Product category:
Powder and Solids Handling
News Release from: KR Komarek | Subject: B-220B
Edited by the Processingtalk Editorial
Team on 04 April 2003
Mid-sized briquetter is improved
The B-220 Series pilot plant and small production volume briquetter from KR Komarek has been redesigned to simplify maintenance, facilitate roll changes and strengthen the drive train
With these improvements, Model B-220B is especially useful for on-site testing and multi-product applications in a wide range of industries Rated at 35 tons of roll separating force, the B-220B offers a throughput range of 250 to 1,000 lbs/hr, depending on material, briquet size and density, and occupies just 6.5 x 4 feet of floor space
This article was originally published on Processingtalk on 24 Feb 2003 at 8.00am (UK)
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Briquetting is done by two rotating rolls with half-briquet cavities (pockets) cut into the circumference of each.
These rolls, 12 inches in diameter and 3 inches wide, are indexed so the cavities on opposing rolls match up as the rolls turn, forming whole cavities as both halves pass through the roll centre-line.
Pressure applied to in-fed powder, granular or shredded material as the roll cavities close compresses that material into a solid briquet.
Further reading
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A new bench-scale laboratory model roller press, the B-050, has been developed by KR Komarek, designed specifically for research and small laboratory projects
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In the B-220B, briquet-forming rolls are cantilevered and vertically opposed.
Cantilevered roll assembly, in which the rolls are mounted outside of rather than between their two shaft-bearing blocks, allows the rolls to protrude from one end of the press.
This permits faster roll changes by eliminating the need to remove and replace the bearings.
Vertical pairing enables the rolls to be force-fed by a horizontal screw (augur) feeder, which pre-compacts the material and controls its flow to the rolls for optimal briquet consistency.
One roll/bearing assembly is mounted in a fixed position, the other is moveable.
The force holding these roll assemblies together is provided by hydraulic cylinders pressing against the bearing block that supports the moveable roll.
By adjusting the pressure in these hydraulic cylinders, the force between the rolls is easily adjusted.
The rolls are driven by a single electric motor through a dual-output speed reducer.
The screw-feeder is powered independently by a separate electric motor.
Both motors have variable-speed controls for greater precision in matching in-feed volume to briquet production rate.
An electric hydraulic pump adjusts the roll separating force as needed, and a pressure gauge allows users to observe and document the amount of force exerted.
Each B-220B includes one standard set of heat-treated stainless steel rolls, with additional sets of rolls available in a range of alloys, depending on the application.
The B-220B produces briquets up to a maximum dimension of 2.5 x 1.5 x 1 inches, and KR Komarek can custom-design an infinite variety of rolls to provide smaller briquets, sticks or sheet compacting, per customer specifications.
The 8,000 lbs B-220B is mounted on a welded steel base and is priced around USD 85,000, including one set of rolls.
Instrumentation can include an output receptacle weight-monitored by strain gauge to measure production rate.
An optional version for lab use can be more fully instrumented with sensors to measure critical functions such as hydraulic pressure, roll torque, feeder torque and roll displacement.
Such instrumentation allows easier experimentation and immediate evaluation of machine variables affecting compacted material.
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