animal feed pellet mill is different from wood pellet mill

from the out looking aspect. animal Feed pellet mill is thinner and smaller than wood pellet mill. Generally, the highest animal feed pellet mill is about one meter and only several hundred kilograms while the smallest wood pellet mill is more than two meters and about 5.6 tons. 
from the working principle aspect, small pellet mill and animal feed pellet mill works the same. They both work on vertical principle. However, for ring die design, there do exist differences. The biggest difference is that ring die pellet mill for making wood pellets adopts imperative feeding device. Besides, wood pellet mill adopts the centrifugal and high-efficient design. Its pressure is several times than the ordinary animal feed pellet mill.
Last, from the production aspect, wood pellet mill is nothing compared to animal feed pellet mill for its low production, heavy weight and high price.