Title:
METHOD FOR REDUCING BORON CONTENT IN BORON-CONTAINING OXIDE OF RARE-EARTH ELEMENT
Document Type and Number:
Japanese Patent JP2016183064
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method that can effectively reduce a boron content in a boron-containing oxide of a rare-earth element using a carbonate or an oxide of an alkali metal and recover the oxide of a rare-earth element of a low content of the alkali metal.SOLUTION: A boron-containing oxide of a rare-earth element is subjected to heat treatment together with a carbonate and/or an oxide of an alkali metal in a container made of iron.SELECTED DRAWING: Figure 1
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Inventors:
HOSHI HIROYUKI
Application Number:
JP2015063509A
Publication Date:
October 20, 2016
Filing Date:
March 25, 2015
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
C01F17/00; H01F41/02
Attorney, Agent or Firm:
Yuji Tsujida
Yoshihiro Shimizu
Shinichi Abe
Yoshihiro Shimizu
Shinichi Abe