Rehabilitation of Mini-furnace in the Foundry Workshop
Keywords:
Burner, Blower, Throttle Valve, Refractory Bricks, Crucible PotAbstract
The rehabilitation of mini-furnace in the foundry workshop is undertaking. The mini-furnace assembly among other things has five main components which include; the furnace shell, the refractory lining [wall of the furnace]. The burner and its pipe, full tank scraps. Full tank and crucible pot. The furnace body is enclosed in cylindrical metal sheet measuring 575mm diameter by 500mm high it is lined internally with superior refractory bricks of 65mm thickness. The furnace by calculation has these specifications; circumstance of 942.86mm volume of 0.04m^3, weight of 49.05KN. The melting process is done in a crucial rammed externally with fire-clay and made from heat resistance sheet at temperature of 700^0 C to 800^0 C. An air-blast from electrically powered centrifugal blower is atomized with condemned diesel oil which flows down by gravity and is controlled by throttle valve in the fuel line and form the heat source when they mixed inside the combustion chamber.
References
Adeleke A,F. (2003) Investigation into charcoal production techniques (unpublished) B.Eng project Report, Department of Mechanical Engineering, ABU Zaria.
Agontu J,A. (2009) Design and development of low pressure charcoal fired steam Generating unit for sterilizing surgical tools in hospitals, unpublished, M.Sc Thesis Department of Mechanical Engineering, ABU Zaria
Allen.D.K(1979):Working group report 1995, second part of institute working Group TIO-NF Melting and molten metal treatment of non-ferrous materials.
Amstead, B.H., Oswald P.F. and Begeman M.L. (1979). Manufacturing Processes (7th Ed). John Wiley and Sons Inc, New York.
Barman, E.O and Alhambra C. the design of vertical pressure vessels subjected to applied forces.
Beeley, P. (2001) Foundry Technology (2nd Edition). Oxford, U.K: Butterworth- Heinemann.
Bickell, M.B and Rruiz C. (1967) pressure vessel design and analysis. Macmillian
And company Ltd., Little Essex Street London. Pp256-258.
Billy, C.L(1978). Comfort Heating. Reston Publishing Company Inc. Reston, Virginia.
Billy, C.L.(1978) Fuel wood survey, Food and Agriculture Organization of the United Nations, Rome.
Chaeles, H.(2000) Crucible Melting furnace,(Brief Article) on modern Casting, June , 2000.
Chapman, W.A.J (1972) Workshop Technology, printed in Great Britain by Butler and Tanner Ltd,
Cherkassky, V.M(1977). Pumps, fans and compressors, MIR Publishers, Moscow. Pp 43-44, 174-198.
Church, A.H:(1984) Centrifugal pumps and blowers 1st edition Oxford University Press .
Crucible Furnace; Wikipedia.org accessed on 17/5/2011.
Crucible furnace; www.britanica.com accessed on 25/6/2011.
Duggant, V.(1994) Power transmission in design work, 1st edition Blakkie Glagow London.
Eugene, A.A and Theodore B.(Eds) (1999). Marks Standard Hand Book for Mechanical Engineers. (vol. 4,5 &9) Mc Graw Hill publishers
Food and Agriculture Organization, (1999) Industrial Charcoal Making Technologies, FAO Corporate Document Repository, Rome.
Folayan, J.D. (2001) Design of a coal fired crucible type furnace, undergraduate project, Department of Mechanical Engineering, ABU Zaria.
Folayan, C.O. (2006) Thermal insulation (unpublished) Lecture notes, department of Mechanical Engineering, Ahmadu Bello University Zaria.
Fuwafe, J.A. and Akindele S.O (1996). Biomass Yield and Energy Value of some fast Growing Multipurpose trees in Nigeria.biomass and Bioenergy vol12, Issue 2, 1997, pp 101-106.
Harvey, E.F; (1982) Pressure Components Construction (Design and materials application) Van Nostrand Reinhold company New York pp 30-83.
Hearn, E.J, (1982) Mechanics of Materials. Pergamon Press Ltd. Headington Hill Hall. Oxford England pp177-193.
Hillier, V.A.M and peter Coombes (2004). Hillers’ Fundamentals of Motor Vehicle Technology vol.1 (5th Ed). Nelson Thornes Ltd, Delta Place, Cheltaham, United Kingdom. Pp476-490.
Incropera F.P. and Dewitt D.P (1990). Fundamentals of heat and mass transfer, John Wiley and Sons, Inc, New York.
John, K.A. (1977), introduction to engineering materials, English language book society and acmillan London.
Komolafe, A.J.(1992), Design and construction of a gas fired crucible type furnace,Undergraduate Project, Department of Mechanical Engineering, ABU Zaria.