On 28/06/2015 13:45, GB wrote:
On 28/06/2015 13:36, Harry Bloomfield wrote:
dennis@home a écrit :
http://www.bbc.co.uk/news/world-asia-33302243

I would think everyone should know that corn flour is explosive.

Most (all?) powders will combust, if the particle size and oxygen levels
are correct. Ignition source need only be static.


Not all. Only those that can be oxidised. So, iron filings will combust
(in the right conditions), but not rust (which is iron oxide), no matter
how finely you powder it.

However, there are lots of things that you don't normally think of as
combustible that can be oxidised in the right conditions. Have there
been any flour mill explosions in living memory?



Yes.
Here is a couple and some older ones.
Tens of people killed too.

http://www.brighthub.com/education/h...es/122532.aspx