Title:
COLLECTING AGENT FOR CONCENTRATING NIOBIUM
Document Type and Number:
Japanese Patent JP2001321695
Kind Code:
A
Abstract:
To efficiently recover niobium and to obtain a collecting agent for concentrating niobium having an excellent sorting effect.
This collecting agent for concentrating niobium consists of polyamines expressed by formula (1). In formula (1), R is an 8-22C straight-chain or branched-chain hydrocarbonic radical, (x) is a number of 1 to 5, (y) and (z) are each a number of 0 to 5, however (y) and (z) are never 0 at the same time.
Inventors:
SASAKI HIROTAKA
IIZUKA MASANORI
IIZUKA MASANORI
Application Number:
JP2000147381A
Publication Date:
November 20, 2001
Filing Date:
May 19, 2000
Export Citation:
Assignee:
KAO CORP
International Classes:
B03D1/02; C09K3/00; (IPC1-7): B03D1/02; C09K3/00
Attorney, Agent or Firm:
Kaoru Furuya (4 outside)