Method for recovery of rare earths from fluorescent lamps

Details Method for recovery of rare earths from fluorescent lamps Method for recovery of rare earths from fluorescent lamps

2011-07-12

2011-07-12

Mayes, Melvin C (Department: 1732)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Rare earth metal

C423S263000

Reexamination Certificate

active

07976798

ABSTRACT:
Method for recovery of rare earths from fluorescent lamps. The method comprises six steps. •The individual process steps are: Mechanical separation of coarse components. •Separation of the halophosphate. •Extraction in acids of easily soluble rare-earth fluorescent substances (mainly Y, Eu-oxide) •Extraction in acids of rare-earth fluorescent substances which dissolve with difficulty (for example rare-earth phosphates) •Breakdown of the remaining components which contain rare earths (for example rare-earth-aluminates) •Final treatment.

REFERENCES:
patent: 5567403 (1996-10-01), Kimura et al.
patent: 34 10989 (1984-03-01), None
patent: 246 551 (1987-06-01), None
patent: 246551 (1987-06-01), None
patent: 196 17 942 (1997-06-01), None
patent: 19617942 (1997-06-01), None
patent: 199 18 793 (1999-04-01), None
patent: 0 157 249 (1985-10-01), None
patent: 0 157 249 (1985-10-01), None
patent: 157249 (1985-10-01), None
patent: 11029312 (1999-02-01), None
patent: 11071111 (1999-03-01), None

Affiliated with

Also associated with

Rating

Method for recovery of rare earths from fluorescent lamps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for recovery of rare earths from fluorescent lamps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovery of rare earths from fluorescent lamps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2651313