Co2 tank water when firefighters from aluminum. Although the flame goes out. But the heat is still molten aluminum. When exposed to fuel, it could cause a fire stick to it.
When using a CO2 tank, fire water, aluminum, although the flame will extinguish but the accumulated heat melting aluminum also. When the touch is the fuel, it could cause a fire ignited caught up again.
When you use a bucket of water aluminum CO 2 fire even though the flame goes out, but the heat accumulated in aluminum melting is also when you touch is fuel, it may cause fire, and stuck up again.