As an environmentally friendly energy source, biomass pellets have been favored in recent years. According to market statistics, the demand for biomass pellet machines has also increased year by year, and the requirements for biomass pellet machine molding have become higher and higher, and the molding standards of biomass pellet machines have also become higher and higher. In the production process of biomass pellets, the molding quality is directly related to the subsequent use effect. There are many factors that affect it, which can be mainly summarized into three categories: raw material characteristics, process parameters, and equipment conditions.

Raw material characteristics are the basic factors affecting the molding of biomass pellets. Different types of raw materials have significantly different chemical compositions and physical properties. For example, the differences in lignin content and fiber structure of wood raw materials and herbal raw materials will directly affect the difficulty of molding and the quality of particles. The particle size of the raw materials is also critical. The appropriate particle size can ensure that the materials are arranged closely during the compression process. Particles that are too large or too small are not conducive to molding. In addition, the moisture content of the raw materials needs to be strictly controlled within a certain range, generally around 15%. Too high or too low will lead to molding difficulties.

Process parameters and equipment conditions also have an important impact on the molding of biomass pellet machines. In terms of technology, molding pressure, temperature, pressing method, molding process, and the residence time of materials during the molding process all play a key role in pellet molding. Appropriate pressure and temperature can soften and plasticize lignin and promote particle bonding; different pressing methods and molding processes will bring different molding effects. In terms of equipment, the shape and size of the molding mold determine the appearance of the pellets and also affect its internal structure. If the equipment is aged or fails, it will also lead to unstable pellet molding. Only by fully considering and optimizing these factors can we produce high-quality biomass pellets and improve the economic benefits of the enterprise!