LOW VISCOSITY COPPER SOLVENT EXTRACTION REAGENT FORMULATIONS

A low viscosity water insoluble extraction reagent composition according to the invention is comprised of: (a) an extractant selected from the group consisting of an aldoxime, a ketoxime, or a combination thereof; (b) an equilibrium modifier having a Brookdield viscosity of equal to or less than abo...

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Bibliographische Detailangaben
1. Verfasser: OLAFSON, STEPHEN, M
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:A low viscosity water insoluble extraction reagent composition according to the invention is comprised of: (a) an extractant selected from the group consisting of an aldoxime, a ketoxime, or a combination thereof; (b) an equilibrium modifier having a Brookdield viscosity of equal to or less than about 5 centapoise at 25¦C and a flash point equal to or greater than about 141¦F wherein the molar ratio of modifier to extractant is from about 0.05 to about 2.0 so as to provide a net copper transfer greater than that achieved in the absence of modifier. Such low viscosity extractants afford higher recoveries of copper, permit reduced equipment size such as smaller mixers and settlers and the use of reduced amounts of less overall organic inventory. Una composicion reactiva de extraccion insoluble en agua de baja viscosidad que comprende: (a) un extractor seleccionado a partir del grupo que comprende una aldoxima, una cetoxima, o una combinacion de las mismas.; (b) un modificador de equilibrio que tiene una viscosidad Brookfiel igual a o menos de aproximadamente 5 centapoise a 25¦C y un punto de vaporizacion igual a o mayor de aproximadamente 114¦F en donde la relacion molar de modificador a extractor es desde aproximadamente 0.05 hasta aproximadamente 2.0 a fin de proporcionar una transferencia de cobre neta mayor que la lograda en ausencia del modificador. Dichos extractores de baja viscosidad logran mayores recuperaciones de cobre, permiten tamano de equipo reducido tales como mezcladores y sedimentadores mas pequeno y el uso de cantidades reducidas de menos inventario general de fase organica.