Permeability Number for Various Grain Size of Tin Mine Tailing Sand for Greensand Casting Mould

Abstract:

Tin tailing sand is one of the residues from tin extraction. Tailing sand for sampling was taken from Batu Gajah, which was one of the active locations in tin mining in Malaysia. The silica content of tailing sand from Batu Gajah is between 95.9 to 98.9%. This research is to determine the effect of grain size by the increasing of water content on the permeability number. Grain size is a major determinant of mould and core permeability and surface finish of the casting. In this research involved the process of conducting the mechanical sieve grading to identify the grain size for this research. Sample was graded into 425 μm, 297 μm and 149 μm. Experiments were conducted according to American Foundrymen Society (AFS) standard of procedures. Cylindrical test pieces dimensioning of Ø50 mm×50 mm in height from various grain sand sizewater ratios bonded with 5wt% clay, were compacted by applying three ramming blows of 6666 g each using Ridsdale-Dietert metric standard rammer. The test pieces were tested for permeability number with Ridsdale-Dietert permeability meter. Grain sand size of 297 μm was discovered has appropriate permeability number with the water content of 4% which is within the requirement as moulding sand.

• Periodical: Applied Mechanics and Materials (Volumes 465-466)
• Pages: 1093-1097
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.465-466.1093
• Online since: December 2013
• Authors: Azhar Abdullah, R. Abdullah, S.K.E. Shariff, N. Haliza
• Keywords: Clay Content, Grain Size, Permeability Number, Tailing Sand, Water Content

References

[1] Mackay and Schnellmann, Mineral processing consultancy silica sand, Mines Research Institute, Kuala Lumpur (2000).

[2] A. Azimah, The silica-based industry in Malaysia. Paper presented at the Sesi Dialog Mineral (2002).

[3] A.S.B. H Hashim and Z.A.B. Sulaiman, Research on resources of ex-tin tailing sand in Perak State, Mineral and Geoscience Department Malaysia, Kuala Lumpur (1999).

[4] A. Abdullah, S. Sulaiman, B.T.H.T. Baharudin, M.K.A. Ariffin and Haliza, Mechanical properties of tin tailing sand-clay mixture from Batu Gajah, Perak, Malaysia for making greensand casting mould: Paper presented at the 15th International Conference on Advances in Materials and Processing Technologies (AMPT 2012), Wollongong, (2012).

DOI: 10.4028/www.scientific.net/msf.773-774.211

[5] J.R. Brown, Sands and Greensand, Foseco Ferrous Foundryman's Handbook, Butterworth-Heinemann, Oxford, (2003).

[6] Information on http: /www. hnsa. org/doc/foundry/index. htm.

[7] J.D. Beatle, Castings, The Macmillan Press Ltd., Hampshire, (1971).

[8] AFS, American Foundrymen's Society, Foundry Sand Handbook, Chicago, (1963).

[9] R. Siddique, G. D Schutter and A. Noumowe, Effect of used-foundry sand on the mechanical properties of concrete: submitted to Journal of Construction and Building Material (2009).

DOI: 10.1016/j.conbuildmat.2008.05.005

[10] P.D. Webster, Fundamentals of Foundry Technology, Portcullis Press Ltd., Surrey, (1980).

[11] W.H. Salmon and E.N. Simons, Foundry Practice, Sir Isaac Pitman and Sons Ltd., London, (1966).

[12] E.O. Eze, A. Alli and E.O. Thompson, Foundry qualities and applications of local synthetic sand mixtures: submitted to Journal of Applied Clay Science (1993).

DOI: 10.1016/0169-1317(93)90018-v

[13] R. Bolger, Foundry Minerals: Recycling the new name of the game, Industrial Mineral. (1996) 29-39.

[14] A. Abdullah, S. Sulaiman, B.T.H.T. Baharudin, M.K.A. Ariffin, T.R. Vijayaram and M. Sayuti, Testing for green compression strength and permeability properties on the tailing sand samples gathered from ex tin mines in Perak State, Malaysia: submitted to Advanced Materials Research (2012).

DOI: 10.4028/scientific5/amr.445.859

[15] Information on http: /www. basrid. com. uk/ste. htm.