Mineralogical properties and fundamental mineral processing behaviour of the chromite contained in laterite leach residue

Shuji Owada, Taneomi Harada

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    In order to utilize chromite in the laterite residue discharged from the large-scale Ni-leaching plant in the Philippines, its state of distribution, mineralogical properties, grindability, floatability, and magnetism were investigated. Chromite particles are concentrated over a 37μm size range, and poor in liberation. There are three different groups of chromite (A, B, and C), categorized according to their polished section, chemical composition, lattice constant, and specific gravity. Some of these differences affect the mineral processing behavior to a considerable degree. The grindability of chromite in leach residue is relatively high compared with that of chromites from other regions. Flotation is controlled by interfacial electrical attraction when ionic collectors are used, and the flotation peak appears in the vicinity of the PZC when NaOl is used. The order of floatability among the three groups of chromite particles is A>B>C, which indicates that a difference in surface structure by group affects floatability. Chromite from leach residue reveals paramagnetism at room temperature. The higher the solid solubility of magnetic ions (Fe2+, Cr3+, and Fe3+), the greater the susceptibility is. In other words, the susceptibilities among the three groups are in the order of C>A>B.

    Original languageEnglish
    Pages (from-to)77-97
    Number of pages21
    JournalInternational Journal of Mineral Processing
    Volume19
    Issue number1-4
    DOIs
    Publication statusPublished - 1987

    Fingerprint

    Chromite
    Ore treatment
    laterite
    mineral processing
    chromite
    Flotation
    Paramagnetism
    Magnetism
    Surface structure
    Density (specific gravity)
    range size
    Leaching
    Lattice constants
    solubility
    Solubility
    chemical composition
    leaching
    Ions
    gravity
    ion

    ASJC Scopus subject areas

    • Earth and Planetary Sciences(all)
    • Geochemistry and Petrology
    • Geotechnical Engineering and Engineering Geology

    Cite this

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    title = "Mineralogical properties and fundamental mineral processing behaviour of the chromite contained in laterite leach residue",
    abstract = "In order to utilize chromite in the laterite residue discharged from the large-scale Ni-leaching plant in the Philippines, its state of distribution, mineralogical properties, grindability, floatability, and magnetism were investigated. Chromite particles are concentrated over a 37μm size range, and poor in liberation. There are three different groups of chromite (A, B, and C), categorized according to their polished section, chemical composition, lattice constant, and specific gravity. Some of these differences affect the mineral processing behavior to a considerable degree. The grindability of chromite in leach residue is relatively high compared with that of chromites from other regions. Flotation is controlled by interfacial electrical attraction when ionic collectors are used, and the flotation peak appears in the vicinity of the PZC when NaOl is used. The order of floatability among the three groups of chromite particles is A>B>C, which indicates that a difference in surface structure by group affects floatability. Chromite from leach residue reveals paramagnetism at room temperature. The higher the solid solubility of magnetic ions (Fe2+, Cr3+, and Fe3+), the greater the susceptibility is. In other words, the susceptibilities among the three groups are in the order of C>A>B.",
    author = "Shuji Owada and Taneomi Harada",
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    N2 - In order to utilize chromite in the laterite residue discharged from the large-scale Ni-leaching plant in the Philippines, its state of distribution, mineralogical properties, grindability, floatability, and magnetism were investigated. Chromite particles are concentrated over a 37μm size range, and poor in liberation. There are three different groups of chromite (A, B, and C), categorized according to their polished section, chemical composition, lattice constant, and specific gravity. Some of these differences affect the mineral processing behavior to a considerable degree. The grindability of chromite in leach residue is relatively high compared with that of chromites from other regions. Flotation is controlled by interfacial electrical attraction when ionic collectors are used, and the flotation peak appears in the vicinity of the PZC when NaOl is used. The order of floatability among the three groups of chromite particles is A>B>C, which indicates that a difference in surface structure by group affects floatability. Chromite from leach residue reveals paramagnetism at room temperature. The higher the solid solubility of magnetic ions (Fe2+, Cr3+, and Fe3+), the greater the susceptibility is. In other words, the susceptibilities among the three groups are in the order of C>A>B.

    AB - In order to utilize chromite in the laterite residue discharged from the large-scale Ni-leaching plant in the Philippines, its state of distribution, mineralogical properties, grindability, floatability, and magnetism were investigated. Chromite particles are concentrated over a 37μm size range, and poor in liberation. There are three different groups of chromite (A, B, and C), categorized according to their polished section, chemical composition, lattice constant, and specific gravity. Some of these differences affect the mineral processing behavior to a considerable degree. The grindability of chromite in leach residue is relatively high compared with that of chromites from other regions. Flotation is controlled by interfacial electrical attraction when ionic collectors are used, and the flotation peak appears in the vicinity of the PZC when NaOl is used. The order of floatability among the three groups of chromite particles is A>B>C, which indicates that a difference in surface structure by group affects floatability. Chromite from leach residue reveals paramagnetism at room temperature. The higher the solid solubility of magnetic ions (Fe2+, Cr3+, and Fe3+), the greater the susceptibility is. In other words, the susceptibilities among the three groups are in the order of C>A>B.

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