powiązania:
    https://bibliotekanauki.pl/articles/1845237.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    reverse flotation
    deep eutectic solvents collector
    desilication
    magnetie
    quartz
    Opis:
    Magnetite reverse flotation using a new deep eutectic solvent synthesized by lactic acid and CTAC as the collector has been investigated in this work. The flotation test results were compared with dodecylamine. The CTAC/lactic acid DES increased the grade of total iron to 66.69%, and the reduce quartz content to 6.67%, which were preferable to dodecylamine (the grade of Fe in the concentrate is 63.47%, and the grade of quartz in the concentrate is 9.13%). The depression performance and adsorption mechanism of CTAC/lactic acid DES on surface of magnetite and quartz are investigated by FT-IR, zeta potential and XPS. The results show that the adsorption of CTAC/lactic acid DES on quartz surface is more effective than that of magnetite. Therefore, deep eutectic solvent is an effective reagent for reverse flotation of magnetite as collector.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2021, 57, 6; 12-22
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The mechanism study on deep eutectic solvent for desilication of magnetite by reverse flotation
    Autorzy:
    He, Zhan
    Liu, Cai
    Mei, Guangjun
    Zhao, Yuanyuan
    Cheng, Qian
    Song, Xianwei
    Powiązania:
    https://bibliotekanauki.pl/articles/2146858.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    reverse flotation
    deep eutectic solvents collector
    desilication
    magnetie
    quarto
    Opis:
    Magnetite reverse flotation using a new deep eutectic solvent synthesized by lactic acid and CTAC as the collector has been investigated in this work. The flotation test results were compared with dodecylamine. The CTAC/lactic acid DES increased the grade of total iron to 66.69%, and the reduce quartz content to 6.67%, which were preferable to dodecylamine (the grade of Fe in the concentrate is 63.47%, and the grade of quartz in the concentrate is 9.13%). The depression performance and adsorption mechanism of CTAC/lactic acid DES on surface of magnetite and quartz are investigated by FT-IR, zeta potential and XPS. The results show that the adsorption of CTAC/lactic acid DES on quartz surface is more effective than that of magnetite. Therefore, deep eutectic solvent is an effective reagent for reverse flotation of magnetite as collector.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2021, 57, 6; 12--22
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flotation separation of quartz from phosphorite using an imidazole ionic liquid collector and its adsorption mechanism
    Autorzy:
    Zhao, Yuanyuan
    Xu, Wei
    Mei, Guangjun
    Yu, Mingming
    Yang, Siyuan
    He, Zhan
    Powiązania:
    https://bibliotekanauki.pl/articles/2146857.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    reverse flotation
    imidazole ionic liquid
    desilication
    phosphorite
    quartz
    Opis:
    In this study, an imidazole ionic liquid (dodecyl-tri-methylimidazolium chloride) was employed as a collector to separate quartz from phosphorite. The micro-flotation experiments of a single mineral found that it had selective collecting ability for quartz than phosphorite. Mixed mineral flotation experiments confirmed that efficient separation results could be obtained using the imidazole ionic liquid as the collector. A concentrate with a 31.44% grade of phosphorite could be obtained with a 0.285 kg/Mg collector dosage at neutral pH, which was much better than the traditional collector dodecylamine. The adsorption mechanism of the imidazole ionic liquid on the surface of phosphorite and quartz was investigated by contact angle and zeta potential measurements, Fourier transform infrared and X-ray photoelectron spectroscopy analyses. These results showed that the adsorption of imidazole ionic liquid at the quartz surface was stronger than that of phosphorite, and the collector adsorbability difference between quartz and phosphorite resulted in the efficient flotation separation. Consequently, the dodecyl-tri-methylimidazolium chloride salt is an effective collector for reverse flotation of quartz from phosphorite.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 1; 159--168
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculations of the Atomic Structure for Fe XVII Lines
    Autorzy:
    Zhou, Chao
    Cao, Jian-Jian
    Liang, Liang
    Yu, Geng-Hua
    Wang, Zhan-Min
    He, Hua-Yue
    Powiązania:
    https://bibliotekanauki.pl/articles/1398915.pdf
    Data publikacji:
    2016-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.30.Rj
    32.70.Cs
    34.80.Dp
    Opis:
    Energy levels, line strengths, oscillator strengths, radiative decay rates and fine structure collision strengths are presented for sixteen-times ionized iron (Fe XVII). The atomic data are calculated with the AUTOSTRUCTURE code, where relativistic corrections are introduced according to the Breit-Pauli distorted wave approach. The calculations of atomic data for 89 fine-structure levels generated from eleven configurations 2s²2p⁶, 2s²2p⁵ (3s, 3p, 3d), 2s²2p⁵ (4s, 4p, 4d, 4f) and 2s¹2p⁶ (3s, 3p, 3d) of the Ne-like Fe ion are presented. Fine structure collision strengths for transitions from the ground and the first four excited levels are presented at four electron energies: 75, 125, 175, and 250 Ry. These atomic structure data are compared with the available experimental and theoretical results.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 6; 1109-1117
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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