Invention Grant
- Patent Title: Recovery method for a continuous calcium extraction and PCC production
- Patent Title (中): 连续钙提取和PCC生产的回收方法
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Application No.: US13723976Application Date: 2012-12-21
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Publication No.: US08771621B2Publication Date: 2014-07-08
- Inventor: Frank A. Karbarz
- Applicant: Corex Materials, Inc.
- Applicant Address: US TX Houston
- Assignee: Corex Materials, Inc.
- Current Assignee: Corex Materials, Inc.
- Current Assignee Address: US TX Houston
- Agency: Conley Rose, P.C.
- Main IPC: C22B26/20
- IPC: C22B26/20
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.
Public/Granted literature
- US20130164198A1 Recovery Method for a Continuous Calcium Extraction and PCC Production Public/Granted day:2013-06-27
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