Patents by Inventor Helder Silva SOUZA

Helder Silva SOUZA 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).

  • Process for concentrating manganese ores via reverse cationic flotation of silicates
    Patent number: 9004286
    Abstract: A process for concentrating manganese from the tailing of a manganese-carrying mineral including removing a coarse particle size fraction from the tailing, desliming and conducting an acidic or a basic reverse cationic flotation. The manganese-carrying minerals are typically minerals with low manganese content from the lithologies “Tabular Pelite” (or PETB), Pelite Siltite (or PEST), Detritic (or DETR), Rich Pelite (or PERC) and Metallurgical Bioxide (or BXME). In another aspect, the present invention also relates to a reverse cationic flotation used to concentrate manganese which is carried out using depressor agents and collector agents as flotation reagents.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: April 14, 2015
    Assignee: Vale S.A.
    Inventors: Laurindo de Salles Leal Filho, Helder Silva Souza, André Soares Braga
  • PROCESS FOR CONCENTRATING MANGANESE ORES VIA REVERSE CATIONIC FLOTATION OF SILICATES
    Publication number: 20140216987
    Abstract: A process for concentrating manganese from the tailing of a manganese-carrying mineral including removing a coarse particle size fraction from the tailing, desliming and conducting an acidic or a basic reverse cationic flotation. The manganese-carrying minerals are typically minerals with low manganese content from the lithologies “Tabular Pelite” (or PETB), Pelite Siltite (or PEST), Detritic (or DETR), Rich Pelite (or PERC) and Metallurgical Bioxide (or BXME). In another aspect, the present invention also relates to a reverse cationic flotation used to concentrate manganese which is carried out using depressor agents and collector agents as flotation reagents.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: VALE S.A.
    Inventors: Laurindo de Salles LEAL FILHO, Helder Silva SOUZA, André Soares BRAGA