Patents by Inventor Antonio C. Pereira

Antonio C. Pereira has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8834598
    Abstract: Aspects of the present invention refer to a MHP process do produce rough ferro-nickel product and that may include the steps of mixing nickel hydroxide with an iron source and slagging agents, putting the mixture in contact with a reducing agent producing a ferronickel alloy, and producing a roasted product that has disseminated ferronickel alloy inside the structure.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: September 16, 2014
    Assignee: Vale S.A.
    Inventors: Tiago V. Berni, Antonio C. Pereira
  • Publication number: 20120308450
    Abstract: A method for recovering base metal values from oxide ore is provided, where the ore includes a first group metal selected from nickel, cobalt and copper. The method includes reducing ore particle size to suit the latter unit operation, favoring contact for the metal elements, contacting the ore with ferric or ferrous chloride, hydrated or anhydrous, to produce a mix of ore and iron (II or III) chloride subjecting the mixture of the ore and ferric or ferrous chloride to enough energy to decompose the chlorides into hydrochloric acid and a iron oxides from the second group, forming their respective chlorides, selectively dissolve the produced base metal chlorides, leaving the metal as oxides and in the solid state, and recovering the dissolved base metal values from aqueous solution.
    Type: Application
    Filed: July 14, 2010
    Publication date: December 6, 2012
    Applicant: VALE S.A.
    Inventors: Antonio C. Pereira, Tiago V. Berni
  • Publication number: 20120198967
    Abstract: Aspects of the present invention refer to a MHP process do produce rough ferro-nickel product and that may include the steps of mixing nickel hydroxide with an iron source and slagging agents, putting the mixture in contact with a reducing agent producing a ferronickel alloy, and producing a roasted product that has disseminated ferronickel alloy inside the structure.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 9, 2012
    Applicant: VALE S/A
    Inventors: Tiago V. BERNI, Antonio C. Pereira