Product Overview
The GZL Series Dry Roller Compactor adopts dry extrusion process technology. It compresses powdery materials with moisture content below 10% into sheets, which are then processed through crushing, granulating and screening to convert sheet‑shaped materials into qualified granular products. Dry roller compaction relies on external pressurization to force materials through the gap between two counter‑rotating rollers for compaction into sheets or spheres. During roller compaction, the bulk density of materials can be increased by 1.5‑3 times to achieve required particle strength.
Working Principle
Various dry powder materials are fed from the top of the equipment. After degassing and screw pre‑compression, materials are conveyed to the curved grooves of two rollers. The two rollers rotate at equal speed in opposite directions, nipping materials into grooves for forced compression. After passing through the compression zone, the pressure on materials gradually drops. Materials are naturally discharged under surface tension and gravity, then go into the crusher and granulator for crushing and trimming, followed by screening on the vibrating sieve. Qualified products are transported to the finished‑product silo or directly packed. Undersized powder is sent back to the raw‑material silo via the return‑feed device for secondary roller compaction. The extrusion force can be adjusted by the hydraulic system according to required particle strength. Sheet, strip, olive‑shaped, oblate‑spherical and pillow‑shaped products can be obtained by changing the groove pattern on roller surfaces.
Performance Features
• Materials are forcibly compacted and shaped by mechanical pressure without any additives, ensuring product purity.
• Direct granulation from dry powder with no subsequent drying required, facilitating connection and modification of existing production processes.
• High particle strength; bulk density improves more significantly than with other granulation methods.
• Wide adaptability to raw materials; particle strength can be freely adjusted for different materials.
• Compact structure, easy maintenance, simple operation, short process flow, low energy consumption, high efficiency and low failure rate.
• Reduces environmental pollution and powder waste, cuts packaging costs and improves product transport performance.
