There are lots of different materials which can be compressed into fuel pellets. We get a lot of questions about processing waste materials, and while most of them can be used in the pellet mill the end product may not produce in terms of a fuel an ideal product. A definite exception to this rule would be horse manure/bedding waste. Another similar example would be chicken manure/bedding waste. For the owners the disposal costs of this material can be significant therefore making use of the material is an opportunity to turn a cost into a profit. Typically the base bedding material will be straw, hay, shavings or in some cases actually wood pellet bedding. Once the horse manure and bedding is ready for disposal before it can be used for pellet production it needs to be dried. The video above is of an impressive drying system developed by LEI Products that uses their Bio Burner to generate hot water which can then be used to dry the horse manure. Typically the manure will be at a moisture content around 40% and will need to be dried down below 15% ready for the pellet press. This drying system uses two large augers. At the end of the first auger the material enters a hammer mill with a large screen. This is designed to reduce the particles down so that more effective drying can take place. After the second auger and drying has been completed the material can then run through a fine hammer mill screen of 5mm ready for the pellet mill. You may think why not do this to start with as a smaller particle size will dry quicker. The reason is trying to hammer mill wet material through a 5mm screen the only thing that will happen is a blockage of the hammer mill. Now that the horse manure is dry and in small particles it can be compressed into 6mm or 8mm pellets for stoves and boilers. Horse manure pellets produce a high BTU, low ash and low emission fuel and therefore hold a lot of potential as a locally produced fuel. Thanks for reading and please comment below.