ASTM for volatiles testing would be; in a preheated vessel, 900°C, dwell time 7 minutes only...
The guy , making the charcoal japanese style, was clearly not knowing his job...
That kiln only produced about 250 kg in 15 days.... (not per day, but in one batch only)
So, for making it myself easy:
I call input minus output result: all volatiles minus the measured moister (this to compare future wise all other materials)
Next batch testing will be up to 1200°C , to make it challenging...
Question to the readers of this:
Why there is so little loss ? Why not all charcoal turned into gas ?
This is the reason for testing this, for the purpose and the build of good gasifiers...
From the test series with 14% loss, 15 samples are sent to a pharmaceutical lab for analysis
edit: forgot the first serie of tests:
Input material pre burned on minimum 650°C
4 different samples
each sample 2 times 500 grs
ramp up time to 1000°C : 3 hours
soaking time at 1000°C : 1 hour
Protection gas: Argon
average weight loss, inclusive moister: also only 14%
So, why no difference in loss between dwell time 1 hour or 3 hours ?