Calculation of degree of mineral matter liberation in coal from sink-float separation data

T. Oki, H. Yotsumoto, Shuji Owada

    Research output: Contribution to journalArticle

    18 Citations (Scopus)

    Abstract

    A method for calculating the degree of mineral matter liberation by the sink-float separation data of coal was studied. The mineral composition was estimated by norm calculation using the results of elemental analyses of sink-float separated coals. The content of the inherent ash from the lowest density fraction and the minimum limit of the locked particle rate from the highest density fraction were also estimated, and the degree of the maximum mineral matter liberation (MLmax) was calculated from these results. The MLmax can be easily measured by carrying out sink-float separation at only two density points, and by measuring the weight, ash content, and ash element of these three density fractions. Because coal properties such as particle size and mineral composition are well reflected in the value, the MLmax is useful as a substitute index of the true degree of liberation.

    Original languageEnglish
    Pages (from-to)39-51
    Number of pages13
    JournalMinerals Engineering
    Volume17
    Issue number1
    DOIs
    Publication statusPublished - 2004 Jan

    Fingerprint

    Ashes
    Coal
    Minerals
    coal
    ash
    Coal ash
    mineral
    Chemical analysis
    Particle size
    particle size
    calculation
    mineral matter

    Keywords

    • Coal
    • Dense medium separation
    • Grinding
    • Liberation analysis

    ASJC Scopus subject areas

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

    Cite this

    Calculation of degree of mineral matter liberation in coal from sink-float separation data. / Oki, T.; Yotsumoto, H.; Owada, Shuji.

    In: Minerals Engineering, Vol. 17, No. 1, 01.2004, p. 39-51.

    Research output: Contribution to journalArticle

    @article{807a560305f84d23b617fc35c60ff1f7,
    title = "Calculation of degree of mineral matter liberation in coal from sink-float separation data",
    abstract = "A method for calculating the degree of mineral matter liberation by the sink-float separation data of coal was studied. The mineral composition was estimated by norm calculation using the results of elemental analyses of sink-float separated coals. The content of the inherent ash from the lowest density fraction and the minimum limit of the locked particle rate from the highest density fraction were also estimated, and the degree of the maximum mineral matter liberation (MLmax) was calculated from these results. The MLmax can be easily measured by carrying out sink-float separation at only two density points, and by measuring the weight, ash content, and ash element of these three density fractions. Because coal properties such as particle size and mineral composition are well reflected in the value, the MLmax is useful as a substitute index of the true degree of liberation.",
    keywords = "Coal, Dense medium separation, Grinding, Liberation analysis",
    author = "T. Oki and H. Yotsumoto and Shuji Owada",
    year = "2004",
    month = "1",
    doi = "10.1016/j.mineng.2003.09.009",
    language = "English",
    volume = "17",
    pages = "39--51",
    journal = "Minerals Engineering",
    issn = "0892-6875",
    publisher = "Elsevier Limited",
    number = "1",

    }

    TY - JOUR

    T1 - Calculation of degree of mineral matter liberation in coal from sink-float separation data

    AU - Oki, T.

    AU - Yotsumoto, H.

    AU - Owada, Shuji

    PY - 2004/1

    Y1 - 2004/1

    N2 - A method for calculating the degree of mineral matter liberation by the sink-float separation data of coal was studied. The mineral composition was estimated by norm calculation using the results of elemental analyses of sink-float separated coals. The content of the inherent ash from the lowest density fraction and the minimum limit of the locked particle rate from the highest density fraction were also estimated, and the degree of the maximum mineral matter liberation (MLmax) was calculated from these results. The MLmax can be easily measured by carrying out sink-float separation at only two density points, and by measuring the weight, ash content, and ash element of these three density fractions. Because coal properties such as particle size and mineral composition are well reflected in the value, the MLmax is useful as a substitute index of the true degree of liberation.

    AB - A method for calculating the degree of mineral matter liberation by the sink-float separation data of coal was studied. The mineral composition was estimated by norm calculation using the results of elemental analyses of sink-float separated coals. The content of the inherent ash from the lowest density fraction and the minimum limit of the locked particle rate from the highest density fraction were also estimated, and the degree of the maximum mineral matter liberation (MLmax) was calculated from these results. The MLmax can be easily measured by carrying out sink-float separation at only two density points, and by measuring the weight, ash content, and ash element of these three density fractions. Because coal properties such as particle size and mineral composition are well reflected in the value, the MLmax is useful as a substitute index of the true degree of liberation.

    KW - Coal

    KW - Dense medium separation

    KW - Grinding

    KW - Liberation analysis

    UR - http://www.scopus.com/inward/record.url?scp=0942278995&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0942278995&partnerID=8YFLogxK

    U2 - 10.1016/j.mineng.2003.09.009

    DO - 10.1016/j.mineng.2003.09.009

    M3 - Article

    AN - SCOPUS:0942278995

    VL - 17

    SP - 39

    EP - 51

    JO - Minerals Engineering

    JF - Minerals Engineering

    SN - 0892-6875

    IS - 1

    ER -