Investigation on the segregation roasting condition of manganese nodule

Akskadi Djohari, Shuji Owada, Taneomi Harada, Sakichi Goto

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    In order to find an economical system for recovering Cu, Ni, and Co from manganese nodules segregation, several conditions in calcination and segregation roasting were examined. Calcination is found necessary before segregation roasting because high water content of the nodule may cause the evolution of excess hydrogen which reduces metal oxides without passing through a series of segregation reactions. The best calcination temperature and time are 950°C and 30 min, respectively. Many factors affect the segregation results. Considering the reducibility and recovery of Ni, Cu, and Co, the following conditions would be suitable form of chloride: CaCl2·2H2O, CaCl2·2H2O addition: 26%, segregation roasting temperature: 900°C, segregation roasting time: 2 hr, coke addition: 14%, nodule size: 53-75μm, and coke size: 300-425μm. Under these conditions, 88%, 70%, and 56% recoveries of Cu, Ni, and Co were obtained.

    Original languageEnglish
    Pages (from-to)615-620
    Number of pages6
    JournalNihon Kogyokaishi
    Volume104
    Issue number1207
    Publication statusPublished - 1988 Sep

    Fingerprint

    Manganese nodules
    Calcination
    Coke
    Recovery
    Water content
    Hydrogen
    Temperature
    Oxides
    Metals

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Djohari, A., Owada, S., Harada, T., & Goto, S. (1988). Investigation on the segregation roasting condition of manganese nodule. Nihon Kogyokaishi, 104(1207), 615-620.

    Investigation on the segregation roasting condition of manganese nodule. / Djohari, Akskadi; Owada, Shuji; Harada, Taneomi; Goto, Sakichi.

    In: Nihon Kogyokaishi, Vol. 104, No. 1207, 09.1988, p. 615-620.

    Research output: Contribution to journalArticle

    Djohari, A, Owada, S, Harada, T & Goto, S 1988, 'Investigation on the segregation roasting condition of manganese nodule', Nihon Kogyokaishi, vol. 104, no. 1207, pp. 615-620.
    Djohari, Akskadi ; Owada, Shuji ; Harada, Taneomi ; Goto, Sakichi. / Investigation on the segregation roasting condition of manganese nodule. In: Nihon Kogyokaishi. 1988 ; Vol. 104, No. 1207. pp. 615-620.
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    abstract = "In order to find an economical system for recovering Cu, Ni, and Co from manganese nodules segregation, several conditions in calcination and segregation roasting were examined. Calcination is found necessary before segregation roasting because high water content of the nodule may cause the evolution of excess hydrogen which reduces metal oxides without passing through a series of segregation reactions. The best calcination temperature and time are 950°C and 30 min, respectively. Many factors affect the segregation results. Considering the reducibility and recovery of Ni, Cu, and Co, the following conditions would be suitable form of chloride: CaCl2·2H2O, CaCl2·2H2O addition: 26{\%}, segregation roasting temperature: 900°C, segregation roasting time: 2 hr, coke addition: 14{\%}, nodule size: 53-75μm, and coke size: 300-425μm. Under these conditions, 88{\%}, 70{\%}, and 56{\%} recoveries of Cu, Ni, and Co were obtained.",
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