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050396B.CHM  + Source:  ONR Asia +
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Contributory Categories: ENG,ENV,GEO

Country: Japan 

From:  Proceedings of the First (1995) ISOPE
       Ocean Mining Symposium
       Tsukuba, Japan
       21-22 November 1996
       ISBN: 1-880653-21-4
       233 pp. 

KEYWORDS: Japan; Ocean Mining, ferro-managanese nodules,
polymetallic sulfides. ***ADDITIONAL KEYWORDS WITH EACH

Item 5

N. Rokukawa
National Institute for Resources and Environiment

     National Institute for Resources and Environment (NIRE) has
developed a hydrometallurgical process for recovery of Co, Ni,
and Cu from cobalt rich crusts.  NIRE process are the use of a
mixture of aqueous ammonium carbonate and ammonium sulfite
solution as leaching reagents, extraction of Ni and Cu in the
pregnant liquor with LIX84 as organic solvent, and alcohol
deposition of Co in the residue liquor.  The flowsheet for
recovery of Co. Ni, and Cu from cobalt rich crusts are presented.

KEY WORDS: Cobalt rich crusts, hydrometallurgy, solvent
extraction, cobalt, nickel, copper

     Han. K.N.. Hoover. H., and Fuerstenau, D.W (1974). 
"Ammonia-Ammonium Leaching of Deep-Sea Manganese Nodules," Inst. 
J. Mineral Proces, Vol 1. pp 215-230
     Ossero-Asare, K (1981a).  "Application of activity-activity
diagrams to ammonia hydrmetallurgy: 3-Mn-NH3-H20, Mn-NH3-H20 -CO3
and Mn-NH3-H20-SO4 systems at 25 C, Trans. Inst. Min Metall..
Sect C, Vol 90. pp 152-158
     Ossero-Asare, K (1981b).  "Application of activity-activity
diagrams to ammonia hydrmetallurgy:  4-Fe-NH3-H20, Fe-NH3-H20 -
CO3 and Fe-NH3-H20-SO4 systems at 25C, 'Trans. Inst. Min.
Metall., Sect C, Vol 90, pp 159-163
     Rokukawa, N (1990).  "Extraction of Nickel, Cobalt and
Copper from Ocean Manganese Nodules with Mixed Solution of
Ammonium Carbonate and Ammonium Sulfite," Shigen-to-Sozai, Vol
106, No 4. pp 205-209.
     Rokukawa, N (1992).  "Extraction of Nickel, Cobalt and
Copper from Ocean Cobalt Crusts with Ammonium Alkaline Solution.'
Shigen-to-Sozai, Vol 108, No 3, pp 187-191.
     Rokukawa, N (1993).  "Separation of Cobalt, Nickel and
Copper from Ammoniacal Alkaline Leach Liquor of Cobalt Crusts by
solvent Extraction," Shigen-to-Sozai, Vol 109.  No 5. pp 373 -
     Rokukawa, N (1994).  "Concenration and Deposition of Cobalt
from Ammoniacal Alkaline Solution with Alcohol.' Shigen-to -
Sozai, Vol 110, No 7, pp 567-570.
     Rokukawa, N (1995).  "Development for Recovery Process of
Cobalt, Nickel and Copper from Cobalt Crusts.' Energy and
Resources, Vol 16, No 1, pp 105-109.

Item 6

K.H. Park, B.-S. Roh and D-J Kim
Korea Institute of Geology, Mining & Materials
Taejon, Korea
      The copper adsorption capacities of the manganese nodule
powder were 13mg Cu/g at solution pH 1.5, 40mg Cu/g at pH 4.5,
and 45mg Cu/g at pH 5.5, respectively.  The adsorption of copper
ions was found to be an endothermic process and increased with
temperature between 20 and 80 C from 39.9mg Cu/g to 48.7mg Cu/g. 
The adsorption of copper on the nodule powder increased with the
decreasing particle size and was not influenced by the addition
of sodium ions and different kinds of anions.  The amount of
copper adsorbed on the nodule powder descreased with the
increasing heat treatment temperature of the nodule powder.
(Without heat treatment: 40mg Cu/g, with heat treatment at 500 C
; 22.8mg Cu/g).

Key Words: Manganese nodules, Adsorption, Copper ion, Removal of
heavy metal

     Agarwal, N, Beecher, N, Davies, DS, Hubred, GL, and Kust, RN
(1976).  "Processing of ocean nodules : A technical and economic
review", JOM, APRIL, pp 24-31.
     Fuerstenau, DW and Han, KN (1983).  "Metallurgy and
Processing of Marine Manganese Nodules." Miner. Proces. Technol.
Rev., Vol 1, pp 1-83.
     Fuerstenau, DW, Herring, AP and Hoover, M (1973). 
"Charactetization and Extraction of Metals from Sea Floor
Manganese Nodules." Society of Mining Enginerrs, AIME, Vol 254,
pp 205-211.
     Fuerstenau, DW, and Palmer, BR (1976) "Anionic Flotation of
Oxides and Silicates." Flotation, Vol. 1, DW Fuerstenau.Ed..
SME/AIME.  New York
     Han, KN, and Fuerstanau, DW (1976).  "Kinetics of the
Extraction of Metals from Deep-Sea Manganese Nodules : Part 1.
The Pore Diffusion Controlling Case", Metallurgical Transactions,
Vol 7B, pp 679-685.
     Han, KN, Hoover, MP and Fuerstenau, DW (1979).  "The Effect
of Temperature on the Physico-chemical Characteristics of Deep-
sea Manganese Nodules." Marine Mining, Vol 2, pp 131-149.
     Murray, DJ, Heary, TW, and Fuerstenau, DW (1967).  "The
Adsorption of Aqueous Metal on Colloidal Hydrous Manganese
Oxide." Adsorption of Aqueous Metal, pp 74-81.
     Nishiyama, T, Kita, H, Sanada, H, Kusakabe, Y and Takahashi,
K (1984).  "The Absorption Behavior of Metal Ions on Manganese
Nodules." J. of Min. Met. Inst. of Japan, Vol 100, pp 587-591.

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