Extrudate Characteristics Produced from High Density Screw-Type Extruder Machine

Etrudate characteristics of briquettes produced and effects of extrusion factors using an existing screw extruder have been investigated. The feedstock material used in the test is sawdust collected from sawmills around Ibadan metropolis. Particle distribution analysis of materials collected showed...

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Bibliographic Details
Published in:International letters of chemistry, physics and astronomy physics and astronomy, 2015-01, Vol.54, p.88-88
Main Authors: Bello, R S, Onilude, M A, Adegbulugbe, T A
Format: Article
Language:English
Subjects:
Astronomy
Briquettes
Densification
Dwell time
Extruders
Extrusion
Physical properties
Sawmills
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Summary:Etrudate characteristics of briquettes produced and effects of extrusion factors using an existing screw extruder have been investigated. The feedstock material used in the test is sawdust collected from sawmills around Ibadan metropolis. Particle distribution analysis of materials collected showed that the size varies between 6 mm-8 mm with 10%-20% powdery component (< 4 mesh) which is known to give better products. Samples of briquettes produced were used for physical characterization. Physical characteristic studies on samples indicate briquette length (>300mm), dimensionally stable with no significant change in dimension during and after production. Performance tests carried out on machine revealed three critical factors that significantly affect extrusion process: 1. Pre-densification within the extruder barrel results in high pressure requirement to push material through the die ring. 2. Due to high pressure requirements as a result of early densification, there is a loss of power along power transmission line. 3. Short material dwell time within the die results in weak products.
ISSN:2299-3843
2299-3843
DOI:10.18052/www.scipress.com/ILCPA.54.88