swim is curious about this method too, there seems to be a shortage of trials with actual yields posted... like for impure ketone (peracid/oxone/wacker) and foronce-distilled ketone. props to hellman for reading Vogel's, but hellski can go suck a fat dick. and hellman's yields (20g from 60g red ketone) are quite unappealing.
swim added 1.5ml ~= 1.2g acetone (58g/mol) to 1g NaI (150g/mol) (should be a slight excess of acetone if it really bonds 3:1) at room temp, then put in on an ice bath. completely crystallizes in 1h. yielded 1.3g, not quite right.
slowly decomposes at room temp releasing iodine (turns paper black).
swim supposes it should come out right with enough acetone to balance that lost by evaporation as Osmium posted a ref confirming MEK + NaI in 3:1 ratio.
swim really wants DATA, as vac distilling ketone at 180C tends to burn half of it... oh, and if you do try it, do like hellman says and add the NaI before heating, adding it to 200C ketone is a good way to liberate iodine gas.