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Title:
TREATMENT METHOD AND TREATMENT APPARATUS FOR REMOVING FLUORINE FROM FLUORINE-CONTAINING WASTE
Document Type and Number:
Japanese Patent JP2011242000
Kind Code:
A
Abstract:

To provide a treatment method for removing fluorine from waste in a shorter time than before.

The treatment method for removing fluorine uses a heating furnace, a steam supply means and a gas treating means, and the method includes: an introduction step of introducing the waste into the heating furnace; a reaction step of supplying water vapor or water to the heating furnace to bring water vapor into contact with the waste; and a recovery step of bringing the produced hydrogen fluoride-containing gas into contact with water in the gas treating means and recovering fluorine as an aqueous solution of hydrogen fluoride. The waste can be slag produced in a steel making step.


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Inventors:
YASUDA RYOKO
ADACHI TAKIO
MATSUURA TOSHIRO
Application Number:
JP2010111965A
Publication Date:
December 01, 2011
Filing Date:
May 14, 2010
Export Citation:
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Assignee:
TSUKISHIMA KANKYO ENG LTD
International Classes:
F27D15/00; B01D53/14; B01D53/68; B01D53/77; B09B3/00; C02F1/58; C21C5/28
Domestic Patent References:
JPS63210246A1988-08-31
JP2000180073A2000-06-30
JPH0326384A1991-02-04
Foreign References:
US4735784A1988-04-05
Attorney, Agent or Firm:
Yoshihisa Nagai



 
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