Patents by Inventor Toralv Basen

Toralv Basen 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).

  • Column for treating particulate materials with a gas
    Patent number: 5092564
    Abstract: The present invention relates to a method for production of metals and/or ferro alloys by prereduction of particulate metal oxide co-current with a reducing gas. Reducing gas having a temperature between 650.degree. and 1100.degree. C. and metal oxide particles are supplied at the lower end of a substantially vertical prereduction column which comprises at least two chambers having a substantially circular cross-section, said chambers in their upper and lower ends having a decreasing cross-section and where a ringshaped member for decreasing the cross-section is arranged in the intermediate zone between the chambers. The mixture of reducing gas and prereduced metal oxide particles is collected at the top of the prereduction column, whereafter the prereduced metal oxide particles are transported to a smelting furnace for smelting and final reduction to metallix state by addition of a reduction material.The present invention also relates to a column for treatment of particulate solid materials with a gas.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: March 3, 1992
    Assignee: Elkem Technology a/s
    Inventors: Toralv Basen, Robin Ephithite
  • Method for production of metals of ferroalloys by direct reduction
    Patent number: 4975116
    Abstract: The present invention relates to a method for production of metals and/or ferro alloys by prereduction of particulate metal oxide co-current with a reducing gas. Reducing gas having a temperature between 650.degree. and 1100.degree. C. and metal oxide particles are supplied at the lower end of a substantially vertical prereduction column which comprises at least two chamber having a substantially circular cross-section, said chambers in their upper and lower ends having a decreasing cross-section and where a ringshaped member for decreasing the cross-section is arranged in the intermediate zone between the chambers. The mixture of reducing gas and prereduced metal oxide particles is collected at the top of the prereduction column, whereafter the prereduced metal oxide particles are transported to a smelting furnace for smelting and final reduction to metallic state by addition of a reduction material.The present invention also relates to a column for treatment of particulate solid materials with a gas.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: December 4, 1990
    Assignee: Elkem Technology a/s
    Inventors: Toralv Basen, Robin Ephithite