... areas well within the EEZ of India. substrate us government nodule mineral island composition halbach marine geology upstream oil & gas metals & mining exploration cronan encrustation hein ferromanganese deposit reservoir characterization deposit manheim seamount...

... ABSTRACT Methane-dominated gas hydrates deposits are considered as a potential hydrocarbon resource and storage medium for anthropogenic CO 2 by gas replacement. We establish Raman spectroscopy as a quantitative tool to determine the composition of mixed gas hydrates. Using our empirical...

... dissolution of copper and nickel-cobalt sulphide precipitates; separation of cobalt from nickel by solvent extraction with Cyanex 272. The obtained electrolytes have a composition suitable for the extraction of copper, nickel and cobalt by electrowinning. The main advantage of the proposed scheme...

... oil & gas iom exploration area grain size distribution polymetallic nodule ultrasonic treatment szczecin exploration area sediment structural geology composition depth interval classification university size distribution reservoir characterization particle siliceous silty clay...

... and CO2 indicated by Raman spectrometry. Gas composition and isotope geochemistry show that gases from gas hydrate mainly originate from thermo-genesis. Furthermore, a practical formula is put forward for estimation of gas hydrate resources and the total amount is estimated to be 446.5 × 104 m3 methane...

... metals & mining silicomanganese alloy composition fe-mn slag alloy leached sea nodule residue manganese ore chemical composition residue sea nodule residue reduction Production of Silicomanganese Alloy from Low Manganese Containing Leached Sea Nodules Residue R. K. Jana and N. S...

... al . EXPERIMENT Experimental material and procedure Experimental material . The material used in this experiment is a trawl sample which comes from Chinese cobalt-rich crust resource zone. mineral copper ore cobalt-rich crust manganese purification process nickel composition...

... for the Os in the ocean. INTRODUCTION The ferromanganese oxides in marine sediments have recorded the seawater Os isotope composition when they were deposited. Therefore, sediments containing ferromanganese oxides, e.g. carbonates, metaliferous siliceous ooze, ocean clay, ferromanganese crust...

... and dissolution. Initial studies on direct reduction smelting of Indian sea nodule were conducted using coke as reductant in lab scale experiments. Various parameters like smelting temperature, reductant concentration, holding time etc. have been optimized to obtain an alloy of suitable composition. At a smelting...

... ABSTRACT: The dissolution of FeCuNiCoMn alloy, with composition in mass %: 65.90 Fe, 12.07 Cu, 12.81 Ni, 1.33 Co, 5.33 Mn and 2.56 others in aqueous SO 2 -H 2 SO 4 -H 2 O medium has been investigated. The alloy was obtained during reduction smelting of manganese nodules from the Clairon...

... sampling by boxcorer, which comprise about 22.6% of all sampled stations performed during that studies. This paper summarizes the distribution pattern, abundance, types, and chemical composition of buried nodules as well as defines some of the factors and conditions potentially responsible for their origin...

... ash slurries were experimentally investigated with respect to the solid phase concentration and composition and their flow behavior was evaluated. KEY WORDS: complex slurry; sand; Kaolin; fluidic ash; effect of particle size distribution; effect of shearing. NOMENCLATURE B material parameter cv slurry...

... seamount hydrogenetic crust pacific plate metals & mining ferromanganese crust ferromanganese deposit crust regional variation composition deposit substrate rock abundance knowledge management Factors Controlling the Grade and Abundance of Ferromanganese Crusts: The Northwestern Pacific...

... calculation, 15.0 nm pure CH4, bulk [12] pure CO2, bulk [12] calculation, bulk Fig. 3. Hydrate phase equilibria of the ternary CH4 + CO2 + water mixtures of various CO2 compositions (20, 40, 60 and 80 mol%) in 15.0 nm silica gel pores 152 Three-phase H-LW-V equilibria for the ternary CH4 + CO2 + water...

... and/or precipitation experiments the liquors were sampled, filtered, and diluted for metal analysis by AAS. The leach residues and/or individual precipitates were washed, dried at 90°C and weighed. Their elemental composition was estimated by the semiquantitive emission spectroscopy and/or by chemical analysis...

... that there is a reserve for spending financial means for developing this resource. It would be interesting to determine how much is the expenditure on exploration raw materials on the land for given value of the above mentioned elements. 2. Composition together with physical and chemical properties of the nodules...

... iron extraction sulfur dioxide acid solution concentration nodule ore acid extraction composition capital investment manganese precipitation marine nodule slurry liquor characteristic precipitation reaction atmospheric pressure metals & mining sulfide precipitation...

... Irlare: Fe 89.49, Cu 2.5, Co 2.08, Ni 4.78. Mn 0.43 The compositions oralloy 2#are: Fe 66.45, Cu 12.05, Co 2.37, ~i 17.19. tvln 1.85 )" FeSO-l 85 0.0 11 -585 I" FeSO-l 65 0.031 -597 I" FeSO-l 45 0.117 -616 I" FeSO.j 25 0.158 -605 I" FcCI2 25 0.154 -606 2" r:eSO.j 25 0.243 -481 2# FeCl2 25 0.190 -481...

... 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...

... ABSTRACT: The regional patterns in distribution and composition of deep-sea mineral deposits are characterized in relation to geological setting in the NW Pacific, based on compilation of geological and geochemical data for ferromanganese crusts and nodules, massive polymetallic sulfide...