Double Roller Extrusion Granulator

Double roller extrusion granulator is the key equipment of compound fertilizer granulation. This machine features advanced technology, reasonable design, compact structure, novel and practical, less energy consumption. And it can be fitted with corresponding equipment and supports small production line, thus forming certain capacity continuity & mechanical production.

Using superb formula, without drying, normal temperature production, and rolling forming at a time. All the above advantages make the products conform to the technical requirements of compound fertilizer. It is applicable to produce various compound fertilizer in high, medium and low concentration. And it is renewal product of energy saving in compound fertilizer industry.

For this series of granulators, the ball sockets on the roller skin can be customized according to user’s requirements. There are a wide range of options for ball shapes including pillow shape, semi-circle shape, rod shape, tablet & pillow shape, walnut shape, flat ball and square bar shape.

• Performance characteristics

1. Small investment, quick returns. Double roller extrusion granulator doesn’t need drying, working at normal temperature, rolling to balls at one time with good economic returns.
2. Stable operation and low cost. Double roller extrusion granulator performs reliably with low power, without three waste discharge. And it features stable operation and easy maintenance.
3. Double roller extrusion granulator is sutable to a wide range of material source including compound fertilizer, medicine drugs, chemical industry, fodder, coal, metallurgy and so on.
4. It fills the domestic blank and is industry-leading. Double roller extrusion granulator is used in the granulation of rare earth, ammounium bicarbonate fertilizer, filling a domestic gap in this field.

• Working principles

The double roller extrusion granulators for this series belong to extrusion slip model. Its working principle is as follows: the main motor drives belt and belt pulley and transmits to the driving shaft by reduction gears, then the split gears on the driving shaft engage with the driven shaft, working in opposite direction. The materials are added from the feed hopper, and mould through double crusher, then demoulding & pelleting. Through a pair of chain, the materials are sent to crushing & screening room, and become balls. Then the return materials are mixed with new materials and start granulating again. With the continuous rotation of electric motor and unceasing input of materials, it can achieve mass production.