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Magnetic separation of laterite

The process of one-step reduction roasting and magnetic separation was adopted to prepare ferro-nickel alloy from low-grade nickel laterite ore (w(Ni)=1.52%, w(Fe)=14.08%)

  • MAGNETIC SEPARATION OF CHROMIUM-CONTAINING
    MAGNETIC SEPARATION OF CHROMIUM-CONTAINING

    MAGNETIC SEPARATION OF CHROMIUM-CONTAINING LATERITES Konstantinos Hristos Gudulas Tecnological Education Institute Tei Kozani, Hellas ABSTRACT Investigations on the separation of ore, utilizing the difference in magnetic properties of the minerals were performed. The influence of the magnetic induction and the

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  • (PDF) MAGNETIC SEPARATION OF CHROMIUM
    (PDF) MAGNETIC SEPARATION OF CHROMIUM

    gudulas k. magnetic separation of chromium-containing laterites and iron rich quartz, were found in the magnetic material, which was separated at 0.20T induction

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  • (PDF) Calcination of low-grade laterite for concentration
    (PDF) Calcination of low-grade laterite for concentration

    Magnetic separation magnesium in laterite is higher than 15% (Lee et al., 2005). In addition, leaching processes sometime cause environmental and Magnetic separation utilizes the force of a magnetic field to pro- health concerns that should be addressed, raising the cost of duce differential movements of mineral particles through a mag

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  • Recovery of Magnetite from Leached Laterite-residue by
    Recovery of Magnetite from Leached Laterite-residue by

    2.2. Magnetic Separation Magnetic separation is carried out using Davis Tube Tester (DTT) as a magnetic separator under various para-meters such as water flow rate, magnetic induction and sample rate. The sample is poured into the water-filled glass tube (2.5cm diameter), set between two magnetic poles at 45degree of the tube angle. Magnetic

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  • (PDF) MAGNETIC SEPARATION OF CHROMIUM-CONTAINING LATERITES
    (PDF) MAGNETIC SEPARATION OF CHROMIUM-CONTAINING LATERITES

    gudulas k. magnetic separation of chromium-containing laterites and iron rich quartz, were found in the magnetic material, which was separated at 0.20T induction

    Get Price
  • (PDF) Recovery of Magnetite from Leached Laterite-residue
    (PDF) Recovery of Magnetite from Leached Laterite-residue

    This values seem to be similar with the magnetic susceptibility of chromites given by Owada11) and the data obtained by Rao for the magnetic susceptibility of Indian chromites.9) Thus, to recover the iron from laterite ore by magnetic separator should consider the magnetic properties both of

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  • Utilization of limonitic nickel laterite to produce
    Utilization of limonitic nickel laterite to produce

    Feb 01, 2019 The laterite briquettes were reduced for various durations to determine the effect of reduction duration on magnetic separation and the results were shown in Fig. 8. By increasing the reduction duration from 20 min to 60 min, the nickel grade and recovery were improved from 4.1% to 5.0% and 78.7% to 95.6%, respectively

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  • Calcination of low-grade laterite for concentration of Ni
    Calcination of low-grade laterite for concentration of Ni

    Mar 01, 2010 The main finding of this work was that magnetic separation is effective in recovering 48% of nickel from laterite, increasing the Ni grade in the recovered product from 1.5% to 2.9%, when prior to the separation the ore was calcinated at 500 C

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  • A discussion of magnetic separation techniques for
    A discussion of magnetic separation techniques for

    magnetic separation. Case studies Several case studies are presented that describe the testing and flowsheet development work that enabled proper magnetic separation technology selection and flowsheet configuration. Case Study 1: Dry magnetic separation of ilmenite before electrostatic separation The deposit for Case Study 1 was a typical aeolian

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  • Beneficiation of Low-Grade Laterite Nickel by Calcination
    Beneficiation of Low-Grade Laterite Nickel by Calcination

    of calcination were done. Wet magnetic separation tests with two methods of calcination-magnetic separation and only magnetic separation were done on the sample and the results in grade and recovery of nickel concentrate were compared. According to results, nickel content in the sample was0.94%. Main minerals of laterite sample were Hematite

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  • Reduction roasting-magnetic separation mechanisms of
    Reduction roasting-magnetic separation mechanisms of

    摘要: The sodium salts are able to enhance the reduction roasting-magnetic separation of the laterite ores significantly and improve the content and recovery of nickel and iron of magnetic product.The reduced behaviors of saprolitic laterite in the presence of sodium sulfate or sodium carbonate were investigated by using thermodynamical calculation,X-ray diffractometry,optical microscopy

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  • Extraction of Nickel from Garnierite Laterite Ore Using
    Extraction of Nickel from Garnierite Laterite Ore Using

    In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and

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  • Experimental Study on Reduction-Magnetic Separation
    Experimental Study on Reduction-Magnetic Separation

    The reduction and magnetic separation of low-grade nickel laterite was studied at varing temperatures between 1325–1400 C and a weak magnetic field of 100 mT in order to acquire high grade concentrations. The influence of reduction temperature, percentage of CaO, and atomic ratio of C/O (carbon/oxygen) were investigated

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  • Upgrade of nickel and iron from low-grade nickel laterite
    Upgrade of nickel and iron from low-grade nickel laterite

    Aug 23, 2021 Aug 23, 2021 Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the mechanisms on the enhanced growth of the

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