Race taylor

I have updated my profile I'm at Perryville Missouri https://en.m.wikipedia.org/wiki/Flux_(metallurgy) this is where it said lime as a flux

Ok to start I'm Race I just started with forging. a little back ground to my question. I was looking up information about flux and on it one of the items it listed was lime. the question I have is about lime. What kind of lime and I know it's not the fruit? The reason I ask this is because I know there is lime for farming, also for tanning and so on. so to further my question. What kind of lime and where would I get that from and how exactly would it be used in the forging process? And I also realize not everything is grammatically correct. Thank you for the time and help.