>Thank you for the info.
>Based on the little bit of info I have, my
>intention was to simply leave some lump
>quicklime exposed to the air for a while and see
>what properties it has. I hope to make a trip
>to the kilns this spring.

why would you want to do that?
why not simply add water (slake it) screen it and use?
if your quicklime is pure and clean you can even use it on the same day - they still do that way in Romania...