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Will glass marbles cause static electricity when used in a ball mill to grind black powder? Answered

Will glass marbles cause static electricity when used in a ball mill to grind black powder? it's for a homemade ball mill.

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binder113 (author)2014-08-29

significant static electricity is generated when rubbing two dissimilar materials together if they are far apart on the triboelectric series:

http://en.wikipedia.org/wiki/Triboelectric_effect

the list shows that glass is on the positive side, so any material far on the negative side such as ebonite or gold will cause charge seperation and static electricity.

Glass rollers can be used in vandergraph generators to build a massive charge.

I assume this mill is home made, and an immediate concern is if you are using a PVC container for the marbles. Charge build up is likely to accumulate between these materials.

if the material being milled is conductive, no charge build up will occur

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nutsandbolts_64 (author)2010-06-28

Most definitely not! My friend used marbles to grind matches into dust! And he's not dead, nor is he in the hospital. So yeah, I guess it's pretty safe.

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Evilblaze (author)2009-04-14

Glass cause static electicity? No. Of course no. But it is better if you use lead, because it is much more heavier.

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5150tech (author)2009-04-13

I don't know if glass will generate a charge but other insulators do. a balloon is an insulator but it can generate and discharge electricity. I would proceed cautiously.

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lemonie (author)2009-04-13

I don't think so. But it's usually best to grind black powder damp then dry it out.

L

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fwjs28 (author)lemonie2009-04-13

same thoughts here, glass is an insulator, so it should'nt ....but to be safe moisten the black powder

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