You have forgotten many zeros.

If you produce a few grams of a precious metal, that cannot justify the trip until there.

To produce something of the order of one ton, which still seems too low to cover the expenses, you need to process something of the order of one million tons of iron.

With your estimation that could take several years.

In reality the energy consumption would be much greater, because one must cut chunks of iron and transport them to the vaporization installation, then also transport elsewhere the condensed iron.

So you would need a decent number of submarine like reactors in order to achieve an acceptable productivity.

There is no doubt that it would be feasible, but the problem is that at the current prices there would be no way to recover the expenses.