Tips for Using a Small Sawdust Brick Press Machine

Jan 23, 2026

When using a small sawdust briquette machine to compress sawdust, the core of parameter control is achieving a synergistic adaptation of "high pressure + high temperature." The combination of pressure, temperature, and rotation speed is adjusted according to the fiber content and moisture content of the sawdust to ensure sufficient softening and binding of lignin, while avoiding equipment overload.

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Pressure parameters are crucial for molding.

The pressure adjustment range for a small biomass briquette making machine is 10-25 MPa, with different values corresponding to different machine models and sawdust characteristics: For flat-mode models compressing ordinary sawdust (fiber content above 50%), a pressure of 10-15 MPa is sufficient; for hydraulic models compressing low-fiber sawdust (such as sawdust mixed with straw), the pressure needs to be increased to 18-25 MPa to ensure dense briquettes. If the briquettes are loose and easily broken during operation, it indicates insufficient pressure. The pressure can be finely increased by adjusting the hydraulic valve or the screw shaft clearance. If the equipment overheats severely or makes obvious abnormal noises, the pressure should be appropriately reduced to avoid overloading and damaging components.

Temperature parameters must match the pressure and sawdust moisture content, with a typical range of 160-200℃. Small biomass briquette press machines with built-in heating devices allow direct temperature setting via the temperature control panel: when sawdust moisture content is high, adjust the temperature to 180-200℃ to accelerate moisture evaporation and improve binding properties; when moisture content is low, control the temperature at 160-180℃ to prevent lignin carbonization. Models without heating devices rely on friction during extrusion to generate heat; temperature adjustment is achieved through the feed speed. Faster feed speeds result in more intense friction and higher temperatures; a balance must be struck between feed speed and production capacity to avoid excessively high or low temperatures.

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Rotation speed affects compression uniformity and production capacity.

For small biomass briquette machines, the pressure roller (or auger) speed should be controlled at 50-150 rpm, with the cutter speed synchronized with the forming speed. When compressing fine wood chips, adjust the rotation speed to 80-150 r/min to improve feeding and forming efficiency; when compressing coarse wood chips (approximately 8 mm), reduce the rotation speed to 50-80 r/min to extend the residence time of the material in the forming chamber and ensure sufficient compression. The cutter speed needs to be finely adjusted according to the forming speed, generally 5-10 r/min faster than the forming speed to avoid inconsistent briquette lengths.

Parameter control should follow the principle of "small-scale optimization." Before batch compression, take a small amount of wood chips for trial production, observe the briquette density and strength, and gradually adjust the parameter combination to determine the optimal solution. Simultaneously, considering the characteristics of small wood chip briquetting machines, avoid frequent parameter fluctuations to ensure stable equipment operation and improve compression efficiency and finished product qualification rate.