>Mark,
>You'd be the best to answer this, wasn't calcium carbide a byproduct of
something else, and used to produce commercial acetylene gas quantities? What
is the current practice to get the gas?
>john Lyles
No, calcium carbide was never a byproduct. It was, from the late
1800s, and still is, produced by reacting calcium carbonate and coke in
electric furnaces. Its major use is still for making acetylene, but where
petroleum and natural gas are plentiful, most acetylene today is derived
from those instead. The Wikipedia article "calcium carbide" explains it.
--Donald
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