Mostrando 81 - 100 Resultados de 5,354 Para Buscar 'ilotas~', tiempo de consulta: 2.06s Limitar resultados
  1. 81
  2. 82
    por Kashi, Giti
    Publicado 2023
    “…Consequently, this applied-analytical study aimed to investigate copper removal from urban drinking water through batch reactor electrocoagulation/flotation (ECF) with aluminum electrodes. The copper removal efficiency was evaluated under various operating conditions of current density (0.8–2.4 mA/cm(2)), initial concentration (1–100 mg/L), pH (3.5–10.5), and time (10–30 min). …”
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  3. 83
    “…In froth flotation, depressants are employed to improve the flotation selectivity by modifying the wettability of the minerals and reducing their natural or induced floatability. …”
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  4. 84
    “…The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb(2+) ions and Alizarin yellow between aqueous and n-hexane interface at pH = 6. …”
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  5. 85
    “…The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb(2+) ions and Alizarin yellow between aqueous and n-hexane interface at pH = 6. …”
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  6. 86
  7. 87
  8. 88
  9. 89
    “…[Image: see text] The interaction or nonbonded energies of base organic ions and water molecules during the flotation process of minerals have important meanings for organizing hydrophobic and stable collectors. …”
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  10. 90
    “…Consistently, the froth flotation of scheelite still remains, in the twenty first century, a strong scientific, industrial, and technical challenge. …”
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  11. 91
    “…It was demonstrated that metallurgical responses (recovery, grade, selectivity, and kinetics) of NB flotation could improve compared to those of conventional tests. …”
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  12. 92
    “…Under the conditions of optimum grinding fineness, pH and collector dosage, a recovery of approximately 70% and a concentrate with a grade of over 47% were obtained by three stages of reverse flotation using sodium hexametaphosphate and water glass as regulators and Haicheng magnesite ore with an SiO(2) content of 2.38% and a CaO content of 0.75%. …”
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  13. 93
    por Zhang, Ming, Xu, Zeping, Wang, Lei
    Publicado 2021
    “…In this study, ultrasonic treatment was introduced to enhance the depressive performance of starch in the reverse flotation separation of fine hematite from quartz. …”
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  14. 94
  15. 95
    “…[Image: see text] Effective regulation reagents are essential in low-rank coal flotation for improving the floatability of ultrafine particles. …”
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  16. 96
    “…The microbubble generation device using air flotation effluent was used in the two air flotation treatments to enhance the device efficiency. …”
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  17. 97
    “…[Image: see text] The majority of reagents currently used in mineral flotation processes are fossil-based and potentially harmful to the environment. …”
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  18. 98
    “…In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main copper mineral in nature. …”
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  19. 99
    por Grajales Mendoza, Israel
    Publicado 1996
    Tesis Libro
  20. 100
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