Patents Assigned to ECOMETALES LIMITED
  • Procedure for obtaining scorodite with a high arsenic content from acidic solutions with high content of sulfuric acid
    Patent number: 11220437
    Abstract: The present invention provides a process that allows the oxidation of trivalent arsenic and ferrous ion, simultaneous with neutralization of the acid solution to be treated, the precipitation of arsenic and oxidized ferric iron added in a molar ratio Fe:As determined at a defined pH, all of the above with a high efficiency of precipitation of arsenic as ferric arsenate or scorodite, obtaining a final residue stable in the long term, characterized by their higher content of arsenic in a lower volume compared with the procedures described in the state of the prior art.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 11, 2022
    Assignee: EcoMetales Limited
    Inventors: Marcelo Gustavo Acuna Goycolea, Enrique Anselmo Roman Espinoza, Ricardo Miguel Pezoa Conte
  • PROCESS FOR RECOVERY OF TECHNICAL GRADE MOLYBDENUM FROM DILUTED LEACHING ACID SOLUTIONS (PLS), WITH HIGHLY CONCENTRATED ARSENIC, FROM METALLURGICAL RESIDUES
    Publication number: 20140301918
    Abstract: A method for recovering technical-grade molybdenum from diluted acid leaching solutions (PLS) that have a high arsenic concentration is disclosed.
    Type: Application
    Filed: August 24, 2012
    Publication date: October 9, 2014
    Applicant: ECOMETALES LIMITED
    Inventors: Felipe Andres Lagno Sanchez, Ricardo Fernando Sepúl Veda Letelier, Marcelo Gustavo Acuña Goycolea