This small guide will require you to set up 3 smelteries for all your automation needs.
Step one:
Set up 3 additional smelteries for the 9 ores you're getting, each one for 3 of them. Each smeltery will have one controller, one tank for lava and any number of faucets to drain the molten metal from.
Step two:
Link up your chest to the smeltery controllers with itemducts. Use a pneumatic servo on the pipes that feed into each controller and whitelist all the small ores of 3 different metals that don't mix.
For example:
Nickel, Aluminum, Tin
Iron, Copper, Silver
Lead, Gold, Platinum
Step three:
For each smeltery, connect the faucets together with liquiducts and lead the metal into 3 basins or tables with ingot casts. You can use pneumatic servos to only allow one molten metal into each basin or table, this will require a bucket of molten metal which takes about 7 ingots.
Extra step:
You can reclaim your ingots by putting the metal from the bucket into any tank and pumping it into a casting basin/table with liquiducts.
This way you can get all 7 ingots back if you also pour in the remaining 8 millibuckets that are left in the smeltery.
Step four:
Set up itemducts to pump the ingots or blocks of metal out of the casting basins/tables and into barrels. You might want to already put an ingot or block in each barrel to make sure don't get two barrels full of iron ingots without any space for your precious copper.
Step five:
Test away to see if all works well, maybe set up barrels for the other outputs like coal and redstone and whatnot. Also make sure the smelteries are tall enough to accommodate all the small ores and don't forget to hook up your smelteries to a supply of lava because they will go through it pretty quickly.
I hope this helped.