Thanks @MauveCloud ! Do you think we can solve it by installing an other mods who have those machines ? if there's one ..
Probably, at least as substitutes until CJ implements the machines in Railcraft. Progressive Automation might be a decent substitute for the feed station, or you could try Easy Breeding. iirc, the current 1.10.2 build of Railcraft allows furnacing iron nuggets to steel nuggets, so the blast furnace isn't strictly necessary. If you really want a multiblock for it, I imagine Immersive Engineering might have one (I haven't tried that mod myself, though).
If 1.7.10 is still supported, I just found a bug/crash: https://pastebin.com/j0uSSdzN I was right clicking a coke oven with minecraft shears and it moved around my inventory and copied my shears, after trying to move stuff in my inventory it crashed, also the GUI never opened for the coke oven and upon restarting of my modpack and reopening that world I have found I have now lost my shears.