Is there a specific ammount of time for biochar made from metal to completely cool?

[Bola Bada]

Please I need information regarding this subject,

[Nando Breiter]

Biochar isn't made from metal, since metal is not biomass. 

But if you are asking in general how long biochar needs to cool so that it does not ignite when exposed to open air, it would depend on the size of the batch. The important thing is to NOT store freshly made biochar in anything that can be damaged if it catches fire. Don't put it in a vehicle, or a barn or a building, for instance. Keep it out in the open after it has been made and allow it to stabilize.

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On Fri, Nov 13, 2015 at 1:31 PM, Bola Bada <badasc...@gmail.com> wrote:

Please I need information regarding this subject,

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