Apart from the moisture content and particle size of raw materials, the temperature of biomass material is another important factor that would influence the process of briquetting. The post will talk about the influence of the temperature of materials for your reference.
By varying the temperature of biomass materials, the briquette density, briquette crushing strength and moisture stability can be varied. In a screw extruder, the temperature does not remain constant in the axial direction of the press but gradually increases. Internal and external friction causes local heating and the material develops self-bonding properties at elevated temperatures. It can also be assumed that the moisture present in the material forms steam under high pressure conditions which then hydrolyses the chemically lose and lignin portions of biomass into lower molecular carbohydrates, lignin products, sugar polymers and other derivatives. These products, when subjected to heat and pressure in the die, act as adhesive binders and provide a bonding effect “in situ”. The addition of heat also relaxes the inherent fibers in biomass and apparently softens its structure, thereby reducing their resistance to which in turn results in decreased specific power consumption and a corresponding increase in production rate and reduction in wear of the contact parts. However, the temperature should not be increased beyond the decomposition temperature of biomass which is around 300°C.
When producing biomass briquettes with briquette machine, we need to control the temperature of materials well so as to improve the briquetting quality and the working efficiency of the briquette machine.
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KMEC is one of the earliest and largest biomass briquette press manufacturer that provide our customers with qualified products, competitive biomass briquette price, and superior service. If you need biomass briquetting press, please feel free to contact us.
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