Japan independently started the production of sawdust briquettes in the year 1925. They used to call it “Ogalite”. But it is considered as the people in Nepal had started preparing and utilizing biomass briquettes before it is recorded in the history. Between the years of 1964-1969 the production of briquetting in Japan increased fourfold. Fuel briquettes emerged as a business in the latest 20th century. Till 1950’s economic methods were used to develop briquettes in a binder-less production method.
The industrial method of preparing the briquetting started from the second half of 19th century. The use of various type of briquetting was considered common in the years of world war I and world war II. The charcoal briquette was first invented in Pennsylvania in the 1897. This process of preparing the briquettes was further admired and advanced by Henry Ford who produced wood and sawdust briquettes. During the world war II, many European countries made their own household briquettes by utilizing waste paper and other combustible waste available in nature.
Today’s world uses many type of briquetting machine, which are complex models. These machines have various special parts for crushing, compressing and drying the briquettes. These briquettes we prepared from simple compressing briquetting technique. The sawdust briquetting produced without any kind of binder for the binding process eliminates any kind of unpleasant odor during combustion.
According to the FAO, briquetting is classified into 6 types depending on the equipment used:
- Piston presses
- Screw presses
- Roller press
- Manual presses
- Low pressure briquetting
Briquetting is used in various industrial purposes for production of heat, electricity generation and even considered as a substitute to non renewable sources of energy for fuel.