Production of rare earth compounds

Details Production of rare earth compounds Production of rare earth compounds

1983-11-18

1985-02-05

Carter, Herbert T.

Chemistry of inorganic compounds

Rare earth compound

423419R, C01F 1700

Patent

active

044977859

ABSTRACT:
A method for preparing high-density particles of rare earth carbonate comprises precipitating rare earth ions with aqueous carbonate or bicarbonate ions, in the presence of rare earth carbonate crystals, and separating the resulting precipitate. The method can be conducted to prepare individual batches or, alternatively, a continuous precipitation method can be used, wherein rare earth and carbonate or bicarbonate ions are mixed at a controlled rate to maintain an optimum pH condition. High-density rare earth oxide is obtained by calcining the precipitate.

REFERENCES:
patent: 3401008 (1968-09-01), Head
patent: 3446574 (1969-05-01), Head
patent: 3573886 (1971-04-01), Geotzinger et al.
patent: 3692671 (1972-09-01), Recht et al.
M. W. Woyski and R. E. Harris, "The Rare Earths and Rare-Earth Compounds," in I. M. Kolthoff and P. J. Elving (Eds.), Treatise on Analytical Chemistry, Part II, vol. 8, John Wiley & Sons, Inc., New York, 1963, p. 16.

Affiliated with

Also associated with

Rating

Production of rare earth compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of rare earth compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of rare earth compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2082386