Patents by Inventor Flavio De Castro Dutra

Flavio De Castro Dutra 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).

  • Publication number: 20220106664
    Abstract: The present invention relates to a process for the production of iron ore fines agglomerate, resistant to handling, transport, and contact with water. The process consists of mixing iron ore fines with sodium silicate, nanomaterials, catalyst, fluxes and plasticizer; adjusting the moisture of the mixture; agglomerating the mixture by pelletizing, briquetting or extrusion; performing curing at room temperature. The process does not require energy input for heat treatment and allows obtaining an agglomerated product with high physical and metallurgical performance to replace metallic load, including sinter, in reduction furnaces, without the emission of harmful gases such as CO2, dioxins, furans, and SOx.
    Type: Application
    Filed: November 8, 2019
    Publication date: April 7, 2022
    Inventors: Flávio de Castro DUTRA, Valdirene Gonzaga DE RESENDE, Fabricio Vilela PARREIRA
  • Patent number: 9175364
    Abstract: An ore fine agglomerate to be used in a sintering process is disclosed, wherein the ore fine agglomerate is formed by a mixture of ore fine particles and an agglomerating agent, and wherein the particles have diameters between 0.01 mm and 8.0 mm. A production process of ore fines agglomerate is disclosed comprising the steps of using ore fine particles with a granulometry lower than 0.150 mm, mixing the ore fine particles with an agglomerating agent in a ratio of 0.5 to 5.0% by mass of sodium silicate, forming wet particles with diameters between 0.01 mm and 8.0 mm with an addition of water, and drying the wet particles at a temperature varying from 100° C. and 150° C. to form dry particles that are resistant to mechanical efforts and the elements.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: November 3, 2015
    Assignee: VALE S.A.
    Inventors: Hamilton Porto Pimenta, Flavio De Castro Dutra
  • Patent number: 8999032
    Abstract: An application of carbon nanotubes on agglomerates of ore fines to increase the mechanical strength is provided. A process for the preparation of ore agglomerates having enhanced mechanical strength by the application of the carbon nanotubes is also provided.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 7, 2015
    Assignee: Vale S.A.
    Inventors: Flavio de Castro Dutra, Hamilton Porto Pimenta, Valdirene Gonzaga De Resende, Aloísio Antônio de Melo Borges
  • Publication number: 20130243973
    Abstract: An application of carbon nanotubes on agglomerates of ore fines to increase the mechanical strength is provided. A process for the preparation of ore agglomerates having enhanced mechanical strength by the application of the carbon nanotubes is also provided.
    Type: Application
    Filed: September 10, 2012
    Publication date: September 19, 2013
    Applicant: VALE S.A.
    Inventors: Flavio de Castro Dutra, Hamilton Ports Pimenta, Valdirene Gonzaga De Resende, Aloísio Antônio de Melo Borges
  • Publication number: 20110232420
    Abstract: An ore fine agglomerate to be used in a sintering process is disclosed, wherein the ore fine agglomerate is formed by a mixture of ore fine particles and an agglomerating agent, and wherein the particles have diameters between 0.01 mm and 8.0 mm. A production process of ore fines agglomerate is disclosed comprising the steps of using ore fine particles with a granulometry lower than 0.150 mm, mixing the ore fine particles with an agglomerating agent in a ratio of 0.5 to 5.0% by mass of sodium silicate, forming wet particles with diameters between 0.01 mm and 8.0 mm with an addition of water, and drying the wet particles at a temperature varying from 100° C. and 150° C. to form dry particles that are resistant to mechanical efforts and the elements.
    Type: Application
    Filed: November 17, 2010
    Publication date: September 29, 2011
    Applicant: VALE S.A.
    Inventors: Hamilton Porto Pimenta, Flavio De Castro Dutra