Paper Titles in Periodical
International Letters of Chemistry, Physics and Astronomy
Volume 54

Subscribe

Subscribe to our Newsletter and get informed about new publication regulary and special discounts for subscribers!

ILCPA > Volume 54 > Extrudate Characteristics Produced from High...
< Back to Volume

Extrudate Characteristics Produced from High Density Screw-Type Extruder Machine

Full Text PDF

Abstract:

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 6-8 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 (3) 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. Notable conditions of briquette during extrusion include; 1) extrudate surface cracks, 2) shooting (sudden explosion within the extruder barrel) leading to forceful ejection of materials from the machine and 3) extrudate bowing (warping) attributable to 1) non uniform extrudate thickness, 2) surface quality of the inner race of die ring, 3) loose inter-particle networking and binding properties of material– a condition not favourable to briquette formation, 4) localized heating within the extruder as a result of moisture differentials.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 54)
Pages:
88-97
Citation:
R.S. Bello et al., "Extrudate Characteristics Produced from High Density Screw-Type Extruder Machine", International Letters of Chemistry, Physics and Astronomy, Vol. 54, pp. 88-97, 2015
Online since:
July 2015
Export:
Distribution:
References:

Elinwa and Abdulkadir, 2011 Characterizing Sawdust-ash for Use as an Inhibitor for Reinforcement Corrosion - http: /citeseerx. ist. psu. edu/showciting?cid=19587041.

Adegoke C. O. and Kuti O. A., 2004. Investigation of composite sawdust briquette as a source of fuel for domestic cooking. Intl J. Engr. Tech., 4: 144-150.

Razak M. A. & W. K. Hoi and A. V. Bridgewater and E. L. Smith, 1997. Biomass utilization systems in Malaysia. A study in Proceedings of the International Conference on biomass for Energy, Industry and environment. Elsevier Science pub. Ltd. England.

Adegoke, C. O. Energy as veritable tool for sustainable environment. Inaugural lecture series 31 of the Federal University of Technology, Akure, Nigeria, (2002).

Ojolo, S.J., J.I. Orisaleye, S.O. Ismail and S.M. Abolarin,. Technical potential of biomass energy in Nigeria. Ife J. Technol., 21(2012) 60-65.

Adapa P., Tabil L., Schoenau G. Compression Characteristics of Selected Ground Agricultural Biomass,. Agricultural Engineering International: the CIGR Ejournal. Manuscript 1347. Vol. XI. June, (2009).

Akowuah J. O, Francis Kemausuor and Stephen J Mitchual. International Journal of Energy and Environmental Engineering (2012) 3: 20 doi: 10. 1186/2251-6832-3-20.

Belonio A. T.,. Rice husk gas stove handbook. Appropriate Technology Center, Dept of Agric Engr & Environmental Management, College of Agriculture Central Phillipines University Iloilo City, Philippines, (2005).

Ludwig, C., How and why solids agglomerate, Chemical Engineering, (1994) 156-160.

Borowski Gabriel. Possibilities of Utilization of Energy Briquettes. Lublin University of Technology 20-618 Lublin, Nadbystrzycka 38, POLAND. Date modified 28th May, (2010).

Emerhi, E. A. Physical and combustion properties of briquettes produced from sawdust of three hardwood species and different organic binders. Advances in Applied Science Research, (2011).

Mukunda H. S., S. Dasappa, P. J. Paul, N. K. S. Rajan, Mahesh Yagnaraman, D. Ravi Kumar & Mukund DeogaonkarGasifier stoves - Science, technology and field outreach. Current Science (2010). Vol. 98, No. 5, 10 March (2010).

Show More Hide