Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-01-31
1993-07-06
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041823, 204130, C25F 700
Patent
active
052250563
ABSTRACT:
A first metal, for example a transition metal such as cobalt, having an insoluble hydroxide is separated from a second metal such as lithium having a soluble hydroxide in an aqueous liquid containing dissolved cations of the metals. The cations are firstly absorbed onto a cation exchange material by electrochemical ion exchange and the second metal then selectively eluted by electrochemical ion exchange under sufficiently high pH conditions, e.g. to 10-13, in a closed loop. Finally, the transition metal is eluted by electrochemical ion exchange under sufficiently low pH conditions, e.g. acidic such as 1-2. The method is applicable to separating trace quantities of Co (e.g. as Co-60) from larger quantities of Li in aqueous solution.
REFERENCES:
patent: 3042597 (1962-07-01), Schumacher
patent: 3484188 (1969-12-01), Schneider
patent: 3533929 (1970-10-01), Evans
Bridger Nevill J.
Neville Mark D.
Turner Andrew D.
Hinds William R.
Niebling John
Phasge Arun S,.
United Kingdom Atomic Energy Authority
LandOfFree
Separation method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Separation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1687274