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Air-assisted gravity conveying

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Bulk Solids Handling

Abstract

The three preceding chapters have been concerned primarily with pneumatic conveying by pipeline, and consideration will now be given to a variation on this technique in which the particulate bulk solid is made to flow along a channel inclined at a shallow angle. Pneumatic conveying has several advantages over other methods of transporting bulk solids, but it suffers from two drawbacks. Firstly, the power consumption is quite high; and secondly, especially when conveying in dilute phase, the solids velocity is relatively high and may cause problems as a result of particle degradation and erosive wear of the pipeline and system components. Both of these difficulties may be minimized by conveying in dense phase, that is, with a higher ratio of solids to air, so that the quantity of air used is smaller and the conveying velocity is lower.

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References and bibliography

References

  1. Dodge, J. Verfahren zum Fortschaffen von Materialien in Förderrinnen mittels Luftdruck (Procedure for transportation of materials in conveying channels using pressurised air.) DRP88402, 1895 (German patent).

    Google Scholar 

  2. Leitzel, R.E. and Morrisey, W.M. Air-float conveyors. Bulk Materials Handling, Vol. 1, ed. M.C. Hawk, Univ. Pittsburgh, Sch. Mechn. Eng., 1971, 307–325.

    Google Scholar 

  3. Bushell, E. and Maskell, R.C. Fluidised handling of alumina powder. Mech. Handling 47(3) (March 1960) 126–131.

    Google Scholar 

  4. Butler, P. No-moving parts conveyor shifts dry powdered solids. Process Engg. August 1974, 65.

    Google Scholar 

  5. Woodcock, C.R. and Mason, J.S. Aspects of the design of air-assisted gravity conveyors for the transport of bulk particulate solids. Proc. 71st Annual AIChE Conf., Florida, November 1978.

    Google Scholar 

  6. Avery, W. Meet the Airslide. Pit and Quarry 41(2) (1949) 62–67.

    Google Scholar 

  7. Nordberg, B. Air-activated gravity conveyors. Rock Products, 52, August 1949, 115–124.

    Google Scholar 

  8. Anon. Hot dust is conveyed pneumatically from precipitators to furnaces. Eng. and Mining, J., July 1954, 91.

    Google Scholar 

  9. Alston, G.L. Advances in rockdusting procedures. Mechanisation, January 1961, 46–48.

    Google Scholar 

  10. EEUA Handbook No. 15, Pneumatic Handling of Powdered Materials, Constable and Co., London, 1963.

    Google Scholar 

  11. Hudson, W.G. Why use pneumatic conveyors. Chem. Engg., April 1954, 191–194.

    Google Scholar 

  12. Stegmaier, W. Pneumatic chute for the horizontal transport of powdered bulks. Bulk Solids Technology 2(1) (Spring 1978) 47–55.

    CAS  Google Scholar 

  13. Shinohara, K. and Tanaka, T. A new device for pneumatic transport of particles. J. Chem. Engg. of Japan 5(3) (1972) 279–285.

    Article  CAS  Google Scholar 

  14. Isler, W. An air-slide type conveyor for horizontal and upward inclined transport. Zement-Kalk-Gips 10 (1960) 482–486 (In German).

    Google Scholar 

  15. Singh, B., Callcott, R.G. and Rigby, G.R. Flow of fluidized solids and other fluids in open channels. Powder Technol. 20 (1978) 99–113.

    Article  CAS  Google Scholar 

  16. Woodcock, C.R. and Mason, J.S. Air-float conveying of particulate bulk solids. Proc. Int. Symp. on Fine Particles Processing, Las Vegas, February 1980.

    Google Scholar 

Recommended further reading

  • Kraus, M.N. Pneumatic Conveying of Bulk Materials. The Ronald Press Company, 1968, 241–254.

    Google Scholar 

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© 1987 Chapman & Hall

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Woodcock, C.R., Mason, J.S. (1987). Air-assisted gravity conveying. In: Bulk Solids Handling. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2635-6_15

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  • DOI: https://doi.org/10.1007/978-94-009-2635-6_15

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-7689-0

  • Online ISBN: 978-94-009-2635-6

  • eBook Packages: Springer Book Archive

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