Iron is the ore used to make steel, it is not two ingredients, but two steps. The energy for this conversion comes from 170 t of coking coal.

At 11.5MJ/t to mine the iron ore, it takes 3450 MJ to mine the ore. Thats 0.5 hours of windmil generation.

Coal is probably similar.

The coking coal is produced from metallurgical coal. 1.5 to make 1 t of coke. Some energy is lost in the conversion. That would make the windmill an extra 33% more time to recover.

The issue of matching demand is more significant. The wind doesn't always blow when you need to power, but in terms of return on energy invested it's a pretty short payback