Patents by Inventor Panu Talonen

Panu Talonen 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).

  • Method and apparatus for controlling metal separation
    Patent number: 8021459
    Abstract: The invention relates to a method and apparatus for controlling a continuous metal removal in conjunction with a zinc preparation process, in which the metal removal is performed in one or more reactors (11a-c), in conjunction with the reactor, the redox potential (16a-c) and the acidity and/or basicity are measured, and based on the measurement results, the process variables (17a-c) of the metal removal are adjusted towards the desired direction. According to the invention, the redox potential measurements (16a-c) are performed from the sludge produced in the reactor in conjunction with the outlet pipe of the reactor outside the reactor, and the measuring instrument (16a-c) is purified at predetermined intervals.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: September 20, 2011
    Assignee: Outotec Oyj
    Inventors: Aimo Järvinen, Kai Judin, Harri Natunen, Yrjö Oinonen, Panu Talonen
  • Method for the precipation of silica in connection with zinc ore leaching
    Patent number: 7615100
    Abstract: The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is precipitated as silica.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: November 10, 2009
    Assignee: Outotec Oyj
    Inventors: Sigmund Fugleberg, Pertti Pekkala, Panu Talonen, Marja Riekkola-Vanhanen
  • Method and Apparatus for Controlling Metal Separation
    Publication number: 20070273071
    Abstract: The invention relates to a method and apparatus for controlling a continuous metal removal in conjunction with a zinc preparation process, in which the metal removal is performed in one or more reactors (11a-c), in conjunction with the reactor, the redox potential (16a-c) and the acidity and/or basicity are measured, and based on the measurement results, the process variables (17a-c) of the metal removal are adjusted towards the desired direction. According to the invention, the redox potential measurements (16a-c) are performed from the sludge produced in the reactor in conjunction with the outlet pipe of the reactor outside the reactor, and the measuring instrument (16a-c) is purified at predetermined intervals.
    Type: Application
    Filed: July 15, 2004
    Publication date: November 29, 2007
    Applicant: OUTOKUMPU TECHNOLOGY OY
    Inventors: Aimo Jarvinen, Kai Judin, Harri Natunen, Yrjo Oinonen, Panu Talonen
  • Method for the removal of calcium from a zinc process sulfate solution
    Publication number: 20040089103
    Abstract: The invention relates to a method for removing calcium from a sulfate solution in the zinc production process. Calcium is removed as an anhydrate from the raw solution coming from concentrate or ore leaching before the solution purification stages.
    Type: Application
    Filed: September 9, 2003
    Publication date: May 13, 2004
    Inventor: Panu Talonen
  • Method for the precipation of silica in connection with zinc ore leaching
    Publication number: 20040074340
    Abstract: The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is precipitated as silica.
    Type: Application
    Filed: September 10, 2003
    Publication date: April 22, 2004
    Inventors: Sigmund Fugleberg, Pertti Pekkala, Panu Talonen, Marja Riekkola-Vanhanen