I just noticed that in 1.10, JEI says you can now put steel ( formerly refined iron ) into the macerator and get back iron dust, which can of course be refined back into steel again. This creates an infinite cycle where you can keep recycling iron -> steel -> iron, and get slag each time you do, which centrikfruges into a tiny gold dust and 6 coal dust. While this is a time and energy intensive process, and there are other similar processes ( cobble gen and railcraft crusher -> rare diamond ), I thought it was worth mentioning as a possible oops. Given the time and energy required, it might be ok, but then again, it might be an oversight.
Gold/coal dust dup bug?
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The Slag should only happen if you use the Blast Furnace on purified Iron Ore, in my opinion. That way Slag gets preserved and is used in Iron Ore Processing.
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The other option would be, to make refining iron cost coal again.
But yeah, slag being given from crushed/purified/normal ore is the best way I think. -
i mean coal & gold are only usefull in early game... Its nothing else then scrap boxes...
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Sure but Scraboxes are intended, a Blast Furnace Loop looks very goofy if you ask me.
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It reminds me of those EMC exploits back in MC 1.2.5.
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It's only a really weak EMC loop, you gain a small amount of gold and coal dust for all the power investment to power the blast furnace, macerator, compressor and thermal centrifuge. The Railcraft method could end up working out cheaper depending how lucky you are.