Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1976-04-08
1977-09-20
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
23301, 23305A, 423121, 423629, C01F 706
Patent
active
040497739
ABSTRACT:
Aluminate mother liquor is passed countercurrent to the direction of feed of aluminum hydroxide crystals through at least two stages, each of which has a lower turbulent zone with a high suspension density and which is agitated under conditions which assure particle growth via crystal growth and an upper non-turbulent, stagnant liquid layer from which most crystals settle back into the respective lower turbulent zone. The suspension density in the stages is maintained at a constant level by sending crystal suspension from the lower turbulent zone in all the precipitation stages but the first to the preceding stage. Mother liquor is removed from the upper stagnant zone of all stages but the last stage and sent to the respective following stages. Coarse crystal suspension is removed from the turbulent zone of the first stage for separation of the crystals for further processing, while the mother liquor is returned to the system.
REFERENCES:
patent: 1943786 (1934-01-01), Cowles
patent: 2380804 (1945-07-01), Tiedemann
patent: 2653858 (1953-09-01), Brown
patent: 2707669 (1955-05-01), Houston et al.
patent: 3466142 (1969-09-01), Hambly
patent: 3486850 (1969-12-01), Day
patent: 3545923 (1970-12-01), Mercier et al.
patent: 3649184 (1972-03-01), Featherson
Kjolberg Sven Arne
Mejdell Glor Thorvald
Carter Herbert T.
Norsk Hydro a.s.
LandOfFree
Process for precipitation of aluminum hydroxide from aluminate s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for precipitation of aluminum hydroxide from aluminate s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for precipitation of aluminum hydroxide from aluminate s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-671524