Title:
METHOD FOR RECYCLING FLY ASH CONTAINING LARGE AMOUNTS OF CAO
Document Type and Number:
WIPO Patent Application WO/2012/033317
Kind Code:
A2
Abstract:
Disclosed is a method for recycling fly ash containing large amounts of calcium oxide (CaO), and more particularly, a method by which fly ash produced at a fluidized bed boiler of a thermal power plant is divided into magnetic fly ash and non-magnetic fly ash, wherein the non-magnetic fly ash is mixed with cement to produce aggregate, and the magnetic fly ash is mixed with bottom ash produced at the fluidized bed boiler to produce lightweight aggregate. According to the method of the present invention, the fly ash and the bottom ash reclaimed yearly from a power plant may be effectively recycled by being used in the production of aggregate, environmental problems caused by coal ash reclamation may be addressed, aggregate production may become economical with lower raw material cost, and the production of aggregate having higher compression intensity may be possible.
Inventors:
LEE KANG HOON (KR)
Application Number:
PCT/KR2011/006557
Publication Date:
March 15, 2012
Filing Date:
September 05, 2011
Export Citation:
Assignee:
LEE KANG HOON (KR)
International Classes:
C04B18/06; B03B13/04; B09B3/00; C04B35/64
Foreign References:
| JPH1129346A | 1999-02-02 | |||
| JP2005074349A | 2005-03-24 | |||
| EP0582008A1 | 1994-02-09 | |||
| KR20100004568A | 2010-01-13 |
Attorney, Agent or Firm:
LEE, Cheo Young (KR)
이처영 (KR)
이처영 (KR)
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