It would be nice if a compressor could be added ontop to auto give compressed air with a ejector upgrade?
I tried this with the build I'm using (#645), and it seems to work (idk whether it worked in the build that first introduced the blast furnace), except that the refined iron ingots can end up in the compressor's input - I checked the compressor recipes via NEI, and apparently the compressor can convert 9 refined iron ingots into a refined iron block, which seems redundant since I can do that at a crafting table for 0 EU cost, but if I make just over 2 stacks of empty cells, I should be able to leave a few in the compressor's input thereby preventing it from accepting refined iron ingots ejected from the blast furnace.
Chocohead crafteric2 as of build 645, the ash from the solid heat generator hasn't been added to the default recycler blacklist, so putting it in a recycler might be slightly better than throwing it onto a cactus or into lava.