Steel mill

[Dron__]

idea based on post Brambor, Combined ore patches
viewtopic.php?f=6&t=55884

1

copperferrite.png (1.3 MiB) Viewed 1335 times

I suggest adding a metallurgical plant for the separation of metals
principle of operation like oil refinery

Steel mill.png (56.3 KiB) Viewed 1335 times

p.s it is necessary to specify (create) the parameter, content of impurities in %

impurity content.png (480.79 KiB) Viewed 1308 times

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Alternative way to produce sulfuric acid
there are times when there is not enough sulfuric acid, so I suggest adding a mineral, Pyrite or Greigite
https://en.wikipedia.org/wiki/Pyrite
https://en.wikipedia.org/wiki/Greigite
Minerals used to produce sulfuric acid

sulfuric acid production.png (26.25 KiB) Viewed 1335 times

[olafthecat]

Would be more realistic, but would add diificulty

[Lubricus]

Angels mod's do something similar and more complex and involved it's great and fun if you think vanilla is to simple.
https://mods.factorio.com/mods/Arch666A ... lsrefining
I wouldn't be against to ad something similar but simplified to the base game.