Tub grinders

Reel chop from the field can come in 1" to 4" lengths with bulk densities of 2 to 4 Lb/CP (32-64 Kg/ia ). For straws we found Japanese feed markets required 2" to 3" lengths (3 Lb/CP, 10 HP Hr/Ton) but domestic feed, fuel and fiber products could be made using a 3/8" screen (5 Lb/CP - 20 HP/Ton/Hr). Hammermills are better than shredders. Tub grinders have low efficiency and are best for mixing. Cornstalks, husks and leaves can be cubed readily using a 3/4"-1 " screen. 

Wood grinders arc used to shred large pieces of wood (e.g., yard wastes, construction debris, palettes) into chips. Tub grinders are the most commonly used equipment, but horizontal flail mills can be used as well. 

Vermeer, Tub Grinder Model TG525A , Brochure TG525A, website http //www. vermeer.com/Environmcntal Equipment/Tub grindcrs/TG525. 

Figure 5.8. Feeding a Round Bale to the Tub Grinder at Plant Gadsden...

---