I wanted a mod to do this and couldn't find one so I made one.
You also can use this in your modpacks.
Put coal in the bottom and a block of copper in the top then wait a bit and you got a full oxidized copper block.
This mod will provide an easy/lazy way to oxidize you copper instead of letting it sit out in the open for hours and needing to move it every so often.
Look in images for the crafting recipe
