The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2015
Filed:
Aug. 01, 2008
Renato DE Souza Costa, Belo Horizonte, BR;
Flávia Dutra Mendes, Belo Horizonte, BR;
Renato de Souza Costa, Belo Horizonte, BR;
Flávia Dutra Mendes, Belo Horizonte, BR;
VALE S.A., Rio de Janeiro, BR;
Abstract
The present invention is directed to a hybrid process using ion exchange resins in the selective recovery of nickel and cobalt of leaching effluents that is comprised of the steps of processing () the laterite ore (M), which is then treated through leaching () (either atmospheric or under pressure), considering solutions from the solid-liquid separation step of existing plants already in operation () as well, in a way that the downstream process comprises an ion exchange hybrid circuit, wherein the first ion exchange step () with resins (Re) exhibits specific selectivity conditions for the removal of iron, aluminum and copper and an increased pH, and the second ion exchange step () allows the removal of nickel and cobalt.