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Keywords: reaction
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Proceedings Papers

Paper presented at the Tenth ISOPE Ocean Mining and Gas Hydrates Symposium, September 22–26, 2013
Paper Number: ISOPE-M-13-036
... of gas hydrates is seen as a two-step process of (1) a fast interfacial reaction (2) followed by much slower diffusion-limited transport. particle neutron diffraction molecule clathrate hydrate transformation upstream oil & gas kuh natural gas hydrate flow assurance sediment ch 4...
Proceedings Papers

Paper presented at the Tenth ISOPE Ocean Mining and Gas Hydrates Symposium, September 22–26, 2013
Paper Number: ISOPE-M-13-071
... ammonia leaching was carried out, in which the copper ion leached out of the raw materials, the Co-Mn polymetallic ores, was taken as the catalyst and CO as the reducing agent. The concentration of copper in the leaching solution has great effect on the oxidation-reduction reaction rate, and the reaction...
Proceedings Papers

Paper presented at the Ninth ISOPE Ocean Mining Symposium, June 19–24, 2011
Paper Number: ISOPE-M-11-009
... ABSTRACT: Formation efficiency of CO2 hydrate from submicron ice was investigated by laboratory experiments and numerical models. Since formation rate of hydrate changes as the surface area of reaction interface decreases, temporal variation of formation rate was taken into account...
Proceedings Papers

Paper presented at the Sixth ISOPE Ocean Mining Symposium, October 9–13, 2005
Paper Number: ISOPE-M-05-038
... of natural gas from hydrates commercially viable, hydrates must be dissociated in-situ. reaction pure water thermocouple inner temp temperature change core sample upstream oil & gas dissociation hydrate outer temp experiment equilibrium temperature dissociation experiment flow...
Proceedings Papers

Paper presented at the Fifth ISOPE Ocean Mining Symposium, September 15–19, 2003
Paper Number: ISOPE-M-03-038
... unique characteristic properties. This paper qualitatively compares PMN with terrestrial raw material, economic feasibility of processing it, and ways and means to improve its economy. raw material concentrate nicuco concentrate residue reaction polymetallic nodule processing pmn processing...
Proceedings Papers

Paper presented at the Fourth ISOPE Ocean Mining Symposium, September 23–27, 2001
Paper Number: ISOPE-M-01-030
... 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...
Proceedings Papers

Paper presented at the First ISOPE Ocean Mining Symposium, November 21–22, 1995
Paper Number: ISOPE-M-95-029
... when leached in 5N NH4CI at 80°C for 2.5hr. The dissolution rates of Mn, Ni and Cu are controlled by pore diffusion, while that of Fe is controlled by surface chemical reactons and that of Co is controlled by both the surface chemical reaction and pore diffusion process. Introduction In this process...

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