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| Switchgrass growing at Tom Lee’s Farm |
Demonstration site -Tom Lee’s farm, Madrid |
Baled switchgrass prior to densification
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Switchgrass is first hammer-milled
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Hammermilled switchgrass prior
to pelleting
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Briquetting machine runs off tractor PTO
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Tom Lee explains controls
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Tom Lee demonstrates BHS grass
briquetting machine
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Tom Lee points to cooling
densified briquette
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Briquettes emerge after
cooling – two cooling guides |

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Briquette emerging from die, cooling guide removed
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Auger moves feedstock to be compressed by piston in die
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Reciprocating piston forces feedstock through die |
Briquette breaks off after
cooling |
Cyclone separates large
material from dust |
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Bucket of finished switchgrass
briquettes
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Finished briquette
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