Patents by Inventor Aliro Teodoro Nelson Pincheira Alvarez

Aliro Teodoro Nelson Pincheira Alvarez 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 separating contaminants from organic phases during hydrometallurgical extraction of metals
    Patent number: 5772730
    Abstract: A method of removing aqueous phase residues and other contaminants from the organic phase used in hydrometallurgical extraction processes comprises passing the organic phase through a column or other vessel in which a porous bed of elements of suitable size and shape to permit flow therethrough is provided. The material making up the bed elements may be polyethylene, polypropylene, nylon, teflon, stainless steel, plastics in general and their derivatives, or combinations thereof. The aqueous phase coalesces on the surfaces of the materials making up the bed and forms droplets which drop to the bottom of the column or vessel which are thereafter removed.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: June 30, 1998
    Assignee: Corporacion Nacional Del Cobre De Chile
    Inventors: Gustavo Holger Bannach Sichtermann, Aliro Teodoro Nelson Pincheira Alvarez, Andres Antonio Reghezza Inzunza, Alberto Segundo Cruz Rivera, Gino Salvador Slanzi Guerra, Ernesto Otmardo Riedel Hohmann, Elias Ahmed Yuri Spataris
  • 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