Im asking this question because in another NG someone has said you should not use glass balls in a ball mill (Pyrotechnic manufacture ball mill) because the glass could spark and ingnite the pyrotechnic mixture being milled. I have never heard of soda lime or boro sparking before. It sounded suspect to me.
Thanks Matt
What does Lloyd reckon ? He's the man who'd know.
Yes, glass will hold static electricity. The two most obvious examples are 1) using a fur to stroke a glass rod and then touching the rod to something and getting a spark - this was the original demonstration of static electricity. 2) The disks in a rotating disk static lightning machine are glass (with metal take-off lines). Whether glass in the ball mill will cause problems will depend on what else is going on (powder, other insulators, dampness and conduction) but the risk seems reasonably high.
Doh, My brain was half asleep. To much work and up to late. I forgot to even consider electric discharge. I was stuck thinking about sparks produced when something is ground such as metal. Matt
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