[Stoves] Meat grinder fuels for TLUDs was Re: wheat husk pellets

[ajheggie at gmail.com]

[Default] On Wed, 12 Jun 2013 12:53:02 +0700,Paul Olivier
<paul.olivier at esrla.com> wrote:

>How does lignin soften to become a binding agent using a meat grinder?
>This would be truly wonderful, if it were true.

It won't with a meat grinder, you will need some sort of binder, like
boiled starch or clay.

Lignin plastisises under high pressure and heat, the heat is normally
derived from the friction of the material passing through the die. At
these pressures the cell walls collapse and then the lignin re sets to
form a pellet that is denser than the wood it was made from. All these
systems use a lot of power and the expensive dies wear.

The Shimada press is the one that produces a hexagonal log with a hole
down the middle, often blackened on the outside from the heat from the
press walls. 

Similarly rotary die extruders  use pinch rollers to punch small
amounts of feed through the holes.


Have a look at:

http://www.fao.org/docrep/x5738e/x5738e0j.htm


AJH