Patents Assigned to Corex Materials, Inc.
  • Recovery method for a continuous calcium extraction and PCC production
    Patent number: 8771621
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium nitrate to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium nitrate. The precipitate is separated from the aqueous ammonium nitrate by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 8, 2014
    Assignee: Corex Materials, Inc.
    Inventor: Frank A. Karbarz
  • Recovery Method for a Continuous Calcium Extraction and PCC Production
    Publication number: 20130164198
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium nitrate to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium nitrate. The precipitate is separated from the aqueous ammonium nitrate by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Applicant: Corex Materials, Inc.
    Inventor: Corex Materials, Inc.