D. Sun et al., SEPARATION AND RECOVERY OF NICKEL AND MOLYBDENUM USING CONTINUOUS ROTATING ANNULAR CHROMATOGRAPHY, Separation science and technology, 29(7), 1994, pp. 831-843
A continuous rotating annular chromatograph was developed for preparat
ive separation of nickel and molybdenum. Dowex 50W-8X cation resin (hy
drogen form) was packed in a 505-mm long and 10-mm wide stationary ann
ular column. The feed solution was continuously introduced at the top
of the bed by a rotating feed nozzle and was carried down through the
annular column with an eluent of 10% sulfuric acid. The products were
collected by a rotational tray rotating at the same speed as the feed
nozzle. To evaluate the performance of this device, the effect of feed
flow mte and rotational speed of feed nozzle were measured. Experimen
tal results were compared with results calculated using model-plate th
eory. It was found that the optimum feed flow rate, at a constant elue
nt flow rate of 48.8 mL/min and a rotational speed of 4.5 degree/min,
was 3.5 mL/min.