Monthly Archives: June 2009

Charcoal burn

Lighting the kiln.

[vodpod id=Groupvideo.2740869&w=425&h=350&fv=offsite%3Dtrue%26intl_lang%3Den-us%26photo_secret%3D607b9a70ea%26photo_id%3D3631991284]

The charcoal burn started at 5:50 am on Monday and I closed down the kiln to stop the burn just as the Angelus was ringing out at noon on Tuesday.  The second part of the video shows (not very well) flaring the exhaust gases which is also an indication that the burn is nearing completion.[vodpod id=Groupvideo.2715624&w=425&h=350&fv=offsite%3Dtrue%26intl_lang%3Den-us%26photo_secret%3D008061d00e%26photo_id%3D3616514382]

Much smoke was produced, mainly steam (approaching half a ton of it I reckon):

The shut down was possibly a little early at 36 hours burn, but not too bad

Here is the smoke going a dirty grey as the tar starts to burn away inside the kiln, the critical point is to stop the process before the charcoal starts burning, at which point the smoke turns blue.

Here’s the kiln with the chimneys removed and all air intakes blocked off (with socks filled with wet sand).

I set up a bench by the Landy, I carved two and a half spoons and a spatula while I was attending the burn so I could swap the chimneys round every 2 hours.  I closed down the intakes to about a third on the Monday night and then opened up again of Tuesday morning.  The result is very satisfying:

Charcoal!

Site #1

Site #1

Here is my lovely new charcoal kiln.  Freshly delivered to Bolton Abbey Estate Yard and levelled ready for sand sealing the base to the ground.

Site #2

Site #2

Here it is the next day, moved across the yard away from the trees, which would have interfered with the airflow.  It is fairly easy to move by rolling, but needs levers to jack it up onto the ports which act alternatively as flues or air intakes.  Notice the high tech airflow dampers – recycled bricks.  I had a tonne of sand delivered for sealing down – outside and inside:

I have an extension ring, but the first burn will just be with the bottom ring, which is still six foot round and four feet high.

Top ring in the distance

Top ring in the distance

It took two trailer loads to fill.  Using the old estae forestry trailer which is on its last legs so it ended up being two and a bit, as I dare not fill it too full as the floor looked very weak!

Forgot to take a picture of the floor set up to get the draught right and a fireplace in the center

Forgot to take a picture of the floor set up to get the draught right and a fireplace in the center

So here it is ready for lighting at 6am Monday:

Bet the trees across the river will be shivvering in their boots on Monday as the smoke drifts across.

Bet the trees across the river will be shivvering in their boots on Monday as the smoke drifts across.