Patents by Inventor Andres Antonio Reghezza Insunza

Andres Antonio Reghezza Insunza 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).

  • Hydrometallurgical process for the treatment of copper bearing ore
    Patent number: 5527382
    Abstract: A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of first wetting and sulfatizing the ore with controlled amounts of H.sub.2 SO.sub.4 and water, followed by acid curing and repulping to sulfatize a substantial portion of the copper in the ore. Also, the fine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H.sub.2 SO.sub.4 solution obtained during the copper recovery process. Since the coarse fraction is classified from the fine fraction, the pile leaching process is performed at very high specific flows, which substantially reduces the leaching period as compared with that of conventional pile leaching.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: June 18, 1996
    Assignee: Corporacion Nacional Del Cobre De Chile
    Inventors: Aliro Teodoro Nelson Pincheira Alvarez, Andres Antonio Reghezza Insunza, Alberto Segundo Cruz Rivera
  • Hydrometallurgical process for the treatment of copper-bearing ore
    Patent number: 5356457
    Abstract: A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of first wetting and sulfatizing the ore with controlled amounts of H.sub.2 SO.sub.4 and water, followed by acid curing and repulping to sulfatize a substantial portion of the copper in the ore. Also, the fine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H.sub.2 SO.sub.4 solution obtained during the copper recovery process. Since the coarse fraction is classified from the fine fraction, the pile leaching process is performed at very high specific flows, which substantially reduces the leaching period as compared with that of conventional pile leaching.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: October 18, 1994
    Assignee: Corporacion Nacional Del Cobre De Chile
    Inventors: Aliro Teodoro Nelson Pincheira Alvarez, Andres Antonio Reghezza Insunza, Alberto Segundo Crus Rivera