Patents Assigned to Ferro, LLC
  • Process, method and system for removing mercury from fluids
    Patent number: 7901585
    Abstract: There are provided methods and processes that employ a mercury-adsorbing granular material as a sorbent to remove mercury from fluids. The fluids can be waste fluids that result from manufacturing, processing, or other treatment processes or systems. The fluids can also be fluids that are treated in their natural state. The fluids to be treated may include water, air, sludge, slurries, gases from processing or furnaces flues, gaseous flows, liquid flows, and other gases and liquids. In one excellent form of the invention, the mercury-adsorbing material includes taconite tailings.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: March 8, 2011
    Assignee: Ferro, LLC
    Inventors: Larry J. Lehtinen, Jeffrey A. Hansen
  • Process, method and system for removing mercury from fluids
    Patent number: 7666318
    Abstract: There are provided methods and processes that employ a mercury-adsorbing granular material as a sorbent to remove mercury from fluids. The fluids can be waste fluids that result from manufacturing, processing, or other treatment processes or systems. The fluids can also be fluids that are treated in their natural state. The fluids to be treated may include water, air, sludge, slurries, gases from processing or furnaces flues, gaseous flows, liquid flows, and other gases and liquids. In one excellent form of the invention, the mercury-adsorbing material includes taconite tailings.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: February 23, 2010
    Assignee: Ferro, LLC
    Inventors: Larry J. Lehtinen, Jeffrey A. Hansen