Perhaps a hammer mill might be a better second stage unit if you want to
reduce the chip size. I have a Papec unit, runs off a belt drive on an old H
tractor that I used to mill grain. It comes with different size screens so
that
you can get just about any size you need. This equipment would all be
available at farm auctions, probably for very reasonable prices, as generally
it is
outmoded for farm use. Assume you are talking about a size somewhat larger
than sawdust. Sawdust, so far as I know is a readily available waste material,
used, again in agriculture, last time I heard, for cattle bedding.
Glenn Ellis
In a message dated 5/15/2004 1:54:32 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
Would you get a better result if your chip's were as fine as possible, would
it be worth it to run the chips through the chipper again?
Greg H.
----- Original Message -----
From: Walt Patrick
To: biofuel@yahoogroups.com
Sent: Friday, May 14, 2004 23:34
Subject: [biofuel] Wood chipper report
Long-term readers will recall that Windward's biofuel work is
focused on converting waste wood into methanol. One of the critical steps
on that journey involves the need to convert forest cullings into a
standardized feedstock.
Late last fall we purchased a PTO mounted chipper for $1950 from
Tractors-Etc
83969 N Pacific Hwy
Creswell OR 97426
Telephone: 541-895-2550, Fax: 541-895-2756
[EMAIL PROTECTED]
Here's a url for the importer
http://www.chinadepot.com/woodchip.html
By the time we got it home and assembled, we barely got to chip
anything before snow settled in for the winter. Fast-forwarding five
months, a spring windstorm brought down a dead pine, and in the process of
cleaning that up we finally got a chance to try out the chipper generating
three 55 gallon drums of chips.
http://www.windward.org/notes/notes64/wdchip02.jpg
We've still haven't gotten the feed mechanism adjusted right yet,
but we're learning as we go and at this point I'm confident that it's going
to do good work for us.
Here's a picture of the chips we're getting.
http://www.windward.org/notes/notes64/wdchip01.jpg
The upshot is that we're very happy with this piece of gear.
Walt
http://www.windward.org/
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