The invention is directed to a machine for compacting agricultural fibrous matter into a board, comprising a hopper for receiving the agricultural fibrous matter; an extruder comprising an extrusion passage downstream of the hopper; and a ram configured for moving in a reciprocal manner along the extrusion passage; wherein the extrusion passage further comprises a movable wall configured for moving between a feed position, opening the extrusion passage to the hopper, and an extrusion position, closing the extrusion passage.

The present invention relates to improvements of equal channel angular extrusion (ECAE). It provides a preservation of billet shape, a simple billet ejection from tool, application of backpressure and minimizes or eliminates flashes and cracks during multi-pass processing. That way, ECAE can be performed at a large scale as a productive and cost effective industrial operation without billet reshaping and preheating between passes.

An efficient method and apparatus for making a compressed structural fiberboard from agricultural fibrous matter. The method and apparatus provides a conveyor having variable drives for carrying the agricultural fibrous matter; a hopper having variable drives for conditioning and delivering the agricultural fibrous matter to an extruder; the extruder having a cyclic ram with linear actuators and a floating plate to drive the cyclic ram between an extended position, wherein the agricultural fibrous matter is compacted into the compressed structural fiberboard, and a retracted position, wherein the agricultural fibrous matter is delivered to the extruder; synthetic oil heaters for heating the compressed structural fiberboard; a heat sink track cooler for cooling the compressed structural fiberboard; and a water jet cutting system for cutting the compressed structural fiberboard into individual boards.

A system for forming a woody biomass component and a binder component into a solid fuel element having a predetermined density. The system includes a first compression assembly for compressing an uncompressed mixture of the woody biomass component and the binder component to provide a first compressed mixture formed into a preliminary element having a preliminary density. The system also includes a second compression assembly for compressing the preliminary element to form the solid fuel element having the predetermined density, which is greater than the preliminary density.

An efficient method and apparatus for making a compressed structural fiberboard from agricultural fibrous matter. The method and apparatus provides a conveyor having variable drives for carrying the agricultural fibrous matter; a hopper having variable drives for conditioning and delivering the agricultural fibrous matter to an extruder; the extruder having a cyclic ram with linear actuators and a floating plate to drive the cyclic ram between an extended position, wherein the agricultural fibrous matter is compacted into the compressed structural fiberboard, and a retracted position, wherein the agricultural fibrous matter is delivered to the extruder; synthetic oil heaters for heating the compressed structural fiberboard; a heat sink track cooler for cooling the compressed structural fiberboard; and a water jet cutting system for cutting the compressed structural fiberboard into individual boards.

The invention is directed to a machine for compacting agricultural fibrous matter into a board, comprising a hopper for receiving the agricultural fibrous matter; an extruder comprising an extrusion passage downstream of the hopper; and a ram configured for moving in a reciprocal manner along the extrusion passage; wherein the extrusion passage further comprises a movable wall configured for moving between a feed position, opening the extrusion passage to the hopper, and an extrusion position, closing the extrusion passage.

A system for forming a woody biomass component and a binder component into a solid fuel element having a predetermined density. The system includes a first compression assembly for compressing an uncompressed mixture of the woody biomass component and the binder component to provide a first compressed mixture formed into a preliminary element having a preliminary density. The system also includes a second compression assembly for compressing the preliminary element to form the solid fuel element having the predetermined density, which is greater than the preliminary density.

An efficient method and apparatus for making a compressed structural fiberboard from agricultural fibrous matter. The method and apparatus provides a conveyor having variable drives for carrying the agricultural fibrous matter; a hopper having variable drives for conditioning and delivering the agricultural fibrous matter to an extruder; the extruder having a cyclic ram with linear actuators and a floating plate to drive the cyclic ram between an extended position, wherein the agricultural fibrous matter is compacted into the compressed structural fiberboard, and a retracted position, wherein the agricultural fibrous matter is delivered to the extruder; synthetic oil heaters for heating the compressed structural fiberboard; a heat sink track cooler for cooling the compressed structural fiberboard; and a water jet cutting system for cutting the compressed structural fiberboard into individual boards.

The invention is directed to a machine for compacting agricultural fibrous matter into a board, comprising a hopper for receiving the agricultural fibrous matter; a pre-compacting device comprising several rows of fingers configured for moving successively into, along and out of vertical slits formed in at least a wall of the hopper; an extruder comprising an extrusion passage downstream of the hopper; and a ram configured for moving in a reciprocal manner along the extrusion passage; wherein each row of fingers of the pre-compacting device is independent in speed.

A device produces pellets from pressed material, including a feeding apparatus for receiving pressed material, which is arranged in the region of a feeder screw, a pre-pressing chamber which can be fed by the feeder screw, a closable main pressing chamber having a main ram movable for compacting the content of the main pressing chamber, and an ejecting apparatus having a closing slide, and a cutting device for cutting the pressed material during or after entering the pre-pressing chamber, the device being designed to cut the pressed material supplied to the pre-pressing chamber via the feeder screw so as to provide cut pressed material in the pre-pressing chamber and/or main pressing chamber for the purpose of compaction.