TREATMENT METHOD AND TREATMENT APPARATUS FOR REMOVING FLUORINE FROM FLUORINE-CONTAINING WASTE

摘要

PROBLEM TO BE SOLVED: To provide a treatment method for removing fluorine from waste in a shorter time than before.

SOLUTION: 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.

COPYRIGHT: (C)2012,JPO&INPIT