Other Raw Materials
There are many more different kinds of raw materials. Typically paper and plastic based raw materials, as well as, peat. More raw materials will appear in the future due to the economics for disposal of waste. Most types of other raw materials can be briquetted; however, the preparation of the raw material is very important prior to briquetting.
You can read about other raw materials on the following pages. The site will continuously be updated with more information about other agricultural raw materials.
Paper includes a wide range of raw materials such as: Paper dust, adhesive paper, bank notes, old magazines, cardboard etc.
Generally, most raw materials are dry – with fairly low moisture, however, the structure and type of paper based waste varies very much, so it is important to test the raw material, as quality and capacity will vary from type to type. The process before briquetting normally includes shredding and hammer milling. The briquettes are mostly used for industrial boilers.
Peat (turf) is an accumulation of partially decayed vegetation or organic matter that is unique to natural areas called peatlands, bogs or mires. Peat is harvested as an important source of fuel in certain parts of the world; however, the raw material is most often regarded as fossil fuel.
There are special processes to harvest the peat and the raw material most often has moisture content between 30% and 40%. Often it needs to be dried prior to briquetting. However, we have been able to briquette the material with moisture levels above 30%. The briquettes are used both for industrial boilers and consumer logs.
RDF (Refuse-derived fuel) or SRF (solid recovered fuel / specified recovered fuel) is waste from households. SRF meets an international standard and is becoming a more interesting fuel. Governments are increasing fees for landfill, which makes the fuel interesting as it is considerably cheaper than other biomass.
SRF is a difficult raw material to handle and needs drying, sand removal and down-sizing prior to briquetting. It is recommended to mix the raw material with demolition wood prior to briquetting.
SRF briquettes are normally used for industrial fuel in large boilers for gasification.