Results 51 to 54 of about 82 (54)

Gold(I) extraction from cyanide media by the primary amine Primene 81R/iso-decanol system

Hydrometallurgy, 1994
Abstract The extraction of gold(I) from cyanide solutions using the primary amine Primene 81R has been studied taking into account the variables temperature, agitation time, metal and amine concentration and aqueous ionic strength. The results show that gold(I) is extracted by means of a complex with the possible stoichiometric formula: [RNH 3 + Au(
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Gold(I) extraction equilibrium in cyanide media by the synergic mixture Primene 81R-Cyanex 923

Hydrometallurgy, 1994
Abstract The extraction system formed by the synergic mixture primary amine Primene 81R and the phosphine oxide Cyanex 923, has been studied for a possible application in gold(I) extraction in cyanide media, taking into account the variables that could affect the extraction of this metal, such as agitation time, temperature, aqueous ionic strength ...
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Comparative study of solvent extraction of vanadium from sulphate solutions by primene 81R and alamine 336

Minerals Engineering, 2003
A comparative study of the solvent extraction of vanadium in sulphate media using primary amine PRIMENE 81R and tertiary amine ALAMINE 336 dissolved in kerosene has been carried out. pH conditions for both amines, mechanism proposal and extraction isotherms have been determined, yielding best results for primary amine.
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Corrigendum to “Comparative study of solvent extraction of vanadium from sulphate solutions by primene 81R and alamine 336 [Minerals Engineering 16 (2003) 291–294]”

Minerals Engineering, 2004
L.J Lozano, C Godı́nez
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