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However, in the past, the IX resin has always been used as a fixed bed IX exchange process, where a bed of "spent" or saturated resin is periodically regenerated with an appropriate solvent.
To address this issue, three different rotors were designed by Company B staff for these experimental trials to determine the turbulence level needed to ensure an intimate contact between downflowing bitumen emulsion and saturated resin/waste solids particulates.