I made a Super refinery that produces 32 (blue) lanes of plate. So far, I have the actual refinery and the train station for feeding it ore. I cobbled it together from several blueprints that aren't my own, with a few tweeks:
Station with balanced unloader: https://factorioprints.com/view/-KjELJNoIpt6pewqi-Fz
Compact 32 belt balancer: https://redd.it/6eytmi
4 lane smelting plant: https://factorioprints.com/view/-KkH4d9AFPh4AqjEChpR