Compost made from livestock manure is an effective material for improving the physical
and chemical condition of soil. However, there are two factors that limit the application of ordinary
composted livestock manure. The first problem is that composted livestock manure usually
has a high moisture content and a high volume per unit of weight. As a result, it is difficult
and costly to transport. The second problem is that the quality of the compost and its nutrient
content are not constant. This also limits the efficient use of compost. The molding technology
used for composted livestock manure is an effective solution to both problems. A pelleting machine
is used to make composted livestock manure into pellets 5 mm in diameter. If this is to
be done without adding any other materials, it is important to control the moisture content of
the compost and the rate at which the compost is supplied to the die part of the pelleting machine.
The dried pellets retain their form during storage and distribution, and have a volume
only 60-90% of the raw compost. When the pellets are scattered, they generate only one-tenth
or less of the dust generated by ordinary compost.