Saw Dust Burner

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restorer

New Member
Aug 16, 2006
831
Salt Lake City, Utah
Spent an hour cleaning the dust collector, and cyclone box from the shop. Mostly table saw dust and plane shavings. Bagged and stacked. Turned the News on and watched a segment on "Chop-Zilla" and hammer grinder recycling 240,000 lbs. of Christmas trees. My puny five bags are nothing, but I got to thinking, I would rather burn, than toss in the landfill, apparently 70% of our landfill is potentially recyclable organics.

Several years ago a fellow woodworker was heating his shop with the ugliest box stove I have ever seen. Besides the flu the only visiable access to the stove was a door on top and a slide vent on the side. He would take a gallon scoop of his sawdust about every hour or so and dump it in the hopper. It produced amazing heat. I asked him then where he got it and he replied he used to distribute them, but the manufacturer went out of business. As I remember it was 1/4 inch steel, wrapped and welded. He said it culd be stoked over night. He explained it had a blower you could use, but he didn't like it, did not install. Had a pan underneath for ashes, I don't really know how he accessed the burn chamber to light.

OK, now I would like to know if there is any small stove, heater, furnace that burns sawdust????? I have seen the Hern Iron site and like their concept, but have never seen anything like their stove in use. All other sawdust burners are HUGE. My thinking is I can use my dust and some from a few cabinet shops to heat my place, if I had a stove like this. The shavings/dust would be free, I would get the separated walnut, and mahogany that has to go to the landfill. Most everything else goes to bedding for horses, They have to pay by the ton for the privilege to dispose.

With the pellet for the home and the dust for the shop I might be able to get my heating under $400.00

BTW, his shop was a pre-stressed concrete box, no insulation and 18'ceiling, with a 16' X 12' roll up steel door and no insulation there either. Kept the place about 60-65 degrees in the worst of the winter.
 
UncleRich said:
They have to pay by the ton for the privilege to dispose.

.

HUH?

we sell ours to pellet mills by the truck load
 
mtarbert said:
Why is the walnut and mahogany seperated out?

Some woods are toxic to other plants, walnut is one and I can believe mahogany would also be, it the chips are used for compost your tomatoes may not grow. :) Also if the chips are used as bedding for horses some woods will be a problem.



I posted this before but it may have been on a different forum.
Don't know anything about these stoves or companies, just found them on the web.

http://www.bioenergyupdate.com/magazine/security/Bioenergy Update 07-01/Bioenergy Update 07-01.pdf

http://www.stovesonline.co.uk/wood_burning_stoves/Steel-workshop-stove.html

Could not find a commercial version of this one.
http://www.repp.org/discussiongroups/resources/gasification/drew/ww2stove.html

And this guy has been doing some interesting work with burning green chips.
http://www.sredmond.com/vthr_index.htm
 
Thanks, Andre B.: very interesting, about the green wood chip burner. It's nice to see that people are looking for new ways to burn low grade wood. Prviously, the only meathod I had heard of to use wood chips / saw dust for heating was in a Masonry heater.


To answer the original question, you could probably burn saw dust in a regular stove, if you damp it down some (to reduce the rate of burn). But you may end up melting your stove before you find jusdt the right way to do it.
 
Anton Smirnov said:
To answer the original question, you could probably burn saw dust in a regular stove, if you damp it down some (to reduce the rate of burn). But you may end up melting your stove before you find jusdt the right way to do it.

There are also some people working with using things like corn starch to make balls from sawdust and other things, a few inches in diameter. These do not require the large expensive machines that are needed to make the 20,000 psi plus pressures needed to make pellets. Kind of neat how they burn.

Some pics here of paper, wood charcoal, and swichgrass stuff.
http://www.velocity.net/~jeff0124/

Lots more info in this archive.
http://listserv.repp.org/pipermail/gasification_listserv.repp.org/
More archives.
http://listserv.repp.org/mailman/listinfo
 
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