Product category:
Materials processing and testing
News Release from: KR Komarek | Subject: DH500
Edited by the Engineeringtalk Editorial
Team on 28 June 2002
High-capacity briquetter forms larger
briquettes
A high-capacity roll press briquetter from KR Komarek produces briquettes sized from 76 x 51 x 32 to 152 x 127 x 76mm, at throughputs ranging from 30 to 50t/h.
A high-capacity roll press briquetter from KR Komarek produces briquettes sized from 3 x 2 x 1.25in (76 x 51 x 32mm) up to 6 x 5 x 3in (152 x 127 x 76mm), at throughputs ranging from 30 to 50t/h Model DH500 is intended to unitise large volumes of loose, granular material such as ores, oxides, chemicals, plastics, solid fuels, minerals and a variety of scrap materials, for easier handling or reclamation
This article was originally published on Engineeringtalk on 7 Jul 2003 at 8.00am (UK)
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Model DH500 offers roll sizes from 28 to 54in (71 to 137cm) in diameter, for optimal productivity depending on briquette size and density.
Symmetrical roll mounting -- in which each roll is suspended between two bearing blocks -- permits wider roll faces for the highest possible number of cavities and unit production capacity.
This type of mounting also lets the rolls skew to maintain more uniform pressure across the roll face for more uniform briquette densities, and lends itself better to briquetting hot materials.
The Komarek design also features external setting of roll shaft alignment, allowing easy adjustment without use of shims and time-consuming disassembly.
Rolls on the DH500 are horizontally paired and fed from above, using either gravity feed or a motor-driven screw feeder.
Both rolls are indexed so the half-briquette cavities (pockets) cut into the circumference of each roll will match up as the rolls turn, forming whole cavities as they pass through the roll centreline.
Loose material fills the cavities just prior to closure, and pressure applied as the cavities pass through centreline compresses the materials into a solid mass.
As each cavity passes beyond roll centreline, its two halves naturally move apart, allowing the formed briquette to drop out and discharge from the machine.
Model DH500 employs two 12in (30.5cm) hydraulic cylinders to apply roll separating forces of 330t, with pressure maintained by a nitrogen-filled accumulator.
The accumulator accepts hydraulic fluid displaced from the cylinders during the compaction process, absorbing and giving back energy like a spring, always matching the slope of the force-displacement curve of the moveable rolls to the requirements of the briquetting process.
This closed hydraulic system assures that the rolls will remain under virtually constant pressure when separating under briquetting load, and allows easy control of roll separating force by adjusting the hydraulic pressure.
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