That... Is a surprisingly easy request, honestly.
Well, there's a couple of things you'll want to do. First, you have to decide how big of an issue you have with space. I ask you that because with RP2, there's basically two ways you can sort items, and that's by using Filters and Sorting Machines. If you use Filters, you'll need a filter at the end of each tube, telling it what to accept, and you're limited to specifying 9 blocks per filter. If you use a sorting machine, however, you can do some fun stuff with painted tubes, but sorting machines take energy to run, so you'll need to dedicate at least a little bit of space to Blutricity production to feed your Sorting Machines.
The most simplistic design you can make takes two sorting machines, and a couple of retrievers. You hook up an input chest, with a sorting machine next to it, and you configure the sorting machine to pull items from the input chest, and eject them into the tube network. Let's say you paint all your ores you want macerated blue. You'd then use a blue paint brush to paint the tube going into the rotary macerator as blue, and all items ejected by the sorting machine that are painted blue are going to be pushed straight into the rotary macerator. Nice. Next, you'll want a retriever hooked up to your rotary macerator, pulling out the dusts that are now ready to be smelted, and dumping them into a separate tube network that feeds into the induction furnace. Hooked to the induction furnace, you can either use a retriever and then a buffer chest and a sorting machine, or you (i think) can hook up the sorting machine directly to the induction furnace. In any case, you'll want to color your ores according to how you want them to be sorted.
That's it, you're done. Any ores that you told your sorting machine to deal with are going to be macerated, smelted, and sent to their proper places. Now, there are more efficient and elegant ways of doing this, but this is at least simple and straightforward.
