... ABSTRACT During pyro-reduction smelting of manganese deep sea nodules from the Clairon Clipperton zone in the Pacific Ocean the copper, nickel and cobalt are concentrated in intermediate product - polymetallic alloy. Characteristic property of the alloy is its high content of iron (65.90...

... process of manganese nodule to recovery valuable metals containing in this materials. The nickel in the spent Ni-Cd battery could be recovered with adding 5% coke as a reducing agent regardless of the amount of battery added. However, to recover cobalt from the spent catalyst, it is required to add more...

... Nodules and Crust Economics: Relationship Between Cobalt and Nickel Price Simone Martino, Lindsay M. Parson Department of Geology and Geophysics, UNCLOS Group, National Oceanography Centre Southampton, UK ABSTRACT This paper compares the economic feasibility of two deep seabed mining deposits...

... bearing both high and low manganese content was carried out in a stainless steel reactor fitted with a turbo grid. Air/O2 was used to precipitate Mn as MnO2. There was adsorption loss of cobalt from solution. There was precipitation of 57.2 - 99.96% Mn with loss of 3% Cu, 3.5% Ni and 2.9% Co...

... ABSTRACT: Polymetallic (Manganese) nodules attracted the attention of world community in the mid sixties as a potential economic resource of strategic minerals like Copper, Nickel and Cobalt. Since then both industrialized and developing countries have become increasingly aware of the economic...

..., nickel, cobalt, manganese, iron, lead, zinc, aluminum, etc. Of these, copper, nickel and cobalt are of much importance and in great demand world over. In fact, due to their extensive technological use these three metals are fast depleting from the earth surface. Hence a world-wide research is progressing...

... liquor of manganese nodule the leach liquor contained copper, nickel, cobalt and zinc in solution. After stripping of ammonia, the metal values were precipitated using sodium sulphide. The leach liquor obtained after dissolution of this bulk sulphide contains 204.59 mol/m3 Cu, 40.83 mol/m3 Zn, 33.94 mol...

... ABSTRACT A series of pilot tests have been conducted by adopting the reductive ammonia leaching methods on ocean poly-metallic nodules, where copper consisted in the mineral acts as the catalyst and carbon monoxide as the reducing agent. Value metals such as nickel, cobalt, and copper etc...

... ABSTRACT The leached solution obtained through treatment on ocean cobalt-rich crusts with activated sulfuric acid leaching processes was transformed into nickel and cobalt concentrated solution after removal of copper, zinc and manganese by extraction process. N235 was selected...

... regional research laboratory solvent extraction polymetallic nodule cobalt pulp density residue nodule dissolution sulphide concentration metals & mining metal material bhubaneswar demanganisation Proceedings ofThe Fourth (2001) Ocean Mining Symposium Szczecin, Poland, September 23-27...

... leach liquor hydrometallurgy ocean nodule isodecanol extraction isotherm nickel organophosphorous acid cobalt separation concentration kerosene flow sheet solvent extraction acid metals & mining extractant extraction alloy downstream oil & gas ABSTRACT: Three...

... ABSTRACT: Polymetallic sea nodules are the potential sources of copper, nickel, cobalt and manganese. As the land based resources of these metals are depleting very fast, a considerable R&D effort have been made all over the world to extract the metals from the sea nodules during the past...

.... Fonseca, R. Sadanandam S.K. Tangri and A.K. Suri Materials Processing Division,BARC, Mumbai - 400 085 INTRODUCTION, ABSTRACT The sulphide leach liquor obtained from ocean nodules contains number of.impurities like iron, copper and zinc in addition to valuable metals like nickel and cobalt. Both...

... and manganese carbonate, cobalt oxide and iron red) are Cu 94.21, Co 95.23, Ni 96.49, Mn 97.68 and Fe 96.16. The recoveries of metals in the large scale test from. nodule ore to related products(Mn-Si alloy, rusting solution and ferric oxide) are Cu 94.52, Co 96.57, Ni 96.56, Mn 81.90 and Fe 99.57. The results...

...Proceedings ofthe Third (1999) Ocean Mining Symposium Goa, India, November 8-10,1999 Copyright © 1999 by The International Society ofOffihore and Polar Engineers . ISBN 1-880653-45-1 Simultaneous Spectrophotometric Estimation of Iron, Copper, Cobalt and Nickel in Ocean Nodule Leach Liquor M.V. Rane...

... ABSTRACT: Nickel and cobalt are a pair of critical strategic materials with widespread utility. However, scarcity of their primary resources has led to an intense search for alternate resources. This paper discusses some of the flowsheets developed in our laboratory to recover these metals...

.... There is now little doubt that PMN forms an important source for Ni, Co, Cu and possibly other elements like Mn. ammonia precipitation metals & mining polymetallic nodule das cobalt reductant ocean nodule manganese recovery extraction indian ocean nodule selectivity manganese nodule...

.... The dissolution of copper and nickel was found to be controlled by volume reaction model. INTRODUCTION Manganese nodules which are comprised mainly of oxides of manganese and iron are now widely recognized as potential resources of various metals such as cobalt, nickel and copper. The physico-chemical...

..., Das, Ray and Biswas 1991 and 1994). and to selectively reduce the oxide phases of Cu, Ni and Co to elemental form to make them amenable to leaching. fluidized bed sea nodule experiment coke oven gas furnace oil cobalt reductant manganese nodule reduction ofsea nodule weight...

... ABSTRACT: The ammonia-ammonium carbonate leaching of roast-reduced polymetallic nodules analysing 1.175% copper, 1.625% nickel and 0.116% cobalt was carried out in lock cycle mode. The steady state composition was analysing 2.40 g/L copper, 3.41 g/L nickel and 0.163 g/L cobalt with leach...